DMC:V2500-A0-72-60-1000-00A-710A-B|Issue No:008|Issue Date:2021-05-01

Export Control

EAR Export Classification: Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3), except for the following Service Bulletins which are currently published as EAR Export Classification 9E991: SBE70-0992, SBE72-0483, SBE72-0580, SBE72-0588, SBE72-0640, SBE73-0209, SBE80-0024 and SBE80-0025.

Copyright

© IAE International Aero Engines AG (2001, 2014 - 2021) The information contained in this document is the property of © IAE International Aero Engines AG and may not be copied or used for any purpose other than that for which it is supplied without the express written authority of © IAE International Aero Engines AG. (This does not preclude use by engine and aircraft operators for normal instructional, maintenance or overhaul purposes.).

Applicability

All

Common Information

TASK 72-60-10-440-001 Main Gearbox Assembly - Assemble The Main Gearbox Assembly, Assembly-001

General

Fig/item numbers in parentheses in the procedure agree with those used in the IPC. Only the primary Fig/item numbers are used. For the service bulletin alpha variants refer to the IPC.

For all parts identified in a different Chapter/Section/Subject, the applicable Chapter/Section/Subject comes before the Fig/item number.

For standard torque data and procedures, refer to SPM TASK 70-41-00-400-501 and SPM TASK 70-41-01-400-501.

Special torque data and assembly tolerances are included in the procedure.

Lubricate all threads and abutment faces of nuts and bolts with CoMat 10-077 APPROVED ENGINE OILS, unless other lubricants are referred to in the procedure.

To identify, lubricate and install seal rings, refer to SPM TASK 70-64-02-640-501.

After assembly apply CoMat 07-038 AIR DRYING ENAMEL to any damaged surface protection, joint flanges and attach parts. Use the correct color of the air drying enamel. Refer to SPM TASK 70-63-02-380-501.

The number for each radial location must be identified in a clockwise direction. These start at the engine top position when you look from the rear of the engine, unless stated differently in the procedure.

Transportation covers/blanks must be removed immediately before installation of the components.

Make sure that the outer race has the same serial number of the related bearing.

Lubricate the cages of the roller bearings with CoMat 10-077 APPROVED ENGINE OILS before the installation.

Refer to TASK 72-60-00-030-001 to install the main gearbox on the build stand if necessary.

Operate by hand the installed gearshafts to make easier subsequent installations.

Note

NOTE

To identify the consumable materials refer to the PCI.

NOTE

Special tools are identified in the procedure by the tool primary number.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

Name	Manufacturer	Part Number / Identification	Quantity
IAE 1F10003 Pusher	0AM53	IAE 1F10003	1
IAE 1F10004 Pusher	0AM53	IAE 1F10004	1
IAE 1F10031 Pusher	0AM53	IAE 1F10031	1
IAE 1F10032 Pusher	0AM53	IAE 1F10032	1
IAE1F10070 Pusher	0AM53	IAE 1F10070	1
IAE 1F10072 Pusher	0AM53	IAE 1F10072	1
IAE 1F10082 Guide Pin	0AM53	IAE 1F10082	2
IAE 1F10155 Drift	0AM53	IAE 1F10155	1
IAE 1F10156 Drift	0AM53	IAE 1F10156	1
IAE 1F10157 IAE 1F10157 Drift	0AM53	IAE 1F10157	1
IAE 1F10221 Drift	0AM53	IAE 1F10221	1
IAE 1F10222 Pin	0AM53	IAE 1F10222	1
IAE 1F10223 Drift	0AM53	IAE 1F10223	1
IAE 1F10224 Drift	0AM53	IAE 1F10224	1
IAE 1F10225 Drift	0AM53	IAE 1F10225	1
IAE 1F10227 Drift	0AM53	IAE 1F10227	1
IAE 2F10229 Rotating handwheel	0AM53	IAE 2F10229	1
IAE 2F10257 Storage box	0AM53	IAE 2F10257	1
IAE 2F10266 Backlash kit	0AM53	IAE 2F10266	1
IAE 2F10267 Clamping fixture	0AM53	IAE 2F10267	1
IAE 2F10268 Backlash gage tip	0AM53	IAE 2F10268	1
IAE 2F10269 Comparator support	0AM53	IAE 2F10269	1
IAE 2F10270 Clamping fixture	0AM53	IAE 2F10270	1
IAE 2F10271 Clamping fixture	0AM53	IAE 2F10271	1
IAE 2F10272 Backlash gage tip	0AM53	IAE 2F10272	1
IAE 2F10273 Comparator support	0AM53	IAE 2F10273	1
IAE 2F10274 Clamping fixture	0AM53	IAE 2F10274	1
IAE 2F10275 Backlash gage tip	0AM53	IAE 2F10275	1
IAE 2F10276 Clamping fixture	0AM53	IAE 2F10276	1

Consumables, Materials and Expendables

Name	Manufacturer	Part Number / Identification	Quantity	Remark
CoMat 07-038 AIR DRYING ENAMEL	00BB6	CoMat 07-038
CoMat 10-077 APPROVED ENGINE OILS	X333X	CoMat 10-077

Spares

Name	Manufacturer	Part Number / Identification	Quantity	Remark
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			2
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			2
Packing			2
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			1
Packing			2

Safety Requirements

NONE

Procedure

SUBTASK 72-60-10-220-051 Make sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4002

Refer to Figure.

Calculate the interference at Location 4002. Use the data made as a note in TASK 72-60-21-200-002.

Table 1. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4002
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The Roller Bearing Deoiler Gear, Impeller, And Housing Assembly (72-60-29, 01-490) Of The Deoiler Gear Drive
Gearbox Casing Location Bore For The Roller Bearing	2.7560	Clear
	2.7553	0.0005
Roller Bearing Outer Diameter	2.7559	Intf
	2.7555	0.0006

Table 2. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4002
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The Roller Bearing Deoiler Gear, Impeller, And Housing Assembly (72-60-29, 01-490) Of The Deoiler Gear Drive
Gearbox Casing Location Bore For The Roller Bearing	70, 004	Clear
	69.985	0.013
Roller Bearing Outer Diameter	70.000	Intf
	69.991	0.015

SUBTASK 72-60-10-220-052 Make Sure the Fits and Clearances of the Deoiler Gearshaft are in the Limits given at Location 4004

Refer to Figure.

Calculate the interference at Location 4004. Use the data made as a note in TASK 72-60-29-200-003 and TASK 72-60-29-200-001.

Table 3. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4004
Deoiler Gearshaft Deoiler Gear, Impeller, And Housing Assembly (72-60-29, 01-290)
Journal Of The Rotating Ring Deoiler Gear, Impeller, And Housing Assembly (72-60-29, 01-110)
Deoiler Gearshaft Journal Of The Rotating Ring	1.2991
	1.9281	0.0010
Rotating Ring Inner Diameter	1.9311	0.0030
	1.9303

Table 4. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4004
Deoiler Gearshaft Deoiler Gear, Impeller, And Housing Assembly (72-60-29, 01-290)
Journal Of The Rotating Ring Deoiler Gear, Impeller, And Housing Assembly (72-60-29, 01-110)
Deoiler Gearshaft Journal Of The Rotating Ring	49.000
	48.975	0.030
Rotating Ring Inner Diameter	49.050	0.075
	49.030

SUBTASK 72-60-10-220-053 Make Sure the Fits and Clearances of the Deoiler Housing are in the Limits given at Location 4006

Refer to Figure.

Calculate the interference at Location 4006. Use the data made as a note in TASK 72-60-29-200-002.

Table 5. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4006
Deoiler Housing Deoiler Gear, Impeller, And Housing Assembly (72-60-29, 01-390)
Location For The Deoiler Casing ENGINE-DEOILER CASE AND COVER (72-60-31, 01-170)
Deoiler Housing Location For The Deoiler Casing	7.2834
	7.2816	0.0008
Deoiler Casing Bore	7.2862	0.0046
	7.2842

Table 6. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4006
Deoiler Housing Deoiler Gear, Impeller, And Housing Assembly (72-60-29, 01-390)
Location For The Deoiler Casing ENGINE-DEOILER CASE AND COVER (72-60-31, 01-170)
Deoiler Housing Location For The Deoiler Casing	185.000
	184.954	0.020
Deoiler Casing Bore	185.070	0.116
	185.020

SUBTASK 72-60-10-220-054 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4007

Refer to Figure.

Calculate the interference at Location 4007. Use the data made as a note in TASK 72-60-21-200-002.

Table 7. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4007
Gearbox casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The Deoiler Housing Deoiler Gear, Impeller, And Housing Assembly (72-60-29, 01-390)
Gearbox Casing Location Bore For The Deoiler Housing	6.9307
	6.9291	0.0032
Deoiler Housing Outer Diameter	6.9291	0.0000
	6.9275

Table 8. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4007
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The Deoiler Housing Deoiler Gear, Impeller, And Housing Assembly (72-60-29, 01-390)
Gearbox Casing Location bore For The Deoiler Housing	176.040
	176.000	0.080
Deoiler Housing Outer Diameter	176.000	0.000
	175.960

SUBTASK 72-60-10-220-055 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4010

Refer to Figure.

Calculate the interference at Location 4010. Use the data made as a note in TASK 72-60-21-200-002.

