TASK 72-60-10-040-001 Main Gearbox Assembly - Disassemble The Main Gearbox Assembly, Disassembly-001

DMC:V2500-A0-72-60-1000-01A-530A-B|Issue No:004.00|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 72-60-10-040-001 Main Gearbox Assembly - Disassemble The Main Gearbox Assembly, Disassembly-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.

Apply the approved CoMat 10-058 PENETRATING OIL before the removal of threaded parts and parts with an interference fit. Let the parts soak before removal.

Discard all rubber seal rings, cotter pins and seal washers removed in this procedure.

Remove and discard the lockwire before any part is disconnected or removed.

Transportation covers/blanks must be installed immediately after the removal of the components.

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

The components of each drive assembly must be correctly identified and kept together in a protective container.

In this TASK it can be necessary to refer from one illustration to other illustrations. If this is necessary, the illustrations are identified by the 4th and 5th element numbers only.

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

NameManufacturerPart Number / IdentificationQuantityRemark
IAE 1F10007 Puller0AM53IAE 1F100071
IAE 1F10008 Puller0AM53IAE 1F100081
IAE 1F10009 Puller0AM53IAE 1F100091
IAE 1F10010 Puller0AM53IAE 1F100101
IAE 1F10067 Puller0AM53IAE 1F100671
IAE 1F10069 Puller0AM53IAE 1F100691
IAE 1F10154 Build stand0AM53IAE 1F101541
IAE 1F10158 Puller0AM53IAE 1F101581
IAE 1F10159 Puller0AM53IAE 1F101591
IAE 1F10364 Puller0AM53IAE 1F103641
IAE 1F10365 Puller0AM53IAE 1F103651
IAE 5F10048 Gearbox handling adapter0AM53IAE 5F100481
IAE 1F10230 Drift, installation0AM53IAE 1F10230

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 10-058 PENETRATING OILX222XCoMat 10-058

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-60-10-040-051 Remove the Crank Cover

    1. Refer to Figure.

    2. Remove the two nuts and washers which attach the crank cover to the gearbox casing.

    3. Remove the crank cover from the gearbox casing.

    4. Remove and discard the packing.

    2. SUBTASK 72-60-10-040-052 Remove the PMA Gear Drive Assembly

    1. Refer to Figure.

    2. Remove the nuts which attach the PMA drive gear to the PMA drive housing and to the gearbox casing.

    3. Remove the bracket.

    4. Remove the PMA drive gear from the PMA drive housing.

    5. Remove and discard the two packings.

    3. SUBTASK 72-60-10-040-053 Remove the Deoiler Casing (Pre SBE 79-0087, Pre SBE 79-0088, SBE 79-0087 and SBE 79-0088)

      SBE 79-0087: Oil - Scavenge oil tubes - Re-route of No.4 bearing scavenge tube

      SBE 79-0088: Oil - Scavenge oil tubes - Re-route of No.4 bearing scavenge tube

    1. Refer to Figure.

    2. Remove the three bolts and washers which attach the air port casing to the deoiler casing. Remove the air port casing and discard the packing. Use IAE 1F10067 Puller 1 off.

    3. Pre SBE 79-0087 or Pre SBE 79-0088: Remove the seven nuts and five washers which attach the deoiler casing to the gearbox casing. Remove the bracket Main Gearbox Assembly (72-60-10, 01-456).

    4. SBE 79-0087 or SBE 79-0088: Remove the seven nuts and four washers which attach the deoiler casing to the gearbox casing. Remove the bracket Main Gearbox Assembly (72-60-10, 01-457).

    5. Remove the deoiler casing from the gearbox casing and discard the two packings.

    4. SUBTASK 72-60-10-040-054 Remove the Deoiler Gear and Impeller

    1. Refer to Figure.

    2. Remove the mating ring from the deoiler gear and discard the packing. Use IAE 1F10069 Puller.

    3. Remove the two screws which attach the deoiler housing to the gearbox casing.

    4. Install three disassembly screws in to the inserts of the housing flange. Operate to disconnect the deoiler housing. Remove the disassembly screws.

