DMC:V2500-A1-72-32-2000-00A-710A-B|Issue No:004|Issue Date:2017-08-01

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

V2500-A1

Common Information

TASK 72-32-20-440-001-A00 No. 3 Bearing Seal, HPC Shaft, And Gearshaft Assembly - Assemble, Assembly-001

General

This TASK gives the procedure to assemble the No. 3 Bearing Rotor Center and Support Assembly.

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.

Special torque data is identified with the symbol * after the torque value.

Lubricate all threads and abutment faces of nuts and bolts with approved engine oils, unless other lubricants are referred to in the procedure. For the approved engine oils and procedures, refer to SPM TASK 70-64-00-640-501.

To identify, lubricate and install seal rings, refer to SPM TASK 70-44-01-400-501.

For cup washer installation, refer to SPM TASK 70-42-04-400-501.

Refer to Figure for a sectional view of a No. 3 Bearing Rotor Center and Support Assembly.

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
Oven	LOCAL	Oven
Torque multiplier	LOCAL	SWEENEY 8200
Hot oil tank	LOCAL	Hot oil tank
Feeler gage	LOCAL	Feeler gage
Protection cover	LOCAL	Protection cover
Hydraulic hand pump	LOCAL	Hydraulic hand pump
Digital depth gage	LOCAL	Digital depth gage
IAE 1J12021 Lifting spacer	0AM53	IAE 1J12021	1
IAE 1J12188 Puller bolt	0AM53	IAE 1J12188	1
IAE 1J12339 Spanner wrench	0AM53	IAE 1J12339	1
IAE 1J12358 Inspection ring	0AM53	IAE 1J12358	1
IAE 1J12359 Inspection bridge	0AM53	IAE 1J12359	1
IAE 1J12367 Tab bender	0AM53	IAE 1J12367	1
IAE 1J12374 Oil flow test stand	0AM53	IAE 1J12374	1
IAE 1J12375 Oil flow check box	0AM53	IAE 1J12375	1
IAE 1J12376 Oil feed adapter	0AM53	IAE 1J12376	1
IAE 1J12378 Ratchet wrench	0AM53	IAE 1J12378	1
IAE 1J12379 Hydraulic pusher	0AM53	IAE 1J12379	1
IAE 1J12380 Hydraulic pusher	0AM53	IAE 1J12380	1
IAE 1J12383 Swash check fixture	0AM53	IAE 1J12383	1
IAE 1J12384 Swash check ring	0AM53	IAE 1J12384	1
IAE 1J12387 Work stand	0AM53	IAE 1J12387	1
IAE 1J12421 Base holder	0AM53	IAE 1J12421	1
IAE 1J12469 Leak test fixture	0AM53	IAE 1J12469	1
IAE 1J12477 Base holder	0AM53	IAE 1J12477	1
IAE 1J12478 Hydraulic pusher/puller	0AM53	IAE 1J12478	1
IAE 1J12502 No.3 bearing guide	0AM53	IAE 1J12502	1
IAE 1J12504 Ring holder	0AM53	IAE 1J12504	1
IAE 1J12505 0AM53 heater	0AM53	IAE 1J12505	1
IAE 1J12556 Measuring block	0AM53	IAE 1J12556	1
IAE 1P16023 Build fixture	0AM53	IAE 1P16023	1
IAE 1F10026 Hydraulic hand pump	0AM53	IAE 1F10026	1
IAE 6F10027 Heater control unit	0AM53	IAE 6F10027	1
IAE 6F10030 Vacuum test cart	0AM53	IAE 6F10030	1
IAE 1P17526 Torque sequence locator	0AM53	IAE 1P17526	1
IAE 1P17043 Knocker puller	0AM53	IAE 1P17043	1

Consumables, Materials and Expendables

Name	Manufacturer	Part Number / Identification
CoMat 01-124 ISOPROPYL ALCOHOL	LOCAL	CoMat 01-124
CoMat 06-069 MARKER	IE207	CoMat 06-069
CoMat 10-077 APPROVED ENGINE OILS	LOCAL	CoMat 10-077
CoMat 06-078 COMPOUND, ANTIGALLING	34227	CoMat 06-078
CoMat 02-130 POLAR GRAPH PAPER	LOCAL	CoMat 02-130

Spares

Name	Manufacturer	Part Number / Identification	Quantity	Remark
Packing			1
Cup washer			1

Safety Requirements

NONE

Procedure

SUBTASK 72-32-20-220-059 Reference Fits and Clearances of the No. 3 Bearing Damper Assembly at Location 2400

Refer to Figure.

Reference the interference at location 2400. If required, use the data written as a note in TASK 72-32-21-200-000 (INSPECTION-000) and TASK 72-32-22-200-000 (INSPECTION-000).

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 2400
Shoulder Stud ENGINE-NO.3 BEARING HOUSING (72-32-21, 01-080) No. 3 Bearing Seal Support Assembly ENGINE-NO.3 BEARING SEAL SUPPORT (72-32-22, 01-040)
Inside Diameter Seal Support Hole	0.3236	Intf
	0.3224	0.000
Stud Outside Diameter	0.3244	0.002
	0.3236	Intf

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 2400
Shoulder Stud ENGINE-NO.3 BEARING HOUSING (72-32-21, 01-080)
No. 3 Bearing Seal Support Assembly ENGINE-NO.3 BEARING SEAL SUPPORT (72-32-22, 01-040)
Inside Diameter Seal Support Hole	8.219	Intf
	8.189	0.000
Stud Outside Diameter	8.240	0.051
	8.220	Intf

SUBTASK 72-32-20-220-068 Reference Fits and Clearances of the Bevel Wheel Gearshaft and the HP Compressor Front Shaft and Seal Assembly at Location 0202

Refer to Figure.

Reference dimensions at location 0202. If required, use the data written as the note in TASK 72-32-23-200-000 (INSPECTION-000) and TASK 72-32-26-200-000 (INSPECTION-000).

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 0202
Bevel Wheel Gearshaft ENGINE-INTERNAL GEARBOX DRIVING GEAR (72-32-26, 01-400)
And
HP Compressor Front Shaft Assembly ENGINE-NO.3 BEARING ROTOR CENTRE (72-32-23, 01-745)
Gearshaft Inside Diameter	5.2363	Intf	5.2363	Intf
	5.2369	-0.0041	5.2369	-0.0041
Shaft Outside Diameter	5.2410	-0.0051	5.2410	-0.0051
	5.2414	Intf	5.2414	Intf

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 0202
Bevel Wheel Gearshaft ENGINE-INTERNAL GEARBOX DRIVING GEAR (72-32-26, 01-400)
And
HP Compressor Front Shaft Assembly ENGINE-NO.3 BEARING ROTOR CENTRE (72-32-23, 01-745)
Gearshaft Inside Diameter	133.000	Intf	133.000	Intf
	133.018	-0.104	133.018	-0.104
Shaft Outside Diameter	133.122	-0.134	133.122	-0.134
	133.134	Intf	133.134	Intf

SUBTASK 72-32-20-220-069 Reference Fits and Clearances of the Bevel Wheel Gearshaft and the HP Compressor Front Shaft and Seal Assembly at Location 0207

Refer to Figure.