Table 9. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4010
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The Roller Bearing Generator Drive Gear And Housing Assembly (72-60-28, 01-590) Of The IDG Gear Drive Gearbox Casing
Location Bore For The Roller Bearing	2.7560	Clear
	2.7553	0.0005
Roller Bearing Outer Diameter	2.7559	Intf
	2.7555	0.0006

Table 10. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4010
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The Roller Bearing Generator Drive Gear And Housing Assembly (72-60-28, 01-590) Of The IDG Gear Drive
Gearbox Casing Location Bore For The Roller Bearing	70.004	Clear
	69.985	0.013
Roller Bearing Outer Diameter	70.000	Intf
	69.991	0.015

SUBTASK 72-60-10-220-056 Make Sure the Fits and Clearances of the IDG Gear Drive are in the Limits given at Location 4012

Refer to Figure.

Calculate the interference at Location 4012. Use the data made as a note in TASK 72-60-28-200-003 and TASK 72-60-28-200-001.

Table 11. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4012
IDG Gear Drive Generator Drive Gear And Housing Assembly (72-60-28, 01-410)
Journal Of The Rotating Ring Generator Drive Gear And Housing Assembly (72-60-28, 01-350)
	2.0866
IDG Gear Drive Journal Of The Rotating Ring	2.0854	0.0012
Rotating Ring Inner Diameter	2.0885	0.0031
	2.0878

Table 12. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4012
IDG Gear Drive Generator Drive Gear And Housing Assembly (72-60-28, 01-410)
Journal Of The Rotating Ring Generator Drive Gear And Housing Assembly (72-60-28, 01-350)
IDG Gear Drive Journal Of The Rotating Ring	53.000
	52.970	0.030
Rotating Ring Inner Diameter	53.050	0.080
	53.030

SUBTASK 72-60-10-220-057 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4014

Refer to Figure.

Calculate the interference at Location 4014. Use the data made as a note in TASK 72-60-21-200-002 and TASK 72-60-28-200-002.

Table 13. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4014
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Smaller Location For The IDG Housing Generator Drive Gear And Housing Assembly (72-60-28, 01-450)
Gearbox Casing Location Bore For The Housing	7.0094
	7.0078	0.0035
Housing Outer Diameter	7.0074	0.0004
	7.0059

Table 14. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4014
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Smaller Location For The IDG Housing Generator Drive Gear And Housing Assembly (72-60-28, 01-450)
Gearbox Casing Location Bore For The Housing	178.040
	178.000	0.090
Housing Outer Diameter	177.990	0.010
	177.950

SUBTASK 72-60-10-220-058 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4015

Refer to Figure.

Calculate the interference at Location 4015. Use the data made as a note in TASK 72-60-21-200-002 and TASK 72-60-28-200-002.

Table 15. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4015
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Larger Location For The IDG Housing Generator Drive Gear And Housing Assembly (72-60-28, 01-450)
Gearbox Casing Location Bore For The Housing	7.0925
	7.0886	0.0098
Housing Outer Diameter	7.0866	0.0020
	7.0827

Table 16. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4015
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Larger Location For The IDG Housing Generator Drive Gear And Housing Assembly (72-60-28, 01-450)
Gearbox Casing Location Bore For The Housing	180.150
	180.050	0.250
Housing Outer Diameter	180.000	0.050
	179.900

SUBTASK 72-60-10-220-059 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4018

Refer to Figure.

Calculate the interference at Location 4018. Use the data made as a note in TASK 72-60-21-200-002.

Table 17. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4018
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The Roller Bearing Starter Drive Gear And Housing Assembly (72-60-22, 01-500) Of The Starter Gear Drive
Gearbox Casing Location Bore For The Roller Bearing	2.9529	Clear
	2.9521	0.0005
Roller Bearing Outer Diameter	2.9527	Intf
	2.9524	0.0006

Table 18. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4018
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The Roller Bearing Starter Drive Gear And Housing Assembly (72-60-22, 01-500) Of The Starter Gear Drive
Gearbox Casing Location Bore For The Roller Bearing	75.004	Clear
	74.985	0.013
Roller Bearing Outer Diameter	75.000	Intf
	74.991	0.015

SUBTASK 72-60-10-220-060 Make Sure the Fits and Clearance of the Starter Gear Drive are in the Limits given at Location 4020

Refer to Figure.

Calculate the interference at Location 4020. Use the data made as a note in TASK 72-60-22-200-003 and TASK 72-60-22-200-001.

Table 19. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4020
Starter Gear Drive Starter Drive Gear And Housing Assembly (72-60-22, 01-260)
Journal Of The Rotating Ring Starter Drive Gear And Housing Assembly (72-60-22, 01-200)
Starter Gear Drive Journal Of The Rotating Ring	1.6535
	1.6525	0.0012
Rotating Ring Inner Diameter	1.6555	0.0030
	1.6547

Table 20. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4020
Starter Gear Drive Starter Drive Gear And Housing Assembly (72-60-22, 01-260)
Journal Of The Rotating Ring Starter Drive Gear And Housing Assembly (72-60-22, 01-200)
Starter Gear Drive Journal Of The Rotating Ring	42.000
	41.975	0.030
Rotating Ring Inner Diameter	42.050	0.075
	42.030

SUBTASK 72-60-10-220-061 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given in Location 4022

Refer to Figure.

Calculate the interference at Location 4022. Use the data made as a note in TASK 72-60-21-200-002 and TASK 72-60-22-200-002.

Table 21. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4022
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The Starter Drive Housing Starter Drive Gear And Housing Assembly (72-60-22, 01-300)
Gearbox Casing Location Bore For The Housing	7.4033
	7.4015	0.0036
Housing Outer Diameter	7.4015	0.0000
	7.3997

Table 22. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4022
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The Starter Drive Housing Starter Drive Gear And Housing Assembly (72-60-22, 01-300)
Gearbox Casing Location Bore For The Housing	188.046
	188.000	0.092
Housing Outer Diameter	188.000	0.000
	187.954

SUBTASK 72-60-10-220-062 Make Sure the Fits and Clearance of the Angle Gearbox Support are in the Limits given at Location 4023

Refer to Figure.

Calculate the interference at Location 4023. Use the data made as a note in TASK 72-60-32-200-001.

Table 23. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4023
Angle Gearbox Support ENGINE-ANGLE GEARBOX SUPPORT (72-60-32, 01-300)
Location For The Roller Bearing Starter Idler Gear And Bearing Assembly (72-60-27, 01-100) Of The Starter Idler Gear
Angle Gearbox Support Location Bore Of The Roller Bearing	3.0316	Clear
	3.0309	0.0005
Roller Bearing Outer Diameter	3.0315	Intf
	3.0311	0.0006

Table 24. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4023
Angle gearbox support ENGINE-ANGLE GEARBOX SUPPORT (72-60-32, 01-300)
Location For The Roller Bearing Starter Idler Gear And Bearing Assembly (72-60-27, 01-100) Of The Starter Idler Gear
Angle Gearbox Support Location Bore Of The Roller Bearing	77.004	Clear
	76.985	0.013
Roller Bearing Outer Diameter	77.000	Intf
	76.991	0.150

SUBTASK 72-60-10-220-063 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4025

Refer to Figure.

Calculate the interference at Location 4025. Use the data made as a note in TASK 72-60-21-200-002.

Table 25. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4025
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The Roller Bearing Starter Idler Gear And Bearing Assembly (72-60-27, 01-220) Of The Starter Idler Gear
Gearbox Casing Location Bore Of The Roller Bearing	3.0316	Clear
	3.0309	0.0005
Roller Bearing Outer Diameter	2.0315	Intf
	3.0311	0.0006

Table 26. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4025
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The Roller Bearing Starter Idler Gear And Bearing Assembly (72-60-27, 01-220) Of The Starter Idler Gear
Gearbox Casing Location Bore Of The Roller Bearing	77.004	Clear
	76.985	0.013
Roller Bearing Outer Diameter	77.000	Intf
	76.991	0.015

SUBTASK 72-60-10-220-064 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4027

Refer to Figure.

Calculate the interference at Location 4027. Use the data made as a note in TASK 72-60-21-200-002 and TASK 72-60-32-200-001.

Table 27. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4027
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Pilot Starter Idler Gear Of The Angle Gearbox Support ENGINE-ANGLE GEARBOX SUPPORT (72-60-32, 01-300)
Gearbox Casing Location Bore	6,8562
	6.8524	0.0117
Pilot Starter Idler Gear Outer Diameter	6.8445
	6.8465	0.0059

Table 28. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4027
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Pilot Starter Idler Gear Of The Angle Gearbox Support ENGINE-ANGLE GEARBOX SUPPORT (72-60-32, 01-300)
Gearbox Casing Location Bore	174.150
	174.050	0.300
Pilot Starter Idler Gear Outer Diameter	173.850
	173.900	0.150

SUBTASK 72-60-10-220-065 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4030

Refer to Figure.

Calculate the interference at Location 4030. Use the data made as a note in TASK 72-60-21-200-002.

Table 29. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4030
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The Roller Bearing Extension Layshaft Gear And Bearing Assembly (72-60-24, 01-280) Of The Layshaft Extension Gear
Gearbox Casing Location Bore Of The Roller Bearing	3.5434	Clear
	3.5426	0.0004
Roller Bearing Outer Diameter	3.5433	Intf
	3.5430	0.0007

Table 30. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4030
Gearbox casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The Roller Bearing Extension Layshaft Gear And Bearing Assembly (72-60-24, 01-280) Of The Layshaft Extension Gear
Gearbox Casing Location Bore Of The Roller Bearing	90.004	Clear
	89.982	0.012
Roller Bearing Outer Diameter	90.000	Intf
	89.992	0.018

SUBTASK 72-60-10-220-066 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4032

Refer to Figure.

Calculate the interference at Location 4032. Use the data made as a note in TASK 72-60-21-200-002 and TASK 72-60-32-200-001.