    5. Remove the deoiler housing and the deoiler gear and impeller from the gearbox casing. Remove and discard the packing.

    6. Remove the three nuts which attach the outer race of the rear roller bearing to the gearbox casing.

    7. Remove the outer race from the gearbox casing. Use IAE 1F10158 Puller.

    5. SUBTASK 72-60-10-040-055 Remove the IDG Housing

    1. Refer to Figure and Figure.

    2. Remove the eight bolts and washers which attach the cover to the IDG housing. Remove the cover.

    3. Remove the nut, the retaining ring and the shaft plug from the end of the IDG drive gear.

    4. Remove the three screws and washers which attach the seal housing to the IDG housing.

    5. Install IAE 1F10010 Puller 1 off on the seal housing. Remove the seal housing and discard the packing.

    6. Install IAE 1F10009 Puller on the mating ring. Remove the mating ring and discard the packing.

    7. Remove the two screws which attach the IDG housing to the gearbox casing.

    8. Install three disassembly screws in to the inserts of the housing flange. Operate to disconnect the IDG housing. Remove the disassembly screws.

    9. Remove the IDG housing from the gearbox casing and from the IDG drive gear. Remove and discard the packings.

    6. SUBTASK 72-60-10-040-056 Remove the Starter Drive Housing

    1. Refer to Figure.

    2. Remove the three bolts and washers which attach the seal housing to the starter drive housing.

    3. Install IAE 1F10008 Puller on the seal housing. Remove the seal housing and discard the packing.

    4. Install IAE 1F10007 Puller on the mating ring. Remove the mating ring and discard the packing.

    5. Remove the eight bolts which attach the starter drive housing to the gearbox casing.

    6. Install three disassembly screws in to the inserts of the housing flange. Operate to disconnect the starter drive housing. Remove the disassembly screws.

    7. Remove the starter drive housing from the gearbox casing and from the starter drive gear. Remove and discard the packing.

    7. SUBTASK 72-60-10-040-057 Remove the IDG Drive Gear and the Starter Drive Gear

    1. Refer to Figure, Figure and Figure.

    2. Remove the IDG drive gear from the remaining outer race of the front roller bearing attached in the gearbox casing. Move the starter drive gear to make the removal easier.

    3. Remove the three nuts which attach the outer race of the front roller bearing in the gearbox casing.

    4. Remove the outer race from the gearbox casing. Use IAE 1F10158 Puller.

    5. Remove the starter drive gear from the remaining outer race of the rear roller bearing attached to the gearbox casing.

    6. Remove the three nuts which attach the outer race of the rear roller bearing and the shroud to the gearbox casing.

    7. Remove the shroud and the outer race from the gearbox casing. Use the IAE 1F10158 Puller.

    8. SUBTASK 72-60-10-040-058 Remove the Angle Gearbox Support

    1. Refer to Figure and Figure.

    2. Remove the transportation plug, if installed, from the strainer suction.

    3. Remove the nut which attach the strainer suction to the angle gearbox support.

    4. Remove the strainer suction from the seat on the angle gearbox support. Discard the three packings.

    5. Remove the nuts, the bolt, and the washers which attach the angle gearbox support to the gearbox casing. Remove the three brackets.

    6. Install three disassembly screws in to the inserts on the flange of the angle gearbox support. Operate to disconnect the angle gearbox support. Remove the disassembly screws.

    7. Carefully remove the angle gearbox support from the gearbox casing and from the roller bearings of the oil scavenge pump drive gear and the starter idler gear. Remove the packings.

    9. SUBTASK 72-60-10-040-059 Remove the Starter Idler Gear

    1. Refer to Figure.

    2. Remove the starter idler gear from the remaining outer race of the front roller bearing attached in the gearbox casing.

    3. Remove the three nuts which attach the outer race of the front roller bearing in the gearbox casing.

    4. Remove the outer race from the gearbox casing. Use IAE 1F10158 Puller.

    10. SUBTASK 72-60-10-040-060 Remove the Layshaft Extension Gear

    1. Refer to Figure.

    2. Remove the two nuts and washers. Remove the PMA housing with the outer race of the front roller bearing from the gearbox casing. Use IAE 1F10365 Puller. Remove and discard the packing.

    3. Remove the gearshaft from the outer race of the rear roller bearing installed in the gearbox casing.

    4. Release and remove the three bolts and keywashers which attach the outer race of the rear roller bearing in the gearbox casing. Discard the keywashers.