Reference dimensions at location 0207. If required, use the data written as the note in TASK 72-32-23-200-000 (INSPECTION-000) and TASK 72-32-26-200-000 (INSPECTION-000).

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 0207
Bevel Wheel Gearshaft ENGINE-INTERNAL GEARBOX DRIVING GEAR (72-32-26, 01-400)
And
HP Compressor Front Shaft Assembly ENGINE-NO.3 BEARING ROTOR CENTRE (72-32-23, 01-745)
Gearshaft Inside Diameter	5.5512	Intf	5.5512	Intf
	5.5518	-0.0035	5.5518	-0.0035
Shaft Outside Diameter	5.5553	-0.0046	5.5553	-0.0046
	5.5558	Intf	5.5558	Intf

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 0207
Bevel Wheel Gearshaft ENGINE-INTERNAL GEARBOX DRIVING GEAR (72-32-26, 01-400)
And
HP Compressor Front Shaft Assembly ENGINE-NO.3 BEARING ROTOR CENTRE (72-32-23, 01-745)
Gearshaft Inside Diameter	141.000	Intf	141.000	Intf
	141.018	-0.087	141.018	-0.087
Shaft Outside Diameter	141.105	-0.117	141.105	-0.117
	141.117	Intf	141.117	Intf

1. Refer to Figure.
  NOTE
  The value of the LASH is defined as the difference between the actual tooth thickness of the gearshaft and the maximum permissible tooth thickness of the gearshaft.
2. Read the value of the LASH identified as "LASH=" (in millimeters) on the gearshaft wheel.
3. Write the value as LASH A (in millimeters) on an applicable record sheet.
1. Refer to Figure and Figure.
  NOTE
  Refer to Figure for a view of the No. 3 Bearing Damper Assembly group.
2. Install IAE 1P16023 Build fixture 1 off in a suitable vise.
3. Install the No. 3 Bearing Housing Assembly into the build fixture with the anti-torque lugs up.
  NOTE
  Do not use engine oil on the threads that go into the No. 3 Bearing Housing Assembly. The threads are coated with CoMat 06-078 COMPOUND, ANTIGALLING.
4. Install the shoulder studs into the No. 3 Bearing Housing Assembly.
5. Use the flats on the studs and torque the studs to 115* lbfin to 130* lbfin (12.993 Nm to 14.688 Nm).
1. Refer to Figure.
2. Use a 0.001 in. (0.02 mm) feeler gage to measure the clearance between the shoulder stud flange and the No. 3 Bearing Housing Assembly, Surface G.
3. The feeler gage must not fit between the shoulder stud flange and the No. 3 Bearing Housing Assembly, Surface G.
1. Refer to Figure and Figure.
2. Install the two seal rings ENGINE-NO.3 BEARING HOUSING (72-32-21, 01-010) into the grooves on the OD of the Housing Assembly. Put the seal ring ends over the pins in the Housing Assembly.
3. Install the Seal Support Assembly on to the shoulder studs. Make sure the four anti-torque lugs on the bearing Housing Assembly go into the four slots in the Seal Support Assembly.
1. Refer to Figure.
2. Install IAE 1P17526 Torque sequence locator 1 off to the No. 3 Bearing Seal Support Assembly.
3. Install the nuts to the tie rods of the shoulder stud.
4. 1. Torque the nuts to 110* lbfin to 120* lbfin (12.428 Nm to 13.558 Nm).
  2. Loosen all the nuts.
  3. Torque the nuts to 110* lbfin to 120* lbfin (12.428 Nm to 13.558 Nm).
5. Remove the torque sequence locator from the Seal Support Assembly.
6. Remove the No. 3 Bearing Housing Assembly from the fixture.
7. Remove the build fixture from the vise.
1. Refer to Figure.
2. Use a 0.001 in. (0.02 mm) feeler gage to measure the clearance between the shoulder stud and the No. 3 Bearing Seal Support Assembly, Surface H.
3. The feeler gage must not fit between the shoulder stud flange and the No. 3 Bearing Seal Support Assembly, Surface H.
1. Refer to Figure, Figure and Figure.
2. Move IAE 1J12477 Base holder 1 off and IAE 1J12478 Hydraulic pusher/puller 1 off to the work area.
3. Put the No. 3 Bearing Housing and Seal Support Assembly into the oven.
4. Increase the temperature of the oven to 300 deg F (150 deg C).
5. Keep the oven temperature at 300 deg F (150 deg C) for 20 minutes.
6. 1. Loosen the nine bolts (part of the base holder) and washers (part of the base holder).
  2. Move the three supports (part of the base holder) to the center of the base (part of the base holder).
  3. WARNING
    BE CAREFUL BECAUSE THE No. 3 BEARING HOUSING AND SEAL SUPPORT ASSEMBLY ARE HOT. USE APPROVED GLOVES WHEN YOU REMOVE IT FROM THE OVEN.
    Remove the No. 3 Bearing Housing and Seal Support Assembly from the oven.
  4. Put the No. 3 Bearing Housing and Seal Support Assembly on the supports.
  5. Move the supports to the outside of the base until the shoulder studs engage with the three slots of each support.
  6. Install the supports to the base with the nine bolts and washers.
  7. Align the 18 holes of the No. 3 Bearing outer race with the 18 shoulder studs.
  8. Put the No. 3 Bearing outer race into the No. 3 Bearing Housing and Seal Support Assembly.
  9. Install the pad (part of the hydraulic pusher/puller) and cylinder assembly (part of the hydraulic pusher/puller) on the rod (part of the base holder) and into the No. 3 Bearing outer race with the washer (part of the base holder) and the nut (parts of the base holder).
  10. Connect the hose (part of IAE 1F10026 Hydraulic hand pump 1 off) to the cylinder.
  11. Pressurize the cylinder to push the No. 3 Bearing outer race into the No. 3 Bearing Housing Assembly.
  12. Hold the pressure until the No. 3 Bearing Housing and Seal Support Assembly become cool.
7. 1. Tighten the nuts with IAE 1J12378 Ratchet wrench 1 off.
  2. Torque the nuts to 110* lbfin to 120* lbfin (12.428 Nm to 13.558 Nm) in the sequence shown in the Figure.
  3. Release the pressure from the cylinder.
  4. Disconnect the hose and remove the hydraulic pump.
  5. Remove the hydraulic pusher/puller from the No. 3 Bearing Outer Race and Seal Support Assembly.
    Remove the nut and washer which attach the pad and cylinder assembly to the No. 3 Bearing outer race.
    Remove the pad and cylinder assembly from the No. 3 Bearing outer race.
8. Refer to TASK 72-32-10-440-001-A00 (ASSEMBLY-001) for the selection of the PTO adjusting washer. On completion of the selection, continue assembly in accordance with the next SUBTASK within this TASK.
1. Refer to Figure.
2. Move IAE 1J12374 Oil flow test stand 1 off and IAE 1J12375 Oil flow check box 1 off to the work area.
3. Install the O-ring (part of IAE 1J12376 Oil feed adapter) to IAE 1J12376 Oil feed adapter 1 off.
4. Put the oil feed adapter to the oil feed port in the front face of the No. 3 Bearing Seal Support Assembly outer flange.
5. Attach the oil feed adapter to the No. 3 Bearing Seal Support Assembly with the two bolts (part of the oil feed adapter) and nuts (part of the oil feed adapter).
6. Put the No. 3 Bearing Outer Race and Seal Support Assembly into the oil flow check box.
7. Connect the oil pressure feed hose (part of the oil flow test stand) to the oil feed adapter.
8. 1. Turn on the switch of the oil flow test stand and increase the pressure and temperature to the subsequent specified value.
    Pressure: between 58.0 psig and 62.0 psig (400 kPa and 427 kPa).
    Temperature: between 150 deg F and 160 deg F (65 deg C and 71 deg C).
  2. Measure the oil flow rate and make sure that it is between 0.100 gal/min. and 0.486 gal/min. (0.38 gal/min. and 1.84 gal/min.) (0.800 lb/min and 3.888 lb/min).
  3. Reject the No. 3 Bearing Outer Race and Seal Support Assembly and do further inspection to find the cause, if the oil flow rate is out of the range in Step.
9. Drain the oil and disconnect the oil pressure feed hose from the oil feed adapter.
10. Remove the bolts and nuts which attach the oil feed adapter to the No. 3 Bearing Outer Race and Seal Support Assembly.
11. Remove the oil feed adapter from the No. 3 Bearing Outer Race and Seal Support Assembly.
12. Remove the No. 3 Bearing Outer Race and the Seal Support Assembly from the oil flow check box.
1. Refer to Figure, Figure, Figure and Figure.
2. Move IAE 1J12358 Inspection ring 1 off, IAE 1J12504 Ring holder 1 off and IAE 1J12502 No.3 bearing guide 1 off to a work bench.
3. Put the guide (part of the inspection ring) on the ring holder.
4. 1. Put the No. 3 Bearing seal seat on the guide.
    NOTE
    The inner race front half has a step at the inner diameter. The inner race rear half has a smaller step and oil slots. Refer to Figure.
  2. Install the No. 3 Bearing rear inner race on the guide.
    The No. 3 Bearing is a matched part. The front inner race and rear inner race halves, the cage and the outer race must all have the same serial No.
  3. Attach the No. 3 Bearing guide on the guide.
  4. Install the No. 3 Bearing Ball and Cage Assembly into the No. 3 Bearing outer race groove.
  5. Lift the No. 3 Bearing and Seal Support Assembly.
  6. Lower slowly the No. 3 Bearing and Seal Support Assembly along the No. 3 Bearing guide.
  7. Hold the No. 3 Bearing Ball and Cage Assembly together by hand and install the No. 3 Bearing and Seal Support Assembly on the No. 3 Bearing rear inner race.
  8. Remove the No. 3 Bearing guide from the guide.
  9. Install the No. 3 Bearing front inner race on the guide.
  10. Attach the No. 3 Bearing seal seat and No. 3 Bearing inner race with the nut (part of the inspection ring).
  11. Tighten the nut.
5. 1. Loosen the bolt (part of the inspection ring) and the nut (part of the inspection ring) and lift the plain washer (part of the inspection ring) to turn the hook washer (part of the inspection ring).
  2. Turn the hook washer to open the center hole of the flange.
  3. Align the hole of the flange with the lift bolt (part of the inspection ring).
  4. Put the flange on to the No. 3 Bearing outer race front face.
  5. Turn the hook washer and insert it under the plain washer.
  6. Tighten the nut and bolt to attach the flange to the No. 3 Bearing Face.
1. Refer to the TASK 72-32-00-430-001 (ASSEMBLY-001).
1. Turn the Fan Frame with the front end up. Refer to the TASK 72-32-00-430-001 (ASSEMBLY-001).
1. Refer to Figure, Figure, Figure and Figure.
2. 1. Install IAE 1J12505 0AM53 heater 1 off on to the rear-inner flange.
  2. Connect the cables of the local heater to IAE 6F10027 Heater control unit 1 off.
  3. Increase the temperature of the rear-inner flange to 194 deg F (90 deg C).
3. Disconnect the cables of the local heater from the heater control.
4. WARNING
  BE CAREFUL, THE LOCAL HEATER IS HOT. USE THE APPROVED GLOVES WHEN YOU TOUCH IT.
  Remove the local heater from the Fan Frame.
5. Attach a hoist to the lift bolt.
6. Lift the No. 3 Bearing and inspection Ring Assembly and move it to the bore of the rear-inner flange of the Fan Frame.
7. Align the dowel pin on the Fan Frame with the locating hole in the No. 3 Bearing Seal Support Assembly.
8. Install the No. 3 Bearing and inspection Ring Assembly to the Fan Frame with the 20 dummy bolts. Torque the bolts to between 180 lbfin. to 220 lbfin. (20.00 Nm to 25.00 Nm).
1. Refer to Figure.
2. Turn the Fan Frame with the rear end up. Refer to TASK 72-32-00-430-001 (ASSEMBLY-001).
3. Install the dial gage into the gage (part of IAE 1J12359 Inspection bridge 1 off) into the clock holder (part of the inspection bridge).
4. Hold the dial gage to the clock holder with the set screw (part of the inspection bridge).
5. Attach the inspection bridge (part of the inspection bridge) to the rear flange of the Fan Frame.
6. Align the clocking pin holes of the inspection bridge with the slots of the guide (part of the inspection ring) so that the clocking pin touches the No. 3 Bearing seal seat.
7. Install the clocking pin (part of the inspection bridge) into the hole of the inspection bridge and touch the point of the clocking pin to the No. 3 Bearing seal seat.
8. 1. Put the clock holder with the dial gage on the outer flange of the inspection bridge.
  2. Make sure the stylus of the dial gage touches the head of the base pin (part of the inspection bridge). Adjust the dial gage to zero.
  3. Move the clock holder from the outer flange to the inner flange of the inspection bridge.
  4. Make sure the stylus of the dial gage touches the head of the clocking pin. Read the indication of the dial gage and write it on an applicable record sheet.
  5. Remove the clock holder with the dial gage and the clocking pin from the inspection bridge.
9. Install the clocking pin into the hole which is 90 degrees apart from the initial hole. Measure the distance X. Refer to Step.
10. Install the clocking pin into the hole which is 180 degrees apart from the initial hole. Measure the distance X. Refer to Step.
11. Install the clocking pin into the hole which is 270 degrees apart from the initial hole. Measure the distance X. Refer to Step.
12. Make sure that the difference between the maximum and the minimum of the four distances does not exceed 0.0012 in. (0.030 mm).
13. If the four distances do not agree with those in Step, do Step to Step again.
14. Take an average of the four distances and write it as distance X on the applicable record sheet.
15. Remove the inspection bridge from the Fan Frame.