Table 31. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4032
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Pilot Layshaft Extension Gear Of The Angle Gearbox Support ENGINE-ANGLE GEARBOX SUPPORT (72-60-32, 01-300)
Gearbox Casing Location Bore	3.3129
	3.3091	0.0117
Pilot Layshaft Extension Gear Outer Diameter	3.3012	0.0059
	3.3032

Table 32. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4032
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Pilot Layshaft Extension Gear Of The Angle Gearbox Support ENGINE-ANGLE GEARBOX SUPPORT (72-60-32, 01-300)
Gearbox Casing Location Bore	84.150
	84.050	0.300
Pilot Layshaft Extension Gear Outer Diameter	83.850	0.150
	83.900

SUBTASK 72-60-10-220-067 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4033

Refer to Figure.

Calculate the interference at Location 4033. Use the data made as a note in TASK 72-60-21-200-002 and TASK 72-60-24-200-001.

Table 33. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4033
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The PMA Drive Housing Extension Layshaft Gear And Bearing Assembly (72-60-24, 01-180)
Gearbox Casing Location Bore Of The PMA Drive Housing	4.3320
	4.3307	0.0027
PMA Drive Housing Outer Diameter	4.3307	0.0000
	4.3293

Table 34. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4033
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The PMA Drive Housing Extension Layshaft Gear And Bearing Assembly (72-60-24, 01-180)
Gearbox Casing Location Bore Of The PMA Drive Housing	110.035
	110.000	0.070
PMA Drive Housing Outer Diameter	110.000	0.000
	109.965

SUBTASK 72-60-10-220-068 Make Sure the Fits and Clearances of the Angle Gearbox Support are in the Limits given at Location 4034

Refer to Figure.

Calculate the interference at Location 4034. Use the data made as a note in TASK 72-60-32-200-001.

Table 35. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4034
Angle Gearbox Support ENGINE-ANGLE GEARBOX SUPPORT (72-60-32, 01-300)
Location For The Roller Bearing Oil Scavenge Pump Drive Gear And Bearing Assembly (72-60-26, 01-100) Of The Oil Scavenge Pump Gear Drive
Angle Gearbox Support Location Bore Of The Roller Bearing	2.7560	Clear
	2.7553	0.0005
Roller Bearing Outer Diameter	2.7559	Intf
	2.7555	0.0006

Table 36. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4034
Angle gearbox support ENGINE-ANGLE GEARBOX SUPPORT (72-60-32, 01-300)
Location For The Roller Bearing Oil Scavenge Pump Drive Gear And Bearing Assembly (72-60-26, 01-100) Of The Oil Scavenge Pump Gear Drive
Angle Gearbox Support Location Bore Of The Roller Bearing	70.004	Clear
	69.985	0.013
Roller Bearing Outer Diameter	70.000	Intf
	69.991	0.015

SUBTASK 72-60-10-220-069 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4036

Refer to Figure.

Calculate the interference at Location 4036. Use the data made as a note in TASK 72-60-21-200-002.

Table 37. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4036
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The Roller Bearing Oil Scavenge Pump Drive Gear And Bearing Assembly (72-60-26, 01-180) Of The Oil Scavenge Pump Gear Drive
Gearbox Casing Location Of The Roller Bearing	2.9529	Clear
	2.9521	0.0008
Roller Bearing Outer Diameter	2.9527	Intf
	2.9521	0.0006

Table 38. Fits and Clearances (all dimensions are in millimeters)
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4036
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The Roller Bearing Oil Scavenge Pump Drive Gear And Bearing Assembly (72-60-26, 01-180) Of The Oil Scavenge Pump Gear Drive
Gearbox Casing Location Bore Of The Roller Bearing	75.004	Clear
	74.985	0.019
Roller Bearing Outer Diameter	75.000	Intf
	74.985	0.015

SUBTASK 72-60-10-220-070 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4038

Refer to Figure.

Calculate the interference at Location 4038. Use the data made as a note in TASK 72-60-21-200-002 and TASK 72-60-32-200-001.

Table 39. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4038
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The Pilot Of The Angle Gearbox Support ENGINE-ANGLE GEARBOX SUPPORT (72-60-32, 01-300)
Gearbox Casing Location Bore	6.8562
	6.8524	0.0117
Pilot Oil Scavenge Pump Gear Drive Outer Diameter	6.8445
	6.8465	0.0059

Table 40. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4038
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The Pilot Of The Angle Gearbox Support ENGINE-ANGLE GEARBOX SUPPORT (72-60-32, 01-300)
Gearbox Casing Location Bore	174.150
	174.050	0.300
Pilot Oil Scavenge Pump Gear Drive Outer Diameter	173.850
	173.900	0.150

SUBTASK 72-60-10-220-071 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4041

Refer to Figure.

Calculate the interference at Location 4041. Use the data made as a note in TASK 72-60-21-200-002.

Table 41. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4041
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The Roller Bearing Hydraulic Pump Drive Gear And Housing Assembly (72-60-23, 01-640) Of The Hydraulic Pump Gear Drive
Gearbox Casing Location Bore Of The Roller Bearing	2.7560	Clear
	2.7553	0.0005
Roller Bearing Outer Diameter	2.7559	Intf
	2.7555	0.0006

Table 42. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4041
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The Roller Bearing Hydraulic Pump Drive Gear And Housing Assembly (72-60-23, 01-640) Of The Hydraulic Pump Gear Drive
Gearbox Casing Location Bore Of The Roller Bearing	70.004	Clear
	69.985	0.013
Roller Bearing Outer Diameter	70.000	Intf
	69.991	0.015

SUBTASK 72-60-10-220-072 Make Sure the Fits and Clearance of the Hydraulic Pump Gear Drive are in the Limits given at Location 4043

Refer to Figure.

Calculate the interference at Location 4043. Use the data made as a note in TASK 72-60-23-200-002.

Table 43. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4043
Hydraulic Pump Gear Drive Hydraulic Pump Drive Gear And Housing Assembly (72-60-23, 01-440)
Journal Of The Rotating Ring Hydraulic Pump Drive Gear And Housing Assembly (72-60-23, 01-360)
Hydraulic Pump Gear Drive Journal Of The Rotating Ring	1.6535
	1.6525	0.0012
Rotating Ring Inner Diameter	1.6555	0.0030
	1.6547

Table 44. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4043
Hydraulic Pump Gear Drive Hydraulic Pump Drive Gear And Housing Assembly (72-60-23, 01-440)
Journal Of The Rotating Ring Hydraulic Pump Drive Gear And Housing Assembly (72-60-23, 01-360)
Hydraulic Pump Gear Drive Journal Of The Rotating Ring	42.000
	41.975	0.030
Rotating Ring Inner Diameter	42.050	0.075
	42.030

SUBTASK 72-60-10-220-073 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4045

Refer to Figure.

Calculate the interference at Location 4045. Use the data made as a note in TASK 72-60-21-200-002 and TASK 72-60-23-200-001.

Table 45. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4045
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The Hydraulic Pump Housing Hydraulic Pump Drive Gear And Housing Assembly (72-60-23, 01-460)
Gearbox Casing Location Bore Of The Housing	6.9700
	6.9685	0.0031
Housing Outer Diameter	6.9685	0.0000
	6.9669

Table 46. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4045
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The Hydraulic Pump Housing Hydraulic Pump Drive Gear And Housing Assembly (72-60-23, 01-460)
Gearbox Casing Location Bore Of The Housing	177.040
	177.000	0.080
Housing Outer Diameter	177.000	0.000
	176.960

SUBTASK 72-60-10-220-074 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4049

Refer to Figure.

Calculate the interference at Location 4049. Use the data made as a note in TASK 72-60-10-200-002.

Table 47. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4049
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The Roller Bearing Fuel Pump Drive Gear And Housing Assembly (72-60-25, 01-290) Of The Fuel Pump Gear Drive
Gearbox Casing Location Bore Of The Roller Bearing	2.9529	Clear
	2.9521	0.0007
Roller Bearing Outer Diameter	2.9527	Intf
	2.9521	0.0006

Table 48. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4049
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Location For The Roller Bearing Fuel Pump Drive Gear And Housing Assembly (72-60-25, 01-290) Of The Fuel Pump Gear Drive
Gearbox Casing Location Bore Of The Roller Bearing	75.004	Clear
	74.985	0.019
Roller Bearing Outer Diameter	75.000	Intf
	74.985	0.015

SUBTASK 72-60-10-220-075 Make Sure the Fits and Clearances of the Fuel Pump Gear Drive are in the Limits given at Location 4051

Refer to Figure.

Calculate the interference at Location 4051. Use the data made as a note in TASK 72-60-25-200-002.

Table 49. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4051
Fuel Pump Gear Drive Extension Layshaft Gear And Bearing Assembly (72-60-24, 01-200)
Journal Of The Rotating Ring Fuel Pump Drive Gear And Housing Assembly (72-60-25, 01-170)
Fuel Pump Gear Drive Journal Of The Rotating Ring	1.6535
	1.6525	0.0012
Rotating Ring Inner Diameter	1.6555	0.0030
	1.6547

Table 50. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4051
Fuel Pump Gear Drive Extension Layshaft Gear And Bearing Assembly (72-60-24, 01-200)
Journal Of The Rotating Ring Fuel Pump Drive Gear And Housing Assembly (72-60-25, 01-170)
Fuel Pump Gear Drive Journal Of The Rotating Ring	42.000
	41.975	0.030
Rotating Ring Inner Diameter	42.050	0.075
	42.030

SUBTASK 72-60-10-220-076 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4053

Refer to Figure.

Calculate the interference at Location 4053. Use the data made as a note in TASK 72-60-21-200-002 and TASK 72-60-25-200-001.