    5. Remove the outer race from the gearbox casing. Use IAE 1F10159 Puller.

    11. SUBTASK 72-60-10-040-061 Remove the Oil Scavenge Pump Drive Gear

    1. Refer to Figure.

    2. Remove the oil scavenge pump drive gear from the remaining outer race of the front roller bearing attached in the gearbox casing.

    3. Remove the three nuts which attach the outer race of the front roller bearing in the gearbox casing.

    4. Remove the outer race from the gearbox casing. Use IAE 1F10158 Puller.

    12. SUBTASK 72-60-10-040-062 Remove the Fuel Pump Drive Gear

    1. Refer to Figure.

    2. Remove the three bolts which attach the seal housing to the housing.

    3. Install IAE 1F10008 Puller on the seal housing. Remove the seal housing and discard the packing.

    4. Install IAE 1F10007 Puller on the mating ring. Remove the mating ring and discard the packing.

    5. Remove the two screws which attach the housing to the gearbox casing.

    6. Install three disassembly screws in to the inserts of the housing flange. Operate to disconnect the housing. Remove the disassembly screws.

    7. Remove the housing and the fuel pump drive gear from the remaining outer race of the front roller bearing attached in the gearbox casing.

    8. Remove the three nuts which attach the outer race of the front roller bearing in the gearbox casing.

    9. Remove the outer race from the gearbox casing. Use IAE 1F10158 Puller.

    13. SUBTASK 72-60-10-040-063 Remove the Hydraulic Pump Drive Gear

    1. Refer to Figure and Figure.

    2. Remove the four nuts and washers which attach the cover to the hydraulic pump housing. Remove the cover.

    3. Remove the plug, the retaining ring and the shaft plug from the end of the hydraulic pump gear drive.

    4. Remove the three bolts and washers which attach the seal housing to the hydraulic pump housing.

    5. Install IAE 1F10008 Puller on the seal housing. Remove the seal housing and discard the packing.

    6. Install IAE 1F10007 Puller on the mating ring. Remove the mating ring and discard the packing.

    7. Remove the two bolts which attach the hydraulic pump housing to the gearbox casing.

    8. Install three disassembly screws in to the inserts of the housing flange. Operate to disconnect the hydraulic pump housing. Remove the disassembly screws.

    9. Remove the hydraulic pump housing from the gearbox casing and from the hydraulic pump drive gear. Remove and discard the packings.

    10. Remove the three nuts which attach the shroud and the outer race of the roller bearing in the gearbox casing.

    11. Remove the hydraulic pump drive gear and the shroud from the remaining outer race of the roller bearing attached in the gearbox casing.

    12. Remove the outer race from the gearbox casing. Use IAE 1F10158 Puller.

    14. SUBTASK 72-60-10-040-064 Remove the Oil Nozzles from the Rear Side of the Main Gearbox

    1. Refer to Figure.

    2. Remove the nut and the washer which attach the oil nozzle to the gearbox casing. Remove the oil nozzle from the seal below the mounting flange of the fuel pump. Remove and discard the packings.

    3. Remove the nut and the washer which attach the oil nozzle to the gearbox casing. Remove the oil nozzle from the seat below the mounting flange of the integrated drive generator system. Remove and discard the packings.

    15. SUBTASK 72-60-10-040-065 Remove the Oil Nozzles from the Front Left-hand Side of the Main Gearbox

    1. Refer to Figure.

    2. Remove the nut and the washer which attach the oil nozzle to the gearbox casing. Remove the oil nozzle from the seat adjacent to the mounting flange of the deoiler casing. Remove and discard the packings.

    3. Remove the nut and the washer which attach the oil nozzle to the gearbox casing. Remove the oil nozzle from the seat above the mounting flange of the starter drive. Remove and discard the packings.

    4. Remove the nut and the washer which attach the oil nozzle to the gearbox casing. Remove the oil nozzle from the seat above the mounting flange of the PMA housing. Remove and discard the packings.

    16. SUBTASK 72-60-10-040-066 Remove the Oil Nozzles from the Front Right-hand Side of the Main Gearbox

    1. Refer to Figure.

    2. Remove the nut and the washer which attach the oil nozzle to the gearbox casing. Remove the oil nozzle from the seat below the mounting flange of the PMA housing. Remove and discard the packings.