SUBTASK 72-32-20-440-059 Find the HPC Adjusting Washer (72-32-26, 01-500 to 72-32-26, 01-508 and 72-32-26,01-511 to 72-32,01-514)

Refer to Figure , Figure and Figure.
NOTE
The HPC adjusting washer is found as an initial selection in this SUBTASK. The last selection of the adjusting washer is done in TASK 72-32-00-430-011-A00 (ASSEMBLY-011).
Find the pin length value K1 (in millimeters) marked on the inspection bridge.
Find the pin length value K2 (in millimeters) marked on the clocking pin.
NOTE
The mounting distance value is marked on the outer surface of the HP Compressor front shaft.
Find the mounting distance value S (in millimeters) of the HP Compressor front shaft.
Find the average distance X measured in Step.

Calculate the minimum valve E1 and the maximum value E2 for selection of the adjusting washer as follows:

E1 (mm)	= = =	K2 + X - K1 - S - H + 28.70 - 0.13 K2 + X - K1 - S - 0.08 + 28.70 - 0.13 K2 + X - K1 - S + 28.49
E2 (mm)	= = =	K2 + X - K1 - S - H + 28.70 + 0.13 K2 + X - K1 - S - 0.08 + 28.70 + 0.13 K2 + X - K1 - S + 28.75

E1 (in.) = E (mm)/25.4.

E2 (in.) = E (mm)/25.4.

Where:

H = The effect of the No. 3 Bearing fit condition difference between the clearance fit on the inspection ring and the interference fit on the gearshaft wheel.

Find the HPC adjusting washer whose thickness is between the value E1 and the value E2.