Table 51. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4053
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Smaller Location For The Fuel Pump Drive Housing Fuel Pump Drive Gear And Housing Assembly (72-60-25, 01-210)
Gearbox Casing Location Bore For The Housing	5.0409
	5.0393	0.0031
Housing Outer Diameter	5.0389	0.0004
	5.0378

Table 52. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4053
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Smaller Location For The Fuel Pump Drive Housing Fuel Pump Drive Gear And Housing Assembly (72-60-25, 01-210)
Gearbox Casing Location Bore For The Housing	128.040
	128.000	0.080
Housing Outer Diameter	127.990	0.010
	127.960

SUBTASK 72-60-10-220-077 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4054

Refer to Figure.

Calculate the interference at Location 4054. Use the data made as a note in TASK 72-60-21-200-002 and TASK 72-60-24-200-001.

Table 53. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4054
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Larger Location For The Fuel Pump Drive Housing Extension Layshaft Gear And Bearing Assembly (72-60-24, 01-210)
Gearbox Casing Location Bore For The Housing	5.1240
	5.1201	0.0098
Housing Outer Diameter	5.1181	0.0020
	5.1142

Table 54. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4054
Gearbox Casing Main Gearbox Casing And Fittings (72-60-21, 02-050)
Larger Location For The Fuel Pump Drive Housing Extension Layshaft Gear And Bearing Assembly (72-60-24, 01-210)
Gearbox Casing Location Bore For The Housing	130.150
	130.050	0.250
Housing Outer Diameter	130.000	0.050
	129.900

SUBTASK 72-60-10-220-078 Make Sure the Fits and Clearances of the Angle Gearbox Support are in the Limits given at Location 4055

Refer to Figure.

Calculate the interference at Location 4055. Use the data made as a note in TASK 72-60-32-200-001 and TASK 72-60-21-200-002.

Table 55. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4055
Angle Gearbox Support ENGINE-ANGLE GEARBOX SUPPORT (72-60-32, 01-300)
Locations For The Pins ENGINE-MAIN GEARBOX CASE AND FITTINGS (72-60-21, 01-360) (2 Off) On The Angle Gearbox Casing
Angle Gearbox Support Location Bore For The Pin	0.3141
	0.3128	0.0019
Pin Outer Diameter	0.3127	0.0001
	0.3122

Table 56. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4055
Angle Gearbox Support ENGINE-ANGLE GEARBOX SUPPORT (72-60-32, 01-300)
Locations For The Pins ENGINE-MAIN GEARBOX CASE AND FITTINGS (72-60-21, 01-360) (2 Off) On The Angle Gearbox Casing
Angle Gearbox Support Location Bore For The Pin	7.980
	7.945	0.050
Pin Outer Diameter	7.943	0.002
	7.930

SUBTASK 72-60-10-220-079 Make Sure the Fits and Clearances of the PMA Drive Housing are in the Limits given at Location 4062

Refer to Figure.

Calculate the interference at Location 4062. Use the data made as a note in TASK 72-60-24-200-001 and TASK 72-60-33-200-003.

Table 57. Fits and Clearances (all dimensions are in inches)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4062
PMA Drive Housing Extension Layshaft Gear And Bearing Assembly (72-60-24, 01-180)
Location For The PMA Support PMA Shaft, Rotor, and Housing Assembly (72-60-33, 01-420)
PMA Drive Housing Location Bore For The PMA Support	3.1890
	3.1876	0.0000
PMA Support Outer Diameter	3.1904	0.0028
	3.1890

Table 58. Fits and Clearances (all dimensions are in millimeters)
	NEW PART		WORN PART
	DIMENSIONS		DIMENSIONS
PART IDENT	Size	Clearance	Non-select	REJECT IF MORE THAN
LOCATION 4062
PMA Drive Housing Extension Layshaft Gear And Bearing Assembly (72-60-24, 01-180)
Location For The PMA Support PMA Shaft, Rotor, and Housing Assembly (72-60-33, 01-420)
PMA Drive Housing Location Bore For The PMA Support	81.000
	80.965	0.000
PMA Support Outer Diameter	81.035	0.070
	81.000

