TASK 72-40-00-030-004 HP System Module - Remove The No. 4 Bearing And Rear Compartment Parts, Disassembly-004

DMC:V2500-A0-72-40-0000-06A-530A-B|Issue No:002.00|Issue Date:2021-02-01

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 72-40-00-030-004 HP System Module - Remove The No. 4 Bearing And Rear Compartment Parts, Disassembly-004

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.

Remove the No. 4 bearing and rear compartment parts with the HP system module installed in the workshop stand. The procedure for the installation of the HP system module in to the stand is given in TASK 72-00-40-020-002 (REMOVAL-002, CONFIG-001 and CONFIG-002) or TASK 72-00-40-560-003 (REMOVAL-008).

Remove and discard the lockwire before parts are disconnected or removed.

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

NOTE

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

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
IAE 1F10018 Hydraulic hand pump0AM53IAE 1F100181
IAE 1F10026 Hydraulic hand pump0AM53IAE 1F100261
IAE 1P16035 Hand wrench0AM53IAE 1P160351
IAE 1P16036 Pusher/puller0AM53IAE 1P160361
IAE 1P16072 Jaw set0AM53IAE 1P160721
IAE 1P16104 Cover0AM53IAE 1P161041
IAE 1P16129 Fixture0AM53IAE 1P161291

(Pre SBE 72-0190)

IAE 1P16132 Jaw set0AM53IAE 1P161321

(Pre SBE 72-0097)

IAE 1P16133 Puller0AM53IAE 1P161331
IAE 1P16134 Jaw set0AM53IAE 1P161341
IAE 1P16135 Jaw set0AM53IAE 1P161351
IAE 1P16136 Puller0AM53IAE 1P161361
IAE 1P16351 Jaw assembly0AM53IAE 1P163511

(SBE 72-0097 and Pre SBE 72-0190)

IAE 1P16387 Puller0AM53IAE 1P163871

(SBE 72-0190)

IAE 1P17511 cover0AM53IAE 1P175111

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-40-00-030-071 Remove the Stage 1 Turbine Nozzle Assembly

    1. Remove the stage 1 turbine nozzle assembly. Refer to TASK 72-00-44-020-001-001 (REMOVAL-001) or TASK 72-40-00-030-002 (DISASSEMBLY-002).

    2. SUBTASK 72-40-00-030-072-A00 Remove the No. 4 Bearing Heatshield, (Pre SBE 72-0190)

    1. Refer to Figure and Figure.

    2. Remove the cover from the rear flange of the diffuser case.

    3. Remove the nuts and the keywashers that attach the No. 4 bearing heatshield to the studs on the cooling duct. Discard the keywashers.

      4. Install the IAE 1P16129 Fixture 1 off to the flange of the No. 4 bearing support.

      1. Loosen the bolts which hold the jaws to the ring.

      2. Install the fixture on to the No. 4 bearing support flange. Turn the fixture to align the bolt holes. The dowel pin on the flange locates in an opening between the legs of the fixture.

      3. Loosen the puller jackbolts to lower the jaws until the ring touches the top face of the fixture base.

      4. Move the jaws in to engage the jaws with the puller lip on the No. 4 bearing rear heatshield.

      5. Install the large ring over the jaws until the ring touches the top face of the fixture base.

      6. Tighten the bolts which hold the jaws to the fixture ring.

      7. Tighten the puller jackbolts equally to release the heatshield.

      8. Release the bolts which hold the jaws to the fixture ring.

      9. Remove the large ring from the jaws.

      10. Move the jaws out to disengage the jaws from the heatshield.

      11. Remove the bolts which hold the fixture to the support flange. Remove the fixture from the engine.

    5. Remove the No. 4 bearing heatshield from the engine.

    3. SUBTASK 72-40-00-030-072-B00 Remove the No. 4 Bearing Heatshield, (SBE 72-0190)

    1. Refer to Figure and Figure.

    2. Remove the cover from the rear flange of the diffuser case.

    3. Remove the nuts and the keywashers that attach the No. 4 bearing heatshield to the studs on the cooling duct. Discard the keywashers.

      4. Install the IAE 1P16387 Puller 1 off to the flange of the No. 4 bearing support.

      1. Loosen the bolts which hold the jaws to the ring.

      2. Install the puller onto the No. 4 bearing support flange. Turn the puller to align the bolt holes. The dowel pin on the flange locates in an opening between the legs of the puller.

      3. Loosen the puller jackbolts to lower the jaws until the ring touches the top face of the base.

      4. Move the jaws in to engage the jaws with the puller lip on the No. 4 bearing heatshield.

      5. Install the large ring over the jaws until the ring touches the top face of the base.

      6. Tighten the bolts which hold the jaws to the ring.

      7. Tighten the jackbolts equally to release the heatshield.

      8. Release the bolts which hold the jaws to the ring.

      9. Remove the large ring from the jaws.

      10. Move the jaws out to disengage the jaws from the heatshield.

      11. Remove the bolts which hold the puller to the bearing support flange. Remove the puller from the engine.

    5. Remove the No. 4 bearing heatshield from the engine.

    4. SUBTASK 72-40-00-030-073-A00 Remove the No. 4 Bearing Rear Cooling Duct, (Pre SBE 72-0097 and Pre SBE 72-0190)

    1. Refer to Figure and Figure.

    2. Remove the nuts and the keywashers that attach the No. 4 bearing rear cooling duct to the studs on the No. 4 bearing rear seal assembly. Discard the keywashers.