1. Refer to Figure, Figure and Figure.
2. Turn the Fan Frame with the front end up.
3. Remove the 20 bolts which attach the No. 3 Bearing and inspection ring and inspection Ring Assembly to the Fan Frame.
4. Install the four puller bolts (part of IAE 1J12188 Puller bolt 1 off) into the thread holes in the outer flange of the No. 3 Bearing Seal Support Assembly.
5. Install a hoist to the lift bolt (part of the inspection ring).
6. Tighten the four puller bolts equally until the No. 3 Bearing and inspection Ring Assembly is released from the Fan Frame.
7. Remove the puller bolts from the thread holes in the outer flange of the No. 3 Bearing Seal Support Assembly.
8. Lift the No. 3 Bearing and inspection Ring Assembly and put it on the ring holder on a work bench.
9. Remove the hoist from the lift bolt.
1. Refer to Figure, Figure and Figure.
2. Loosen the nut and turn the hook washer until the hole of the flange is fully open.
3. Remove the flange with the lift bolt from the guide.
4. Remove the nut which attaches the No. 3 Bearing and No. 3 Bearing seal seat to the guide.
5. Remove the No. 3 Bearing front inner race front half from the guide.
6. Install the No. 3 Bearing guide on to the guide.
7. Hold the No. 3 Bearing Ball and Cage Assembly together by hand and remove the No. 3 Bearing Outer Race and Seal Support Assembly from the guide.
8. Remove the No. 3 Bearing guide from the guide.
9. Remove the No. 3 Bearing inner race rear half and the seal seat from the guide.
10. Remove the guide from the ring holder.
1. Refer to Figure and Figure.
  NOTE
  Use the PTO adjusting washer found in TASK 72-32-10-440-001-A00 (ASSEMBLY-001).
2. 1. Dimension A - axial dimension of the PTO adjusting washer.
  2. Dimension B - axial dimension of the No. 3 Bearing inner race front half.
  3. Dimension C - axial dimension of the No. 3 Bearing inner race rear half.
  4. Dimension D - axial dimension between mating surfaces of the No. 3 Bearing seal seat.
  5. Dimension E - axial dimension of the HPC adjusting washer.
  6. Dimension F - axial dimension between mating surfaces of the gearshaft. Use IAE 1J12556 Measuring block 1 off and the depth gage when you measure the dimension F.
  7. Dimension G - axial dimension between mating surfaces with the HPC adjusting washer and front surface of the HP Compressor front shaft and Seal Assembly.
1. Refer to Figure, Figure and Figure.
  NOTE
  The PTO adjusting washer is found in TASK 72-32-10-440-001-A00 (ASSEMBLY-001).
2. Move IAE 1J12421 Base holder 1 off and IAE 1J12379 Hydraulic pusher 1 off to the work area.
3. Install the gearshaft on to the base holder with the bevel gear end down.
4. CAUTION
  DO NOT LET THE BEARINGS TOUCH THE BOTTOM OF THE HOT OIL TANK. A HEAVY SCREEN OR SOME RODS ATTACHED 3 IN. (76 MM) ABOVE THE BOTTOM OF THE TANK WILL KEEP HOT OIL ON ALL SIDES OF THE BEARING.
  Increase the temperature of the No. 3 Bearing inner races to 300 deg F (149 deg C) with an oven or a hot oil tank. Heat the No. 3 Bearing inner races for 20 minutes.
5. Install the PTO adjusting washer on to the gearshaft.
6. WARNING
  THE No. 3 BEARING INNER RACES FRONT HALF ARE HOT. USE APPROVED GLOVES WHEN YOU REMOVE THEM FROM THE OVEN OR HOT OIL TANK.
  Remove the No. 3 Bearing inner race front half from the oven and install it on to the gearshaft.
  NOTE
  The inner race front half has a step at the inner diameter. The inner race rear half has a smaller step and oil slots.
7. Put the hydraulic pusher on the base holder and the No. 3 Bearing inner race front half and connect the hose (part of IAE 1F10026 Hydraulic hand pump 1 off) to the cylinder (part of the hydraulic pusher).
8. Operate the hydraulic pump and increase the oil pressure until the No. 3 Bearing inner race front half touches the PTO adjusting washer.
9. Continue to push the No. 3 Bearing inner race front half until the front half becomes cool.
10. Release the pressure from the hose.
11. Remove the hose from the hydraulic cylinder.
12. Remove the hydraulic pusher from the No. 3 Bearing inner race front half and the base holder.
13. Install the No. 3 Bearing guide on to the gearshaft and the No. 3 Bearing inner race front half.
  NOTE
  Hold the No. 3 Ball and Cage Assembly together by hand when you move the No. 3 Bearing and Seal Support Assembly, because the Ball and Cage Assembly can release from the outer race.
14. Slowly lower the No. 3 Bearing and Seal Support Assembly along the No. 3 Bearing guide and install it on to the No. 3 Bearing inner race front half.
15. Remove the No. 3 Bearing guide from the gearshaft and the No. 3 Bearing.
16. WARNING
  THE No. 3 BEARING INNER RACES FRONT HALF ARE HOT. USE APPROVED GLOVES WHEN YOU REMOVE THEM FROM THE OVEN OR HOT OIL TANK.
  CAUTION
  YOU MUST MAKE SURE THAT THE NO. 3 BEARING BALLS ARE IN THE CORRECT POSITION BEFORE YOU INSTALL THE REAR INNER RACE. INCORRECT POSITION CAN CAUSE DAMAGE TO THE BALLS WHEN YOU PUSH THE REAR INNER RACE.
  Remove the No. 3 Bearing inner race rear half from the oven and install it on the gearshaft.
17. Put the hydraulic pusher on the base holder and connect the hose to the hydraulic cylinder.
18. Operate the hydraulic pump and increase the oil pressure until the No. 3 Bearing inner race front half touches the No. 3 Bearing inner race front half.
19. Continue to push the rear half until the No. 3 Bearing inner race rear half becomes cool.
20. Release the pressure from the hose.
21. Remove the hose from the hydraulic cylinder.
22. Remove the hydraulic pusher from the No. 3 Bearing inner race rear half, the gearshaft and the base holder.
23. Use a 0.001 in. (0.02 mm) feeler gage to measure the clearance between the adjusting washer and the bevel gear mating face. The feeler gage must not fit between the adjusting washer and the bevel gear.
1. Refer to Figure.
  NOTE
  The No. 3 Bearing Seal Assembly is assembled in TASK 72-32-25-440-001 (ASSEMBLY-001).
2. Move IAE 1J12469 Leak test fixture 1 off to the work area.
3. Install the seal ring A (part of the leak test fixture) in the groove in the body (part of the leak test fixture).
4. Install the seal ring B (part of the leak test fixture) in the groove in the ring guide (part of the leak test fixture).
5. Put the No. 3 Bearing and the Gearshaft Assembly on the ring guide and the body.
6. Attach the No. 3 Bearing Seal Support Assembly to the ring guide and the body with the outer clamp (part of the leak test fixture), the six bolts (part of the leak test fixture) and washers (part of the leak test fixture). Tighten the six bolts.
7. Install the No. 3 Bearing seal seat on to the gearshaft and the No. 3 Bearing.
8. Lubricate the new ENGINE-NO.3 BEARING REAR OIL SEAL (72-32-25, 02-350) packing 1 off with CoMat 10-077 APPROVED ENGINE OILS.
9. Install the packing in the groove in the No. 3 Bearing Seal Assembly.
10. Attach the No. 3 Bearing Seal Assembly ENGINE-NO.3 BEARING REAR OIL SEAL (72-32-25, 02-100) on the No. 3 Bearing Seal Support Assembly rear flange with the nine bolts "NO.3 BEARING,ROTOR CENTRE & SUPPORT ASSY (72-32-20, 01-140).
11. Torque the bolts to 85 lbfin to 105 lbfin (10.00 Nm to 12.00 Nm).
12. Install the inner clamp (part of the leak test fixture) on the stud bolt (part of the leak test fixture), the body and the No. 3 Bearing seal seat with the nut (part of the leak test fixture) and the washer (part of the leak test fixture).
1. Refer to Figure.
2. Move IAE 6F10030 Vacuum test cart 1 off to the work area.
3. Connect the hose (part of the vacuum test cart) to the fitting (part of the leak test fixture).
4. Lower the pressure of the chamber of the leak test fixture with the vacuum test cart.