1. Refer to Figure.
2. 1. Install Main Gearbox Assembly(72-60-10, 01-211) and Main Gearbox Assembly (72-60-10, 01-214) packing 1 off each in to the grooves of the oil nozzle.
  2. Install the oil nozzle in to the seat adjacent to the mating flange of the oil pressure pump. Align the hole in the nozzle flange with the adjacent stud.
  3. Install the washer and the nut and torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
3. 1. Install Main Gearbox Assembly (72-60-10, 01-295) and Main Gearbox Assembly (72-60-10, 01-300) packing 1 off each in to the grooves of the oil nozzle.
  2. Install the oil nozzle in to the seat on the left hand of the mating flange of the hydraulic pump. Align the hole in the nozzle flange with the adjacent stud.
  3. Install the washer and the nut and torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
4. 1. Install Main Gearbox Assembly (72-60-10, 01-251) and Main Gearbox Assembly (72-60-10, 01-254) packing 1 off each in to the grooves of the oil nozzle.
  2. Install the oil nozzle in to the seat below the mating flange of the PMA housing. Align the hole in the nozzle flange with the adjacent stud.
  3. Install the washer and the nut and torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
1. Refer to Figure.
2. 1. Install Main Gearbox Assembly (72-60-10, 01-121) and Main Gearbox Assembly (72-60-10, 01-124) packing 1 off each in to the grooves of the oil nozzle.
  2. Install the oil nozzle in to the seat adjacent to the mating flange of the deoiler casing. Align the hole in the nozzle flange with the adjacent stud.
  3. Install the washer and the nut and torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
3. 1. Install Main Gearbox Assembly (72-60-10, 01-401) and Main Gearbox Assembly (72-60-10, 01-404) packing 1 off each in to the grooves of the oil nozzle.
  2. Install the oil nozzle in to the seat above the mating flange of the starter.
  3. Install the washer and the nut and torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
4. 1. Install Main Gearbox Assembly (72-60-10, 01-171) and Main Gearbox Assembly (72-60-10, 01-174) packing 1 off each in to the grooves of the oil nozzle.
  2. Install the oil nozzle in to the seat above the mating flange of the PMA shaft housing. Align the hole in the nozzle flange with the adjacent stud.
  3. Install the washer and the nut and torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
1. Refer to Figure.
2. 1. Install Main Gearbox Assembly (72-60-10, 01-321) and Main Gearbox Assembly (72-60-10, 01-324) packing 1 off each in to the grooves of the oil nozzle.
  2. Install the oil nozzle in to the seat below the mating flange of the fuel pump. Align the hole in the nozzle flange with the adjacent stud.
  3. Install the washer and the nut and torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
3. 1. Install Main Gearbox Assembly (72-60-10, 01-361) and Main Gearbox Assembly (72-60-10, 01-364) packing 1 off each in to the grooves of the oil nozzle.
  2. Install the oil nozzle in to the seat below the mating flange of the integrated drive generator system.
  3. Install the washer and the nut and torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
1. Refer to Figure.
2. Install the outer race of the front roller bearing in to the seat in the internal of the gearbox casing. Align the holes on the outer race flange with the studs on the gearbox casing. Use IAE 1F10157 IAE 1F10157 Drift drift.
3. Install the three nuts which attach the outer race to the gearbox casing. Torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
4. Install the oil scavenge pump drive gear, with the smaller gear pointed to the rear of the gearbox, in the gearbox casing. Engage the gear with the adjacent hydraulic pump drive gear.
1. Refer to Figure.
2. Install the outer race of the front roller bearing in to the seat in the internal of the gearbox casing. Align the holes on the outer race flange with the studs on the gearbox casing. Use IAE 1F10157 IAE 1F10157 Drift drift to easy the installation.
3. Install the three nuts which attach the outer race of the front roller bearing to the gearbox casing. Torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
4. 1. Install Main Gearbox Assembly (72-60-10, 01-790) packings 2 off in to the grooves on the housing.
  2. Install the fuel pump drive gear with the housing in to the gearbox casing.
  3. Align the housing holes with the studs on the gearbox casing flange.
  4. Put the front roller bearing in to the outer race in the gearbox casing.
  5. Engage the gear with the adjacent hydraulic pump drive gear.
  6. Push the housing and the drive gear in position. Use IAE 1F10223 Drift drift.
  7. Install the two bolts which attach the housing to the gearbox casing. Torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
5. Measure the axial travel of the fuel pump gear drive which must be 0.0039 in. to 0.0315 in. (0.10 mm to 0.80 mm).
1. Refer to Figure.
2. Install the outer race of the rear roller bearing in to the seat in the internal of the gearbox casing. Align the holes on the outer race flange with the studs on the gearbox casing. Use a soft hammer to make easier the installation.
3. 1. Put the shroud around the drive gear.
  2. Install the hydraulic pump drive gear and the shroud in the internal of the gearbox casing. Make sure that the ID splined end points to the front of the gearbox.
  3. Put the rear roller bearing in to the outer race.
  4. Align the holes on the shroud with the studs on the gearbox casing.
  5. Install the three nuts which attach the outer race to the gearbox casing. Torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
4. 1. Install Main Gearbox Assembly (72-60-10, 01-745) packing off in to the groove of the oil duct sleeve.
  2. Install Main Gearbox Assembly (72-60-10, 01-740) packing off in to the groove of the housing.
  3. Align the housing holes with the studs and the oil duct sleeve with the seat on the gearbox casing flange. Align the outer race with the rear roller bearing. Put the housing over the hydraulic pump gear drive and install in the pad on the gearbox casing. Use IAE 1F10225 Drift drift.
  4. Install the two bolts which attach the housing to the gearbox casing. Torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
5. Measure the axial travel of the hydraulic pump drive gear which must be 0.0039 in. to 0.0315 in. (0.10 mm to 0.80 mm).
1. Refer to Figure.
2. 1. Align the holes on the shroud Hydraulic Pump Drive Gear And Housing Assembly (72-60-23, 01-620) with the studs that attach the bearing outer race to the gearbox casing.
  2. Install the shroud Hydraulic Pump Drive Gear And Housing Assembly (72-60-23, 01-620) and the three nuts which attach the outer race to the gearbox casing. Torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
  3. Put the hydraulic pump drive gear in the gearbox casing. Make sure that the inner diameter splined end points towards the front of the gearbox.
  4. Install the rear roller bearing and the hydraulic gearshaft into the outer race installed in the gearbox casing.
  5. Remove the three nuts that secure the bearing outer race to the hydraulic pump housing.
  6. Align and install the shroud Hydraulic Pump Drive Gear And Housing Assembly (72-60-23, 01-410) on to the outer race. Install the nuts and torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
3. 1. Install Main Gearbox Assembly Main Gearbox Assembly (72-60-10, 01-745) packing into the groove of the oil duct sleeve.
  2. Install Main Gearbox Assembly Main Gearbox Assembly (72-60-10, 01-740) packing into the groove of the housing.
  3. Align the housing holes with the studs and the oil duct sleeve with the seat on the gearbox casing flange. Align the outer race with the rear roller bearing. Put the housing over the hydraulic pump gear drive and install in the pad on the gearbox casing. Use IAE 1F10225 Drift.
  4. Install the two bolts which attach the housing to the gearbox casing. Torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
4. Measure the axial travel of the hydraulic pump drive gear which must be 0.0039 in. to 0.0315 in. (0.10 mm to 0.80 mm).
1. Refer to Figure.
2. 1. Install IAE 1F10082 Guide Pin guide pin 2 off in to the boltholes near the seat of the outer race.
  2. Align the holes on the outer race flange with the guide pins. Install the outer race in to the seat in the internal of the gearbox casing. Use IAE 1F10155 Drift drift to easy the installation. Remove the three guide pins.
  3. Install the three keywashers and bolts which attach the outer race to the gearbox casing. Torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
  4. Bend the tabs of the keywashers to lock the bolts.
3. 1. Put the gearshaft, with the ID splined end pointed to the rear of the gearbox.
  2. Put the roller bearing in to the outer race installed in the gearbox casing.
  3. Engage the gear with the adjacent oil scavenge pump drive gear.
4. 1. Install Main Gearbox Assembly (72-60-10, 01-685) packing in to the groove on the housing.
  2. Align the holes on the housing flange with the studs on the gearbox casing and the outer race with the front roller bearing. Put the housing over the gearshaft and install in the seat on the gearbox casing. Use a soft hammer to make easier the installation.
  3. Install the two washers and nuts on the two shorter studs. Torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
5. Measure the axial travel of the layshaft extension gear which must be to 0.0039 in. to 0.0315 in. (0.10 mm to 0.80 mm).
6. NOTE
  Torque these nuts only after the installation of the PMA drive gear. Refer to Step.
  Release again the two nuts.
1. Refer to Fig-72-60-10-440-008 .
2. Install the outer race of the front roller bearing in to the seat in the internal of the gearbox casing. Align the holes on the outer race flange with the studs on the gearbox casing. Use IAE 1F10157 IAE 1F10157 Drift drift to easy the installation.
3. Install the three nuts which attach the outer race of the front roller bearing to the gearbox casing. Torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
4. Install the starter idler gear, with the hexagonal end pointed to the front of the gearbox, in the gearbox casing. Put the front roller bearing in to the outer race in the gearbox casing. Engage the gear with the adjacent extension layshaft gear.
1. Refer to Figure.
2. Install Main Gearbox Assembly (72-60-10, 01-845) packings off into the grooves on the external spigots of the angle gearbox support.
3. Install Main Gearbox Assembly (72-60-10, 01-850) packing off into the groove on the central spigot of the angle gearbox support.
4. Install ENGINE-ANGLE GEARBOX SUPPORT (72-60-32, 01-169) packing off and ENGINE-ANGLE GEARBOX SUPPORT (72-60-32, 01-167) packing off into the strainer suction.
5. 1. Align the holes on the flange of the angle gearbox support with the studs on the gearbox casing.
  2. Install the angle gearbox support on the gearbox casing flange. Put the outer races on the angle gearbox support over the two rear roller bearings installed on the gearbox casing. Make sure that the strainer suction is correctly aligned with the aperture on the gearbox casing.
  3. Install the bracket Main Gearbox Assembly (72-60-10, 01-831), bracket Main Gearbox Assembly (72-60-10, 01-826), and the bracket Main Gearbox Assembly (72-60-10, 01-827) on the studs.
  4. Install the 16 washers Main Gearbox Assembly (72-60-10, 01-830) and nuts Main Gearbox Assembly (72-60-10, 01-825) on the studs.
  5. Install the washer Main Gearbox Assembly (72-60-10, 01-840) and the bolts Main Gearbox Assembly (72-60-10, 01-835).
  6. Turn the 16 nuts and the bolt to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
6. 1. Install ENGINE-ANGLE GEARBOX SUPPORT (72-60-32, 01-167) packing 1 off and ENGINE-ANGLE GEARBOX SUPPORT (72-60-32, 01-169) packing 2 off into the groove of the strainer suction.
  2. Align the hole on the mounting flange of the strainer suction with the stud on the flange of the angle gearbox support. Install the strainer suction into the seat on the angle gearbox support.
  3. Install the washer and the nut which attach the strainer suction to the angle gearbox support. Torque the to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
  4. Install Transportation Fittings (72-60-03, 01-960) packing 1 off, into the groove of the transportation plug. Install, if required, the Transportation Fittings (72-60-03, 01-970) transportation plug on the strainer suction.