    3. Remove the nut and the washer which attach the oil nozzle to the gearbox casing. Remove the oil nozzle from the seat on the left hand of the mounting flange of the hydraulic pump. Use IAE 1F10364 Puller. Remove and discard the packings.

    4. Remove the nut and the washer which attach the oil nozzle to the gearbox casing. Remove the oil nozzle from the seat adjacent to the mounting flange of the oil pressure pump. Remove and discard the packings.

    17. Figure: Remove the crank cover

    Remove the crank cover

    Figure: Remove the PMA gear drive

    Remove the PMA gear drive

    Figure: Remove the Deoiler Casing

    Remove the Deoiler Casing

    Figure: Remove the deoiler gear and impeller

    Remove the deoiler gear and impeller

    Figure: Remove the IDG drive gear

    Sheet 1

    Legend
    Remove the IDG drive gear

    Sheet 1

    Close

    Figure: Remove the IDG drive gear

    Sheet 2

    Legend
    Remove the IDG drive gear

    Sheet 2

    Close

    Figure: Remove the starter drive gear

    Remove the starter drive gear

    Figure: Remove the angle gearbox support

    Sheet 1

    Legend
    Remove the angle gearbox support

    Sheet 1

    Close

    Figure: Remove the angle gearbox support

    Sheet 2

    Legend
    Remove the angle gearbox support

    Sheet 2

    Close

    Figure: Remove the starter idler gear

    Remove the starter idler gear

    Figure: Remove the layshaft extension gear

    Remove the layshaft extension gear

    Figure: Remove the oil scavenge pump drive gear

    Remove the oil scavenge pump drive gear

    Figure: Remove the fuel pump drive gear

    Remove the fuel pump drive gear

    Figure: Remove the hydraulic pump drive gear

    Sheet 1

    Legend
    Remove the hydraulic pump drive gear

    Sheet 1

    Close

    Figure: Remove the hydraulic pump drive gear

    Sheet 2

    Legend
    Remove the hydraulic pump drive gear

    Sheet 2

    Close

    Figure: Oil nozzle on the rear side of the main gearbox

    Oil nozzle on the rear side of the main gearbox

    Figure: Oil nozzles on the front left-hand side of the main gearbox

    Oil nozzles on the front left-hand side of the main gearbox

    Figure: Oil nozzles on the front right-hand side of the main gearbox

    Oil nozzles on the front right-hand side of the main gearbox

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised the procedural step. (20VC536)

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:X222X
Enterprise Name:N/A – REFER TO APPLICABLE COMAT SUFFIX
Manufacturer Code:X222X
Supply Number:CoMat 10-058
Type:sp01
Supply Short Name:CoMat 10-058 PENETRATING OIL
Supply Name:CoMat 10-058 PENETRATING OIL
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:0AM53
Tool Number:IAE 1F10007
Tool Name:IAE 1F10007 Puller
Manufacturer Code:0AM53
Tool Number:IAE 1F10008
Tool Name:IAE 1F10008 Puller
Manufacturer Code:0AM53
Tool Number:IAE 1F10009
Tool Name:IAE 1F10009 Puller
Manufacturer Code:0AM53
Tool Number:IAE 1F10010
Tool Name:IAE 1F10010 Puller
Manufacturer Code:0AM53
Tool Number:IAE 1F10067
Tool Name:IAE 1F10067 Puller
Manufacturer Code:0AM53
Tool Number:IAE 1F10069
Tool Name:IAE 1F10069 Puller
Manufacturer Code:0AM53
Tool Number:IAE 1F10154
Tool Name:IAE 1F10154 Build stand
Link not Found
Manufacturer Code:0AM53
Tool Number:IAE 1F10159
Tool Name:IAE 1F10159 Puller
Manufacturer Code:0AM53
Tool Number:IAE 1F10230
Tool Name:IAE 1F10230 Drift, installation
Manufacturer Code:0AM53
Tool Number:IAE 1F10364
Tool Name:IAE 1F10364 Puller
Manufacturer Code:0AM53
Tool Number:IAE 1F10365
Tool Name:IAE 1F10365 Puller
Manufacturer Code:0AM53
Tool Number:IAE 5F10048
Tool Name:IAE 5F10048 Gearbox handling adapter