5. Set the pressure to 20 inHg (500 mmHg) and measure the volume of the leak air. Make sure that the leakage is not more than 5 ppH. Based on the ambient pressure, refer to the table below for the vacuum pressure in psia.
  Ambient Pressure of the Day (psia)
  Vacuum Pressure (psia)
  14.7
  4.9
  14.5
  4.7
  14.3
  4.5
  14.1
  4.3
  13.9
  4.1
  13.7
  3.9
  13.5
  3.7
  13.3
  3.5
  13.1
  3.3
  Vacuum pressure (psia) = Ambient pressure of the day (psia) - 9.8 psia
6. Disconnect the hose from the fitting.
7. Remove the six bolts and washers which attach the outer clamp to the ring guide and the No. 3 Bearing Seal Support Assembly.
8. Remove the outer clamp from the ring guide and the No. 3 Bearing Seal Support Assembly.
9. Remove the nut and the washer which attach the inner clamp to the stud bolt, the body and the No. 3 Bearing seal seat.
10. Remove the inner clamp from the stud bolt, the body and the No. 3 Bearing seal seat.
11. Remove the No. 3 Bearing Gearshaft, Support and Seal Assembly from the ring guide and the body.
1. Put a clean soft mat on the work bench and put the No. 3 Bearing, Gearshaft, Support and Seal Assembly on to the mat with the bevel gear end down.
  NOTE
  The IAE 1J12021 Lifting spacer 1 off keeps the clearance between the flanges of the No. 3 Bearing Seal Assembly and the No. 3 Bearing Seal Support Assembly to permit the installation of a tool when you lift the No. 3 Bearing Seal Assembly.
2. Remove the nine bolts which attach the No. 3 Bearing Seal Assembly to the No. 3 Bearing Seal Support Assembly.
3. 1. Install IAE 1P17043 Knocker puller 1 off to the No. 3 Bearing Seal Assembly.
  2. Pull out the No. 3 Bearing Seal Assembly until the clearance between the flanges of the No. 3 Bearing Seal Assembly and the No. 3 Bearing Seal Support Assembly becomes 0.098 in. (2.50 mm).
  3. Remove the knocker puller.
4. Install the three spacers (part of the lifting spacer) into the clearance at every 120 degrees. Align the slots of the three spacers with the boltholes of the No. 3 Bearing Seal Support Assembly.
5. Attach the No. 3 Bearing Seal Assembly and three spacers to the No. 3 Bearing Seal Support Assembly with the nine bolts. Tighten the bolts lightly.
1. Refer to Figure.
  NOTE
  The HP Compressor front shaft and Seal Assembly is assembled in TASK 72-32-23-440-001-A00 (ASSEMBLY-001).
2. 1. Move IAE 1J12339 Spanner wrench 1 off and IAE 1J12387 Work stand 1 off to the work area.
  2. Install the parts of the spanner wrench on the work stand.
    Install the base (part of the spanner wrench) on the work stand with the six bolts (part of the spanner wrench).
    Install the adapter (part of the spanner wrench) on the base with the eight bolts (part of the spanner wrench).
  3. Install the HP Compressor front shaft and Seal Assembly on the adapter.
    Clean the curvic teeth on the HP Compressor front shaft and the adapter.
    Put the HP Compressor front shaft and Seal Assembly on the adapter.
    Install a protection cover into the HP Compressor front shaft inner diameter to prevent damage to the inner surface of the HP Compressor front shaft while you install the 20 dummy bolts.
    Attach the HP Compressor front shaft and Seal Assembly on the adapter with the 20 dummy bolts and the two plate nuts (part of the spanner wrench).
3. Install the HPC adjusting washer on the HP Compressor front shaft. The adjusting washer thickness was found in the Step.
4. 1. Increase the temperature of the No. 3 Bearing, Gearshaft, Support and Seal Assembly to 347 deg F to 356 deg F (175 deg C to 180 deg C) in a hot oil tank or oven for 90 to 120 minutes.
  2. Remove the No. 3 Bearing, Gearshaft, Support and Seal Assembly from the hot oil tank or oven.
  3. Put the No. 3 Bearing, Gearshaft, Support and Seal Assembly on the HP Compressor front shaft and Seal Assembly.
  4. Install IAE 1J12380 Hydraulic pusher 1 off on the HP Compressor front shaft and the No. 3 Bearing, Gearshaft, Support and Seal Assembly.
    Loosen the nut (part of the hydraulic pusher) and the washer (part of the hydraulic pusher) on the shaft (part of the hydraulic pusher).
    Install the shaft on the work stand.
    Put the end of the pusher (part of hydraulic pusher) on the front face of the gearshaft.
    Hold the plunger of the hydraulic clyinder (part of the hydraulic pusher) with the nut and the washer.
  5. Connect the hose (part of the hydraulic hand pump) to the hydraulic cylinder.
  6. Pressurize the cylinder and hold the pressure until the assembly becomes cool.
5. Release the pressure, remove the hose from the cylinder and remove the hydraulic pusher from the HP Compressor front shaft and Seal Assembly.
1. Refer to Figure.
2. Measure the axial dimension Y with an applicable depth gage. Dimension Y is from the front surface of the HP Compressor front shaft to the front mating surface of the gearshaft.
3. 1. Calculate the assembled dimension YC from the individual parts dimensions A, B, C, D, E, F and G. Refer to the Step.
    YC = G - A - B - C - D - E - F.
  2. Examine YC and Y. Make sure the difference between YC and Y is not more than 0.00079 in. (0.0200 mm).
4. If the difference is more than 0.00079 in. (0.0200 mm), disassemble the assembly and return to Step. For the disassembly procedure, refer to TASK 72-32-20-040-001 (DISASSEMBLY).
1. Refer to Figure, Figure and Figure.
2. Align the tang of the new ENGINE-INTERNAL GEARBOX DRIVING GEAR (72-32-26, 01-350) cup washer 1 off with the slot of the gearshaft.
3. Install the cup washer in the gearshaft.
4. Install the No. 3 Bearing Nut ENGINE-INTERNAL GEARBOX DRIVING GEAR (72-32-26, 01-300) in the cup washer.
5. 1. Install the guide (part of the spanner wrench) into the base.
  2. Align the 18 teeth of the wrench (part of the spanner wrench) with the 18 slots of the No. 3 Bearing Nut and install the wrench on to the No. 3 Bearing Nut.
  3. Lift and transfer the torque multiplier with the use of a hoist to the work area.
  4. Align the teeth of the spline in the torque multiplier with the teeth of the spline on the wrench.
  5. Install the torque multiplier to the wrench and clamp it with the holder (part of the spanner wrench), the stopper (parts of the spanner wrench) and the bolt (parts of the spanner wrench).
  6. Torque the No. 3 Bearing Nut to 14500 lbfin (1640 Nm).
  7. Decrease the torque to 0 lbfin (0 Nm).
  8. Torque the No. 3 Bearing Nut to 14500 lbfin (1640 Nm). Mark the turning angle of the torque multiplier output shaft on the indicator (parts of the spanner wrench).
    NOTE
    The output torque of the SWEENEY 8200 torque multiplier is 10.7 times of the input torque, as follows: input torque 1762 lbfin (199 Nm) output torque 18850 lbfin (2130 Nm) or, input torque 1355 lbfin (153 Nm) output torque 14500 lbfin (1640 Nm).
  9. Increase the torque on the No. 3 Bearing Nut to 18850 lbfin (2130 Nm).
  10. Decrease the torque to 0 lbfin (0 Nm).
  11. Torque the No. 3 Bearing Nut to 14500 lbfin (1640 Nm).
  12. Check the angular position of the output shaft of the torque multiplier and confirm it is within 1 degree from the mark made in Step.
  13. Torque the No. 3 Bearing Nut to 18850 lbfin (2130 Nm).
  14. Remove the bolt, the stopper and the holder from the spanner wrench and then remove the torque multiplier.
  15. Remove the wrench from the No. 3 Bearing Nut.
  16. Remove the guide from the base.
  17. Remove the No. 3 Bearing Rotor Center and Support Assembly from the adapter.
    Loosen the 20 dummy bolts which attach the HP Compressor front shaft and Seal Assembly to the adapter.
    Remove the 20 dummy bolts and the two plate nuts.
    Remove the No. 3 Bearing Rotor Center and Support Assembly from the adapter.