7. Measure the axial travel of the starter idler gear which must be to 0.0039 in. to 0.0354 in. (0.10 mm to 0.90 mm).
8. Measure the axial travel of the oil scavenge pump gear drive which must be to 0.0019 in. to 0.0334 in. (0.05 mm to 0.85 mm).
1. Refer to Figure.
2. Install the outer race of the rear roller bearing in to the seat in the internal of the gearbox casing. Align the holes on the outer race flange with the studs on the gearbox casing. Use IAE 1F10157 IAE 1F10157 Drift drift to make easier the installation.
3. Install the shroud on the outer race. Align the holes with the studs.
4. Install the three nuts which attach the outer race and the shroud to the gearbox casing. Torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
5. Install the starter drive gear, with the ID splined end pointed to the front of the gearbox, in the gearbox casing.
6. Put the roller bearing in to the outer race installed in the gearbox casing. Engage the gear with the adjacent starter idler gear.
1. Refer to Figure.
2. Install the outer race of the front roller bearing in to the seat in the internal of the gearbox casing. Align the holes on the outer race flange with the studs on the gearbox casing. Use IAE 1F10156 Drift drift to easy the installation.
3. Install the three nuts which attach the outer race to the gearbox casing. Torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
4. Install the IDG drive gear, with the ID splined end pointed to the rear of the gearbox, in the gearbox casing.
5. Put the roller bearing in to the outer race installed in the gearbox casing. Engage the gear with the adjacent starter gear drive. Move the starter gear drive to easy the installation.
1. Refer to Figure.
2. Install Main Gearbox Assembly (72-60-10, 01-585) packing off in to the groove of the housing.
3. Align the housing holes with the studs on the gearbox casing. Align the outer race with the rear roller bearing. Put the housing over the starter drive gear and install in the pad on the gearbox casing. Use IAE 1F10224 Drift drift.
4. Install the eight washers and nuts which attach the housing to the gearbox casing. Torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
5. Measure the axial travel of the starter gear drive which must be to 0.0039 in. to 0.0315 in. (0.10 mm to 0.80 mm).
1. Refer to Figure.
2. Install Main Gearbox Assembly (72-60-10, 01-540) packings 2 off in to the grooves of the housing.
3. Install IAE 1F10222 Pin guide pins in to the bolthole on the gearbox casing at the mating flange of the housing.
4. Align the housing holes with the guide pins. Align the outer race with the rear roller bearing. Put the housing over the IDG drive gear and install in the pad on the gearbox casing. Use IAE 1F10221 Drift drift.
5. Remove the guide pin.
6. Install the two bolts which attach the housing to the gearbox casing. Torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
7. Measure the axial travel of the IDG drive gear, which must be to 0.0039 in. to 0.0354 in. (0.10 mm to 0.90 mm).
1. Refer to Figure.
2. Install the outer race of the rear roller bearing in to the seat in the internal of the gearbox casing. Align the holes on the outer race flange with the studs on the gearbox casing. Use IAE 1F10156 Drift off to make easier the installation.
3. Install the three nuts which attach the outer race to the gearbox casing. Torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
4. 1. Install Main Gearbox Assembly (72-60-10, 01-500) off in to the groove on the rear flange of the deoiler housing.
  2. Put the gearshaft in to the gearbox casing with the impellor pointed to the front of the gearbox.
  3. Align the holes on the deoiler housing flange with the studs on the gearbox casing.
  4. Put the rear roller bearing in to the outer race installed in the gearbox casing and engage the gear with the adjacent IDG gear drive.
  5. Install the two screws which attach the deoiler housing to the gearbox casing. Torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
5. 1. Install Deoiler Gear, Impeller, And Housing Assembly (72-60-29, 01-090) off in to the internal groove of the mating ring.
  2. Put the mating ring on the guide bush of IAE1F10070 Pusher off, with the large contact face against the slide pusher.
  3. Install the pusher with the mating ring on the deoiler gearshaft. Align the lugs on the mating ring with the slots on the deoiler gearshaft.
  4. Push the mating ring in position with the slide pusher of the pusher.
  5. Remove the pusher.
1. Refer to Figure and SBE 79-0088.
2. Install Main Gearbox Assembly (72-60-10, 01-470) off in to the groove of the deoiler casing.
3. Install Main Gearbox Assembly (72-60-10, 01-473) off in to the groove on the filter housing.
4. Install the deoiler casing over the deoiler gear and impellor. Align the filter with the seat on the gearbox casing and the holes on deoiler casing flange with the studs.
5. Pre SBE 79-0088: Install the bracket Main Gearbox Assembly (72-60-10, 01-456), and install the five washers and the seven nuts which attach the deoiler casing to the gearbox casing. Torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
6. SBE 79-0088: Install the bracket Main Gearbox Assembly (72-60-10, 01-457), and install the four washers and the seven nuts which attach the deoiler casing to the gearbox casing. Torque to 85 to 95 lbfin (9.604 to 10.734 Nm).
1. Refer to Figure.
2. Install Main Gearbox Assembly (72-60-10, 01-645) off in to the groove on the mounting flange of the PMA support.
3. Install Main Gearbox Assembly (72-60-10, 01-650) off in to the groove on the end of the manifold.
4. CAUTION
  MAKE SURE THAT THE GEARS OF THE PMA DRIVE GEAR ASSEMBLY AND THE LAYSHAFT ARE CORRECTLY ENGAGED BEFORE THE USE OF THE DRIFT. DAMAGE TO THE PMA GEARS CAN OCCUR IF THE ENGAGEMENT IS FORCED.
  Align the PMA support with the studs and the manifold with the seat on the gearbox casing. Install the PMA support on the PMA housing. Engage the gear of the PMA shaft with the gear of extension layshaft. Use IAE 1F10227 Drift off.
5. Install the bracket on the longer studs.
6. Install the two nuts on the long studs installed on the gearbox casing and one nut on the stud installed on the PMA drive housing.
7. Torque the two nuts which attach the PMA drive housing and the three nuts which attach the PMA gear drive, to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
1. Turn the build stand support to position the front side of the gearbox case to the top.
2. Install IAE 2F10229 Rotating handwheel off on the starter idler gear and manually turn the gear train. Check that the gears are free to turn.
1. Refer to Fig-72-60-10-990-032-001.
2. 1. Put the clamping fixture on the fuel pump housing. Align the two holes in the clamping fixture and two studs in the fuel pump housing. Install the two hexagon nuts to attach the clamping fixture to housing. Tighten the two nuts.
  2. Turn the handle until the fuel pump gear drive is locked.
3. 1. Put the plate of the comparator support on the hydraulic pump housing. Align the two holes in the comparator support and two studs in the hydraulic pump housing. Install the two hexagon nuts to attach the comparator support to the housing. Tighten the nuts.
4. 1. Put the expander into the ID of the hydraulic pump drive gear. Turn the handle until the backlash gage is locked on the drive gear. Lock the handle.
  2. Turn clockwise the handle of the backlash gage by hand and set to zero the dial gage.
  3. Make sure that the tip gage touches the setting block on the clamp and the dial gage shows a value of zero.
  4. The tools are now set to measure the backlash.
1. Refer to Figure.
2. NOTE
  Make sure all tool faces that touch are clean and not damaged.
  Turn counterclockwise the handle of the backlash gage by hand and read the value of backlash on the dial gage.
  The value must be:
  0.0127 in. (0.32 mm) minimum.
  0.0197 in. (0.50 mm) maximum.
3. Remove IAE 2F10267 Clamping fixture clamping fixture 1 off.
4. Keep IAE 2F10269 Comparator support comparator support 1 off and IAE 2F10268 Backlash gage tip backlash gage on place for the next measure.
1. Refer to Figure.
2. 1. Put the clamping fixture on the oil scavenge pump drive gear. Align the hole in the clamping fixture and one stud in the angle gearbox support. Install the hexagon nut to attach the clamping fixture to angle gearbox support. Tighten the nut.
  2. Turn the adapter until the gearbox is locked on the drive gear. Lock the adapter.
3. Turn clockwise the handle of the backlash gage by hand and set to zero the dial gage.
4. Make sure that the tip gage touches the setting block on the clamp and the dial gage shows a value of zero.
5. The tools are now set to measure the backlash.
1. Refer to Figure.
2. NOTE
  Make sure all tool faces that touch are clean and not damaged.
  Turn counterclockwise the handle of the backlash gage by hand and read the value of backlash on the dial gage.
  The value must be:
  0.0127 in. (0.32 mm) minimum.
  0.0197 in. (0.50 mm) maximum.
3. Remove IAE 2F10268 Backlash gage tip backlash gage 1 off and IAE 2F10269 Comparator support support comparator.
4. Keep IAE 2F10276 Clamping fixture clamping fixture on place for the next measure.
1. Refer to Figure.
2. 1. Put the expander into the ID of the extension layshaft and the support on the angle gearbox extension. Turn the handle until the backlash gage is locked on the gearshaft. Lock the handle.
3. 1. Put the comparator support on the backlash gage. Align the two holes in the backlash gage and the two special bolts in the comparator support. Install the special bolts to attach the comparator support to the backlash gage. Tighten the special bolts.
4. NOTE
  The IAE 2F10275 Backlash gage tip 1 off has two smooth raised areas on the setting block. Use the outer raised area to measure the circumferential backlash between the oil scavenge pump drive gear and the extension layshaft drive gear.
  Turn clockwise the handle of the backlash gage by hand and set to zero the dial gage.
5. Make sure that the tip gage touches the setting block on the clamp and the dial gage shows a value of zero.
6. The tools are now set to measure the backlash.
1. Refer to Figure.
2. NOTE
  Make sure all tool faces that touch are clean and not damaged.
  Turn counterclockwise the handle of the backlash gage by hand and read the value of backlash on the dial gage.
  The value must be:
  0.0127 in. (0.32 mm) minimum.
  0.0197 in. (0.50 mm) maximum.
3. Remove IAE 2F10276 Clamping fixture clamping fixture 1 off.
4. Keep IAE 2F10275 Backlash gage tip backlash gage and IAE 2F10273 Comparator support support comparator in place for the next measurement.
1. Refer to Figure.
2. 1. Put the clamping fixture on the PMA housing. Align the three holes in the clamping fixture and the three holes in the PMA housing. Install the three special screws and the three hexagon nuts to attach the clamping fixture to housing. Tighten the nuts.
  2. Turn the handle until the PMA shaft is locked. Lock the handle. Lock the adapter.
3. NOTE
  The IAE 2F10275 Backlash gage tip 1 off has two smooth raised areas on the setting block. Use the inner raised area to measure the circumferential backlash between the PMA shaft and the extension layshaft drive gear.
  Turn clockwise the handle of the backlash gage by hand and set to zero the dial gage.
4. Make sure that the tip gage touches the setting block on the clamp and the dial gage shows a value of zero.
5. The tools are now set to measure the backlash.
1. Refer to Figure and SBE 72-0048.
2. NOTE
  Make sure all tool faces that touch are clean and not damaged.
  Turn counterclockwise the handle of the backlash gage by hand and read the value of backlash on the dial gage.
  The value must be:
  Pre SBE 72-0048: 0.0059 in. (0.15 mm) minimum 0.0102 in. (0.26 mm) maximum.
  SBE 72-0048: 0.0098 in. (0.25 mm) minimum 0.0137 in. (0.35 mm) maximum.
3. Remove IAE 2F10270 Clamping fixture clamping fixture 1 off.
4. Keep IAE 2F10275 Backlash gage tip backlash gage and IAE 2F10273 Comparator support support comparator in place for the next measurement.
1. Refer to Figure.
2. 1. Put the clamping fixture on the crank cover bore. Align the two holes in the clamping fixture and the two studs in the gearbox casing. Install the two hexagon nuts to attach the clamping fixture to the gearbox casing. Tighten the nuts.
  2. Turn the handle until the starter idler gear is locked. Lock the handle.
3. NOTE
  The IAE 2F10275 Backlash gage tip 1 off has two smooth raised areas on the setting block. Use the outer raised area to measure the circumferential backlash between the starter idler gear and the extension layshaft drive gear.
  Turn clockwise the handle of the backlash gage by hand and set to zero the dial gage.
4. Make sure that the tip gage touches the setting block on the clamp and the dial gage shows a value of zero.
5. The tools are now set to measure the backlash.
1. Refer to Figure.
2. NOTE
  Make sure all tools faces that touch are clean and not damaged.
  Turn counterclockwise the handle of the backlash gage by hand and read the value of backlash on the dial gage.
  The value must be:
  0.0127 in. (0.32 mm) minimum.
  0.0197 in. (0.50 mm) maximum.
3. Remove IAE 2F10273 Comparator support clamping fixture 1 off and IAE 2F10275 Backlash gage tip backlash gage 1 off.
4. Keep IAE 2F10271 Clamping fixture clamping fixture in place for the next measurement.
1. Refer to Figure.
2. 1. Put the expander into the ID of the starter drive gearshaft. Turn the handle until the backlash gage is locked on the gearshaft. Lock the handle.
3. 1. Put the comparator support on the housing of the starter drive. Align the two holes in the comparator support and two studs in the housing. Install the two hexagon nuts to attach the comparator support to the housing. Tighten the nuts.
4. Turn clockwise the handle of the backlash gage by hand and set to zero the dial gage.
5. Make sure that the tip gage touches the setting block on the clamp and the dial gage shows a value of zero.
6. The tools are now set to measure the backlash.
1. Refer to Figure.
2. NOTE
  Make sure all tool faces that touch are clean and not damaged.
  Turn counterclockwise the handle of the backlash gage by hand and read the value of backlash on the dial gage.
  The value must be:
  0.0127 in. (0.32 mm) minimum.
  0.0197 in. (0.50 mm) maximum.
3. Remove IAE 2F10271 Clamping fixture clamping fixture 1 off.
4. Keep IAE 2F10269 Comparator support comparator support and IAE 2F10268 Backlash gage tip backlash gage in place for the next measurement.
1. Refer to Figure.
2. 1. Put the clamping fixture on the IDG housing. Align the two holes in the clamping fixture and two studs in the IDG housing. Install the two hexagon nuts to attach the clamping fixture to housing. Tighten the nuts.
  2. Turn the handle until the IDG shaft is locked. Lock the handle.
3. Turn clockwise the handle of the backlash gage by hand and set to zero the dial gage.
4. Make sure that the tip gage touches the setting block on the clamp and the dial gage shows a value of zero.
5. The tools are now set to measure the backlash.
1. Refer to Figure.
2. NOTE
  Make sure all tool faces that touch are clean and not damaged.
  Turn counterclockwise the handle of the backlash gage by hand and read the value of backlash on the dial gage.
  The value must be:
  0.0127 in. (0.32 mm) minimum.
  0.0197 in. (0.50 mm) maximum.
3. Remove IAE 2F10269 Comparator support comparator support and IAE 2F10268 Backlash gage tip backlash gage.
4. Keep IAE 2F10274 Clamping fixture clamping fixture in place for the next measurement.
1. Refer to Figure.
2. 1. Put the expander in the ID of deoiler gear. Turn the handle until the backlash gage is locked on the gearshaft. Lock the handle.
3. 1. Put the comparator support on the deoiler casing. Align the two special bolts in the comparator support and two holes in the deoiler casing. Install the two special bolts to attach the clamping fixture to the deoiler casing. Tighten the bolts.
4. Turn clockwise the handle of the backlash gage by hand and set to zero the dial gage.
5. Make sure that the tip gage touches the setting block on the clamp and the dial gage shows a value of zero.
6. The tools are now set to measure the backlash.
1. Refer to Figure.
2. NOTE
  Make sure all tool faces that touch are clean and not damaged.
  Turn counterclockwise the handle of the backlash gage by hand and read the value of backlash on the dial gage.
  The value must be:
  0.0127 in. (0.32 mm) minimum.
  0.0197 in. (0.50 mm) maximum.
3. Remove IAE 2F10274 Clamping fixture clamping fixture 1 off, IAE 2F10272 Backlash gage tip backlash gage 1 off and IAE 2F10273 Comparator support comparator support 1 off.
1. Refer to Figure.
2. 1. Install Hydraulic Pump Drive Gear And Housing Assembly (72-60-23, 01-340) off in the internal groove of the mating ring.
  2. Install the mating ring on the drive gear. Make sure that the large contact face points the front of the gearbox.
  3. Align the lugs on the smaller diameter of the rotating ring with the slots on the inner race of the front roller bearing.
  4. Push the rotating ring against the inner race of the front roller bearing. Use IAE 1F10031 Pusher off.
3. 1. NOTE
    The carbon seal must have the free axial movement during its full travel in the seal housing.
    Put the seal housing with the carbon seal fully in to the CoMat 10-077 APPROVED ENGINE OILS before the installation. Make sure the free movement of the carbon seal.
  2. Install Hydraulic Pump Drive Gear And Housing Assembly (72-60-23, 01-300) off in to the OD groove of the seal housing.
  3. Remove the guide pin from the IAE 1F10003 Pusher off and install in to one of the bolts on the hydraulic pump housing.
  4. Align one of the holes on the seal housing flange with the guide pin. Install the seal housing with the carbon seal over the hydraulic pump drive gear. Push the seal housing in position. Use IAE 1F10003 Pusher pusher 1 off.
  5. Remove the guide pin and install on the pusher.
  6. Install the three washers and bolts which attach the seal housing to the hydraulic pump housing. Torque to 85 lbfin to 95 lbfin (9.604 to 10.734 Nm).
4. 1. Install Transportation Fittings (72-60-03, 01-295) off in to the groove of the retaining ring housing. Install the retaining ring housing in to the end of the drive gear until it touches the end of the ID spline. Install the retaining ring.
  2. Install Transportation Fittings (72-60-03, 01-320) off in to the groove of the plug shaft. Install the plug shaft in the retaining ring housing.
  3. Install the nut and tighten to lock the shaft plug in position.
5. Install the cover on the hydraulic pump housing. Install the four washers and nuts and torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
1. Refer to Figure.
2. 1. Install Fuel Pump Drive Gear And Housing Assembly (72-60-25, 01-160) off in the internal groove of the mating ring.
  2. Install the mating ring on the fuel pump gear drive. Make sure that the large contact face points the rear of the gearbox.
  3. Align the lugs on the smaller diameter of the mating ring with the slots on the inner race of the rear roller bearing.
  4. Push the mating ring against the inner race of the rear roller bearing. Use IAE 1F10031 Pusher off.
3. 1. NOTE
    The carbon seal must have the free axial movement during its full travel in the seal housing.
    Put the seal housing with the carbon seal fully in to CoMat 10-077 APPROVED ENGINE OILS before the installation. Make sure the free movement of the carbon seal.
  2. Install Fuel Pump Drive Gear And Housing Assembly (72-60-25, 01-140) off in to the groove on the seal housing.
  3. Remove the guide pin from the IAE 1F10003 Pusher off and install in to the one of the boltholes on the fuel pump housing.
  4. Align one of the holes on the seal housing flange with the guide pin. Install the seal housing with the carbon seal over the fuel pump drive gear. Push the seal housing in position. Use IAE 1F10003 Pusher pusher 1 off.
  5. Remove the guide pin and install on the pusher.
    Install the three washers and bolts which attach the seal housing to the fuel-pump housing. Torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
1. Refer to Figure.
2. 1. Install Starter Drive Gear And Housing Assembly (72-60-22, 01-180) packing 1 off in the internal groove of the mating ring.
  2. Install the mating ring on the starter drive gear. Make sure that the large contact face points the front of the gearbox.
  3. Align the lugs on the smaller diameter of the mating ring with the slots on the inner race of the front roller bearing.
  4. Push the mating ring against the inner race of the front roller bearing. Use IAE 1F10031 Pusher pusher 1 off.
3. 1. NOTE
    The carbon seal must have the free axial movement during its full travel in the seal housing.
    Put the seal housing with the carbon seal fully in to CoMat 10-077 APPROVED ENGINE OILS before the installation. Make sure the free movement of the carbon seal.
  2. Install Starter Drive Gear And Housing Assembly (72-60-22, 01-140) packing 1 off in to the groove on the seal housing.
  3. Remove the guide pin from the IAE 1F10003 Pusher pusher 1 off and install in to one of the boltholes on the starter drive housing.
  4. Align one of the holes on the seal housing flange with the guide pin. Install the seal housing with the carbon seal over the starter drive gear. Push the seal housing in position. Use IAE 1F10003 Pusher pusher 1 off.
  5. Remove the guide pin and install on the pusher.
  6. Install the three washers and bolts which attach the seal housing to the starter drive housing. Torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
1. Refer to Figure.
2. 1. Install Generator Drive Gear And Housing Assembly (72-60-28, 01-330) off in to the internal groove of the mating ring.
  2. Install the mating ring on the IDG drive gear. Make sure that the large contact face points the rear of the gearbox.
  3. Align the lugs on the smaller diameter of the mating ring with the slots on the inner race of the rear roller bearing.
  4. Push the mating ring against the inner race of the rear roller bearing. Use IAE 1F10032 Pusher off.
3. 1. NOTE
    The carbon seal must have the free axial movement during its fully travel in the seal housing.
    Put the seal housing with the carbon seal fully in to CoMat 10-077 APPROVED ENGINE OILS before the installation. Make sure the free movement of the carbon seal.
  2. Install Generator Drive Gear And Housing Assembly (72-60-28, 01-290) off in to the groove of the seal housing.
  3. Remove the IAE 1F10004 Pusher guide pin from the pusher and install into one of the boltholes on the IDG housing.
  4. Align one of the holes on the seal housing flange with the guide pin. Install the seal housing with the carbon seal over the IDG drive gear. Push the housing in position. Use IAE 1F10004 Pusher off.
  5. Remove the guide pin and install on the pusher.
  6. Install the three washers and bolts which attach the seal housing to the IDG housing. Torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
4. 1. Install Transportation Fittings (72-60-03, 01-440) off in to the groove of the plug shaft retainer. Install the plug shaft retainer in to the end of the drive gear until it touches the end of the ID spline. Install Transportation Fittings (72-60-03, 01-450) retaining ring 1 off.
  2. Install Transportation Fittings (72-60-03, 01-410) off in to the groove of the plug shaft. Install the plug shaft in to the drive gear, over the plug shaft retainer.
  3. Install the nut and tighten to lock the plug shaft in position.
5. Install the cover on the IDG housing. Install the eight washer and bolts. Torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
1. Refer to Figure.
2. 1. NOTE
    The carbon seal must have the free axial movement during its full travel in the air port casing.
    Put the air port casing with the carbon seal fully in to the CoMat 10-077 APPROVED ENGINE OILS before the installation. Make sure the free movement of the carbons seal.
  2. Install ENGINE-DEOILER CASE AND COVER (72-60-31, 01-107) off in to the OD groove of the air port casing.
  3. Install the air port casing on the deoiler casing. Align the holes on the air port casing with the holes on the deoiler casing. Use IAE 1F10072 Pusher pusher to make easier the installation.
  4. Install the three washers and bolts which attach the air port casing to the deoiler casing. Torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).
1. Install ENGINE-MAIN GEARBOX CASE AND FITTINGS (72-60-21, 01-280) packing 1 off in to the grooves on the cover crank.
2. Align the holes on the cover crank with the studs. Install the cover crank in to the seat on the gearbox casing.
3. Install the two washers and nuts and torque to 85 lbfin to 95 lbfin (9.604 Nm to 10.734 Nm).