1. Refer to Figure and Figure.
2. Move IAE 1J12383 Swash check fixture 1 off and IAE 1J12384 Swash check ring 1 off to the work area.
3. Turn the No. 3 Bearing Rotor Center and Support Assembly with the rear end up.
4. Install the No. 3 Bearing Rotor Center and Support Assembly into the swash check fixture and attach it with the 10 bolts. Tighten the bolts.
5. Check the clearance between the mating surfaces of the No. 3 Bearing Seal Support Assembly and the swash check fixture with a 0.0008 in. (0.02 mm) feeler gage. The feeler gage must not fit between the two flanges.
  NOTE
  You cannot turn the HP Compressor front shaft by hand if the No. 3 Bearing Seal Assembly contacts the No. 3 Bearing seal seat.
6. 1. Loosen the nine bolts which attach the No. 3 Bearing Seal Assembly to the Seal Support Assembly.
  2. Install the three puller bolts (part of IAE 1J12188 Puller bolt 1 off) into the threaded holes in the No. 3 Bearing Seal Support Assembly.
  3. Tighten the puller bolts to lift the No. 3 Bearing Seal Assembly until the HP Compressor front shaft and Seal Assembly can rotate freely, or the No. 3 Bearing Seal Assembly touches the bolts of the HP Compressor front shaft and Seal Assembly.
  4. Remove the puller bolts.
7. Clean the curvic coupling teeth on the swash check ring and the HP Compressor front shaft with a clean cloth made moist with CoMat 01-124 ISOPROPYL ALCOHOL.
8. Install the swash check ring on the curvic coupling of the HP Compressor front shaft and Seal Assembly.
9. 1. Tighten all the bolts lightly.
  2. Torque the bolts to 65 lbfin to 75 lbfin (7.3 Nm to 8.5 Nm) in the sequence shown in the Figure.
  3. Torque the bolts to 127 lbfin to 143 lbfin (14.4 Nm to 16.2 Nm) in the same sequence.
1. Refer to Figure and Figure.
2. Move IAE 1J12387 Work stand 1 off and IAE 1J12384 Swash check ring 1 off to the work area.
3. Turn the No. 3 Bearing Rotor Center and Support Assembly with the rear end up.
4. Install the No. 3 Bearing Rotor Center and Support Assembly into the swash check fixture and attach it with the 10 bolts. Tighten the bolts.
5. Check the clearance between the mating surfaces of the No. 3 Bearing Seal Support Assembly and the swash check fixture with a 0.0008 in. (0.02 mm) feeler gage. The feeler gage must not fit between the two flanges.
  NOTE
  You cannot turn the HP Compressor front shaft by hand if the No. 3 Bearing Seal Assembly contacts the No. 3 Bearing seal seat.
6. 1. Loosen the nine bolts which attach the No. 3 Bearing Seal Assembly to the Seal Support Assembly.
  2. Lift the No. 3 Bearing Seal Assembly until the HP Compressor front shaft and Seal Assembly can rotate freely, or the No. 3 Bearing Seal Assembly touches the bolts of the HP Compressor front shaft and Seal Assembly. Use a screwdriver made from copper when you lift the No. 3 Bearing Seal Assembly.
  3. Remove the three lifting spacers.
7. Clean the curvic coupling teeth on the swash check ring and the HP Compressor front shaft with a clean cloth made moist with CoMat 01-124 ISOPROPYL ALCOHOL.
8. Install the swash check ring on the curvic coupling of the HP Compressor front shaft and Seal Assembly.
9. 1. Tighten all the bolts lightly.
  2. Torque the bolts to 65 lbfin to 75 lbfin (7.3 Nm to 8.5 Nm) in the sequence shown in the Figure.
  3. Torque the bolts to 127 lbfin to 143 lbfin (14.4 Nm to 16.2 Nm) in the same sequence.
1. Refer to Figure, Figure and Figure.
2. Use CoMat 06-069 MARKER to identify the position of the HP Compressor front shaft in relation to the swash check ring. Make a correlation mark between the HP Compressor front shaft and the swash check ring curvic couplings inner diameters. Refer to the SPM TASK 70-09-01-400-501.
3. 1. Measure the swash at the 12 equally spaced positions.
  2. Calculate the FIR and the angle of the swash. Make a mark on CoMat 02-130 POLAR GRAPH PAPER to show the FIR and angle and identify it as S1.
  3. Measure the concentricity at the 12 equally spaced positions.
  4. Calculate the FIR and the angle of the concentricity. Make a mark on the polar graph paper to show the FIR and angle, and identify it as R1.
4. 1. Remove the 20 bolts and nuts from the swash check ring and the HP Compressor front shaft.
  2. Turn the swash check ring through 180 degrees.
  3. Install the swash check ring on to the HP Compressor front shaft. Refer to Step or SUBTASK 72-32-20-440-067-B00.
5. Measure the swash and concentricity, refer to Step. Identify the swash as S2 and the concentricity as R2 on the polar graph paper.
6. 1. Make a line between the points S1 and S2. Make a mark at the middle position between the points S1 and S2. Identify this point as S3.
  2. Make a line between the points R1 and R2. Make a mark at the middle position between the points R1 and R2. Identify this point as R3.
  3. Make a line between the point S3 and the center of the polar graph paper.
  4. Make a line between the point R3 and the center of the polar graph paper.
    NOTE
    The distance G0 between the point S1 or S2 and the point S3 shows the swash error in the tools.
  5. The distance H0 between the center of the polar graph paper and the point S3 shows the correct swash of the HP Compressor front shaft.
  6. Write down the quantity and angle of the correct swash.
    NOTE
    The distance J0 between the points R1 or R2 and the point R3 shows the concentricity error in the tools.
  7. The distance Z0 between the center of the polar graph paper and the point R3 shows the correct concentricity of the HP Compressor front shaft.
  8. Write down the quantity and angle of the correct concentricity.
7. The maximum permitted swash and concentricity are 0.0010 in. (0.025 mm). If the swash and/or concentricity is more than this value then reject the No. 3 Bearing Rotor Center and Support Assembly and do a further inspection to find the cause.
1. Tighten the nine bolts until the flange of the No. 3 Bearing Seal Assembly touches the No. 3 Bearing Seal Support Assembly.
2. Tighten the bolts to 85 lbfin to 105 lbfin (10.00 Nm to 12.00 Nm).
3. Remove the No. 3 Bearing Rotor Center and Support Assembly from the swash check fixture.
1. Install the three spacers (part of the lifting spacer) into the clearance at every 120 degrees. Align the slots of the three spacers with the bolts which attach the No. 3 Bearing Seal Assembly to the No. 3 Bearing Seal Support Assembly.
  NOTE
  The lifting spacer must remain in the No. 3 Bearing Rotor Center and Support Assembly until the backlash check of the bevel gears is completed in TASK 72-32-10-440-001-A00 (ASSEMBLY-001).
2. Attach the No. 3 Bearing Seal Assembly and three spacers to the No. 3 Bearing Seal Support Assembly with the nine bolts. Tighten the bolts lightly.
3. Remove the No. 3 Bearing Rotor Center and Support Assembly from the swash check fixture.
1. Refer to Figure and Figure.
2. Turn the No. 3 Bearing Rotor Center and Support Assembly on the work bench from the rear end up to the front end up.
3. Install the protection cover into the HP Compressor front shaft inner diameter.
4. Install the No. 3 Bearing Rotor Center and Support Assembly on the adapter (part of spanner wrench) and attach it with the 20 dummy bolts and two plate nuts (part of the spanner wrench).
5. Bend the front part of the cup washer into the groove of the No. 3 Bearing Nut with the tab bender (Part of IAE 1J12367 Tab bender 1 off).
6. Inspect the bent part of the cup washer and make sure it has no damage.
7. Remove the 20 dummy bolts and the protection cover.
8. Remove the No. 3 Bearing Rotor Center and Support Assembly from the adapter and put it on a pallet.