Main Gearbox Assembly - Fits and Clearances

Main Gearbox Assembly - Figs and Clearances

Main Gearbox Assembly - Fits and Clearances

Oil Nozzles on the Front Right-Hand Side of the Main Gearbox

Oil Nozzles on the Front Left-Hand Side of the Main Gearbox

Oil Nozzle on the Rear Side of the Main Gearbox

Install the Hydraulic Pump Drive Gear (Pre SB 72-0264)

Install the Hydraulic Pump Drive Gear

Install the Fuel Pump Drive Gear

Install the Oil Scavenge Pump Drive Gear

Install the Extension Layshaft Gear

Install the Starter Idler Gear

Install the Angle Gearbox Support

Install The Angle Gearbox Support

Install the Starter Drive Gear

Install the IDG Drive Gear

Install the Deoiler Gearshaft

Install the Deoiler Casing

Install the PMA Drive Gear

Install the Crank Cover

Measure the Circumferential Backlash Between the Fuel Pumpdrive Gear and the Hydraulic Pump Drive Gear

Measure the Circumferential Backlash Between the Oil Scavenge Pumpdrive Gear and the Hydraulic Pump Drive Gear

Measure the Circumferential Backlash Between the Oil Scavenge Pumpdrive Gear and the Extension Layshaft Drive Gear

Measure the Circumferential Backlash Between the PMA Shaftand the Extension Layshaft Drive Gear

Measure the Circumferential Backlash Between the Starter Idler Gearand the Extension Layshaft Gear

Measure the Circumferential Backlash Between the Starter Drive Gear and the Starter Idler Gear

Measure the Circumferential Backlash Between the IDG Gearand the Starter Drive Gear

Measure the Circumferential Backlash Between the Deoiler Gear and the IDG Gear

Setting Block of Backlash Gage IAE 2F10275

Install the Hydraulic Pump Drive Gear (Post SB 72-0264)

Requirements After Job Completion

Follow-On Conditions

NONE

Manufacturer Code:	00BB6
Enterprise Name:	INDESTRUCTIBLE PAINT INC
BU Name:	INDESTRUCTIBLE PAINT INC
Street:	1 INDEPENDENCE DRIVE
City:	MONROE
State:	CT
Zip Code:	06468
Country:	USA
Phone Number:	1-203-880-9130
Fax Number:	1-203-880-9133
Email:	dave@indestructiblepaint.com
Internet:	www.indestructiblepaint.com

Manufacturer Code:	0AM53
Tool Number:	IAE 1F10003
Tool Name:	IAE 1F10003 Pusher

TASK 72-60-10-440-001 Main Gearbox Assembly - Assemble The Main Gearbox Assembly, Assembly-001

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Copyright

Applicability

Common Information

TASK 72-60-10-440-001 Main Gearbox Assembly - Assemble The Main Gearbox Assembly, Assembly-001

General

Note

NOTE

NOTE

Preliminary Requirements

Pre-Conditions

Support Equipment

Consumables, Materials and Expendables

Spares

Safety Requirements

Procedure

SUBTASK 72-60-10-220-051 Make sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4002

SUBTASK 72-60-10-220-052 Make Sure the Fits and Clearances of the Deoiler Gearshaft are in the Limits given at Location 4004

SUBTASK 72-60-10-220-053 Make Sure the Fits and Clearances of the Deoiler Housing are in the Limits given at Location 4006

SUBTASK 72-60-10-220-054 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4007

SUBTASK 72-60-10-220-055 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4010

SUBTASK 72-60-10-220-056 Make Sure the Fits and Clearances of the IDG Gear Drive are in the Limits given at Location 4012

SUBTASK 72-60-10-220-057 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4014

SUBTASK 72-60-10-220-058 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4015

SUBTASK 72-60-10-220-059 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4018

SUBTASK 72-60-10-220-060 Make Sure the Fits and Clearance of the Starter Gear Drive are in the Limits given at Location 4020

SUBTASK 72-60-10-220-061 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given in Location 4022

SUBTASK 72-60-10-220-062 Make Sure the Fits and Clearance of the Angle Gearbox Support are in the Limits given at Location 4023

SUBTASK 72-60-10-220-063 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4025

SUBTASK 72-60-10-220-064 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4027

SUBTASK 72-60-10-220-065 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4030

SUBTASK 72-60-10-220-066 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4032

SUBTASK 72-60-10-220-067 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4033

SUBTASK 72-60-10-220-068 Make Sure the Fits and Clearances of the Angle Gearbox Support are in the Limits given at Location 4034

SUBTASK 72-60-10-220-069 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4036

SUBTASK 72-60-10-220-070 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4038

SUBTASK 72-60-10-220-071 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4041

SUBTASK 72-60-10-220-072 Make Sure the Fits and Clearance of the Hydraulic Pump Gear Drive are in the Limits given at Location 4043

SUBTASK 72-60-10-220-073 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4045

SUBTASK 72-60-10-220-074 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4049

SUBTASK 72-60-10-220-075 Make Sure the Fits and Clearances of the Fuel Pump Gear Drive are in the Limits given at Location 4051

SUBTASK 72-60-10-220-076 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4053

SUBTASK 72-60-10-220-077 Make Sure the Fits and Clearances of the Gearbox Casing are in the Limits given at Location 4054

SUBTASK 72-60-10-220-078 Make Sure the Fits and Clearances of the Angle Gearbox Support are in the Limits given at Location 4055

SUBTASK 72-60-10-220-079 Make Sure the Fits and Clearances of the PMA Drive Housing are in the Limits given at Location 4062

SUBTASK 72-60-10-440-051 Install the Oil Nozzles on the Front Right-hand Side of the Main Gearbox

SUBTASK 72-60-10-440-052 Install the Oil Nozzles on the Front Left-hand Side of the Main Gearbox

SUBTASK 72-60-10-440-053 Install the Oil Nozzle on the Rear Side of the Main Gearbox

SUBTASK 72-60-10-440-054 Install the Oil Scavenge Pump Drive Gear

SUBTASK 72-60-10-440-055 Install the Fuel Pump Drive Gear

SUBTASK 72-60-10-440-056 Install the Hydraulic Pump Drive Gear (Pre SBE 72-0264)

SUBTASK 72-60-10-440-081 Install the Hydraulic Pump Drive Gear (Post SBE 72-0264)

SUBTASK 72-60-10-440-057 Install the Extension Layshaft Gear

NOTE

SUBTASK 72-60-10-440-058 Install the Starter Idler Gear

SUBTASK 72-60-10-440-059 Install the Angle Gearbox Support

SUBTASK 72-60-10-440-060 Install the Starter Drive Gear

SUBTASK 72-60-10-440-061 Install the IDG Drive Gear

SUBTASK 72-60-10-440-062 Install the Starter Drive Housing

SUBTASK 72-60-10-440-063 Install the IDG Housing

SUBTASK 72-60-10-440-064 Install the Deoiler Gear and Impellor

SUBTASK 72-60-10-440-065 Install the Deoiler Casing (Pre SBE 79-0088, SBE 79-0088)

SUBTASK 72-60-10-440-066 Install the PMA Drive Gear

CAUTION

SUBTASK 72-60-10-210-051 Check the Free Rotation of the Gear Train

SUBTASK 72-60-10-440-067 Set the Tools to Measure the Circumferential Backlash between the Fuel Pump Drive Gear and the Hydraulic Pump Drive Gear

NOTE

SUBTASK 72-60-10-220-080 Measure the Circumferential Backlash between the Fuel Pump Drive Gear and the Hydraulic Pump Drive Gear

NOTE

SUBTASK 72-60-10-440-068 Set the Tools to Measure the Circumferential Backlash between the Oil Scavenge Pump Drive Gear and the Hydraulic Pump Drive Gear

SUBTASK 72-60-10-220-081 Measure the Circumferential Backlash between the Oil Scavenge Pump Drive Gear and the Hydraulic Pump Drive Gear

NOTE

SUBTASK 72-60-10-440-069 Set the Tools to Measure the Circumferential Backlash between the Oil Scavenge Pump Drive Gear and the Extension Layshaft Drive Gear

NOTE

SUBTASK 72-60-10-220-082 Measure the Circumferential Backlash between the Oil Scavenge Pump drive Gear and the Extension Layshaft Drive Gear

NOTE

SUBTASK 72-60-10-440-070 Set the Tools to Measure the Circumferential Backlash between the PMA Shaft and the Extension Layshaft, Drive Gear

NOTE

SUBTASK 72-60-10-220-083 Measure the Circumferential Backlash between the PMA Gear Shaft and the Extension Layshaft Drive Gear (SBE 72-0048, Pre SBE 72-0048)