Sectional View of the No. 3 Bearing Rotor Center and Support Assembly

Reference Fits and Clearances of the No. 3 Bearing Damper Assembly at Location 2400

Reference Fits and Clearances of the Bevel Wheel Gearshaft and the HP Compressor Front shaft and Seal Assembly at Location 0202 and 0207

Find the Value of the LASH of the Bevel Wheel Gearshaft

Install the Shoulder Studs in to the No. 3 Bearing Housing

Install the No. 3 Bearing Seal Support on the No. 3 Bearing Housing

Install the No. 3 Bearing Outer Race in to the No. 3 Bearing Housing and Seal Support Assembly

Examine the Oil Flow in the No. 3 Bearing Outer Race and Seal Support Assembly

Sheet 1

Sheet 2

Sheet 3

No. 3 Bearing and Support Assembly

Install the No. 3 Bearing and Inspection Ring Assembly in to the Fan Frame Assembly

Sheet 1

Sheet 2

Sheet 3

Measure the Distance X to Find the HPC Adjusting Washer Thickness

Find the HPC Adjusting Washer

Sheet 1

Sheet 2

Measure the Axial Dimensions of the No. 3 Bearing and the Related Parts

Sheet 1

Sheet 2

Sheet 3

Install the No. 3 Bearing, Bevel Gear, Support and Seal Assembly on to the Leak Test Fixture

Install the No. 3 Bearing, Gearshaft, Support and Seal Assembly on the HP Compressor Front Shaft and Seal Assembly

Sheet 1

Sheet 2

Assemble the No. 3 Bearing, Gearshaft, Support and Seal Assembly to the HP Compressor Front Shaft and Seal Assembly with the No. 3 Bearing Nut

Sheet 1

Sheet 2

Calculate the Correct Swash and Concentricity Values

Bend the Cup Washer into the Groove of the No. 3 Bearing Nut

Requirements After Job Completion

Follow-On Conditions

NONE

Manufacturer Code:	0AM53
Enterprise Name:	IAE INTERNATIONAL AERO ENGINES AG
BU Name:	NULL
Building:	SUITE 400
Street:	628 HEBRON AVENUE
City:	GLASTONBURY
State:	CT
Zip Code:	06033
Country:	USA

Manufacturer Code:	34227
Enterprise Name:	SANDSTROM PRODUCTS CO
BU Name:	SANDSTROM PRODUCTS CO
Street:	224 MAIN ST
P.O. Box:	547
City:	PORT BYRON
State:	IL
Zip Code:	61275
Country:	USA
Phone Number:	1-309-523-2121, 1-800-959-0675
Fax Number:	1-309-523-3912
Internet:	www.sandstromproducts.com

Manufacturer Code:	IE207
Enterprise Name:	DELETED, REFER TO 16956

Manufacturer Code:	LOCAL
Enterprise Name:	LOCALLY SUPPLIED

Ambient Pressure of the Day (psia)	Vacuum Pressure (psia)
14.7	4.9
14.5	4.7
14.3	4.5
14.1	4.3
13.9	4.1
13.7	3.9
13.5	3.7
13.3	3.5
13.1	3.3

Manufacturer Code:	LOCAL
Tool Number:	Digital depth gage
Tool Name:	Digital depth gage

TASK 72-32-20-440-001-A00 No. 3 Bearing Seal, HPC Shaft, And Gearshaft Assembly - Assemble, Assembly-001

Export Control

Copyright

Applicability

Common Information

TASK 72-32-20-440-001-A00 No. 3 Bearing Seal, HPC Shaft, And Gearshaft Assembly - Assemble, Assembly-001

General

NOTE

NOTE

Preliminary Requirements

Pre-Conditions

Support Equipment

Consumables, Materials and Expendables

Spares

Safety Requirements

Procedure

SUBTASK 72-32-20-220-059 Reference Fits and Clearances of the No. 3 Bearing Damper Assembly at Location 2400

SUBTASK 72-32-20-220-068 Reference Fits and Clearances of the Bevel Wheel Gearshaft and the HP Compressor Front Shaft and Seal Assembly at Location 0202

SUBTASK 72-32-20-220-069 Reference Fits and Clearances of the Bevel Wheel Gearshaft and the HP Compressor Front Shaft and Seal Assembly at Location 0207

SUBTASK 72-32-20-220-051 Find the Value of the LASH of the Bevel Wheel Gearshaft (Gearshaft) (72-32-26, 01-400)

NOTE

SUBTASK 72-32-20-440-051 Install the Shoulder Studs (72-32-21,01-080) in to the No. 3 Bearing Housing Assembly (72-32-21,01-020)

NOTE

NOTE

SUBTASK 72-32-20-220-052 Do the Clearance Check on the Shoulder Stud

SUBTASK 72-32-20-440-052 Install the No. 3 Bearing Seal Support Assembly (72-32-22,01-040) on to the No. 3 Bearing Housing Assembly

SUBTASK 72-32-20-440-053 Install and Torque the Nuts (72-32-22,01-100)

SUBTASK 72-32-20-220-053 Do the Clearance Check on the Shoulder Stud

SUBTASK 72-32-20-440-054 Install the No. 3 Bearing Outer Race (72-32-24,01-100) in to the No. 3 Bearing Housing and Seal Support Assembly

WARNING

SUBTASK 72-32-20-710-051 Examine the Oil Flow in the No. 3 Bearing Outer Race and Seal Support Assembly

SUBTASK 72-32-20-440-055 Install the No. 3 Bearing Seal Seat (72-32-25,02-400) and the No. 3 Bearing and Seal Support Assembly to the Inspection Ring

NOTE

SUBTASK 72-32-20-440-056 Install the Fan Frame on to the Turnover Stand

SUBTASK 72-32-20-440-057 Turn the Fan Frame

SUBTASK 72-32-20-440-058 Install the No. 3 Bearing and Inspection Ring Assembly into the Fan Frame

WARNING

SUBTASK 72-32-20-220-054 Measure the Distance X to find the HPC Adjusting Washer Thickness

SUBTASK 72-32-20-440-059 Find the HPC Adjusting Washer (72-32-26, 01-500 to 72-32-26, 01-508 and 72-32-26,01-511 to 72-32,01-514)

NOTE

NOTE

SUBTASK 72-32-20-440-060 Remove the No. 3 Bearing and Inspection Ring Assembly from the Fan Frame

SUBTASK 73-32-20-440-061 Disassemble the No. 3 Bearing and Inspection Ring Assembly

SUBTASK 72-32-20-220-055 Measure the Axial Dimensions of the No. 3 Bearing and the Related Parts

NOTE

SUBTASK 72-32-20-440-063 Install the PTO Adjusting Washer and the No. 3 Bearing and Seal Support Assembly on to the Gearshaft

NOTE

CAUTION

WARNING

NOTE

NOTE

WARNING

CAUTION

SUBTASK 72-32-20-440-064 Install the No. 3 Bearing Gearshaft, Support and Seal Assembly on to the Leak Test Fixture

NOTE

SUBTASK 72-32-20-790-051 Do the Leak Test on the No. 3 Bearing Seal Assembly

SUBTASK 72-32-20-440-069 Install IAE 1J12021 Lifting Spacer between the No. 3 Bearing Seal Support and No. 3 Bearing Seal Assembly (SBE 72-0132)

NOTE

SUBTASK 72-32-20-440-065 Install the No. 3 Bearing, Gearshaft, Support and Seal Assembly to the HP Compressor Front Shaft and Seal Assembly (72-32-23, 01-700)

NOTE

WARNING

CAUTION

NOTE

SUBTASK 72-32-20-220-056 Examine the Dimension to Make Sure that the No. 3 Bearing and the Related Parts Assembled Correctly

SUBTASK 72-32-20-440-066 Assemble the No. 3 Bearing, Gearshaft, Support and Seal Assembly to the HP Compressor Front Shaft and Seal Assembly with the No. 3 Bearing Nut

NOTE

SUBTASK 72-32-20-440-067-A00 Prepare the Swash and Concentricity Check of the Curvic Coupling of the HP Compressor Front Shaft (Pre SBE 72-0132)

NOTE

SUBTASK 72-32-20-440-067-B00 Prepare the Swash and Concentricity Check of the Curvic Coupling of the HP Compressor Front Shaft (SBE 72-0132)

NOTE

SUBTASK 72-32-20-220-057 Examine the Swash and the Concentricity of the Curvic Coupling of the HP Compressor Front Shaft

NOTE

NOTE

NOTE

SUBTASK 72-32-20-440-070-A00 Attach the No. 3 Bearing Seal Assembly to the No. 3 Bearing Seal Support Assembly (Pre SBE 72-0132)

SUBTASK 72-32-20-440-070-B00 Attach the No. 3 Bearing Seal Assembly to the No. 3 Bearing Seal Support Assembly (SBE 72-0132)

NOTE

SUBTASK 72-32-20-440-068 Bend the Cup Washer into the Groove of the No. 3 Bearing Nut

Figure: Sectional View of the No. 3 Bearing Rotor Center and Support Assembly

Sectional View of the No. 3 Bearing Rotor Center and Support Assembly