      3. Install the IAE 1P16129 Fixture 1 off to the flange of the No. 4 bearing support.

      1. Loosen the bolts which hold the jaws to the ring.

      2. Install the fixture on to the No. 4 bearing support flange. Turn the fixture to align the bolt holes. The dowel pin on the flange locates in an opening between the legs of the fixture.

      3. Loosen the puller jackbolts to lower the jaws until the ring touches the top face of the fixture base.

      4. Move the jaws in to engage the jaws with the puller lip on the No. 4 bearing rear cooling duct.

      5. Install the large ring over the jaws until the ring touches the fixture base.

      6. Tighten the bolts which hold the jaws to the fixture ring.

      4. Install the IAE 1P16132 Jaw set 1 off.

      1. Attach the jaw set to the ring with bolts. Bolts must stay loose.

      2. Install the ring and jaw set over the HPC hub and lower on to the puller fixture (which was installed before) until the ring touches the fixture face.

      3. Engage the pin on each jaw in to holes in the ID of the No. 4 bearing cooling duct.

      4. Install the retaining ring in to the ring and jaw set. Tighten the bolts which hold the jaw to the ring.

      5. Tighten the four puller jackbolts on the puller fixture and the four puller jackbolts on the jaw set equally to release the cooling air duct.

      5. Remove the jaw set and the puller fixture from the engine.

      1. Release the bolts which hold the jaws to the ring on the IAE 1P16132 Jaw set 1 off.

      2. Remove the retaining ring from the center of the jaw set.

      3. Move the jaws in to disengage the pins from the ID of the cooling duct. Remove the jaw and ring assembly from the engine.

      4. Release the bolts which hold the jaws to the IAE 1P16129 Fixture 1 off.

      5. Remove the large ring from the OD of the jaws.

      6. Move the jaws of the fixture out to disengage the jaws from the cooling duct.

      7. Remove the bolts which hold the fixture to the bearing support flange. Remove the fixture from the engine.

    6. Remove the No. 4 bearing cooling duct from the engine.

    5. SUBTASK 72-40-00-030-073-B00 Remove the No. 4 Bearing Rear Cooling Duct, (SBE 72-0097 and Pre SBE 72-0190)

    1. Refer to Figure and Figure.

    2. Remove the nuts and the keywashers that attach the No. 4 bearing rear cooling duct to the studs on the No. 4 bearing rear seal assembly. Discard the keywashers.

      3. Install the IAE 1P16129 Fixture 1 off to the flange of the No. 4 bearing support.

      1. Loosen the bolts which hold the jaws to the ring.

      2. Install the fixture onto the No. 4 bearing support flange. Turn the fixture to align the bolt holes. The dowel pin on the flange locates in an opening between the legs of the fixture.

      3. Loosen the puller jackbolts to lower the jaws until the ring touches the top face of the fixture base.

      4. Move the jaws in to engage the jaws with the puller lip on the No. 4 bearing rear cooling duct.

      5. Install the large ring over the jaws until the ring touches the fixture base.

      6. Tighten the bolts which hold the jaws to the fixture ring.

      4. Install the IAE 1P16351 Jaw assembly 1 off.

      1. Attach the jaw assembly to the ring with bolts. The bolts must stay loose.

      2. Install the ring and jaw assembly over the HPC hub and lower the ring onto the puller fixture (which was installed before) until the ring touches the fixture base.

      3. Engage the pin on each jaw into the holes in the ID of the cooling duct.

      4. Install the retaining ring into the ring and jaw assembly. Tighten the bolts which hold the jaw to the ring.

      5. Tighten the four puller jackbolts on the puller fixture and the four puller jackbolts on the jaw assembly equally to release the cooling duct.

      5. Remove the jaw assembly and the puller fixture from the engine.

      1. Release the bolts which hold the jaws to the ring on the IAE 1P16351 Jaw assembly.

      2. Remove the retaining ring from the center of the jaw assembly.

      3. Move the jaws in to disengage the pins from the ID of the cooling duct.

      4. Release the bolts which hold the jaws to the IAE 1P16129 Fixture.

      5. Remove the large ring from the OD of the jaws.

      6. Move the jaws of the fixture out to disengage the jaws from the cooling duct.

      7. Remove the bolts which hold the fixture to the bearing support flange. Remove the fixture from the engine.

    6. Remove the No. 4 bearing rear cooling duct from the engine.

    6. SUBTASK 72-40-00-030-073-C00 Remove the No. 4 Bearing Rear Cooling Duct, (SBE 72-0190)

    1. Refer to Figure and Figure.

    2. Remove the nuts and the keywashers that attach the No. 4 bearing rear cooling duct to the studs on the No. 4 bearing rear seal assembly. Discard the keywashers.

      3. Install the IAE 1P16387 Puller 1 off to the flange of the No. 4 bearing support.

      1. Loosen the bolts which hold the jaws to the ring.

      2. Install the puller onto the No. 4 bearing support flange. Turn the puller to align the bolt holes. The dowel pin on the flange locates in an opening between the legs of the puller.

      3. Loosen the puller jackbolts to lower the jaws until the ring touches the top face of the puller.

      4. Move the jaws in to engage the jaws with the puller lip on the No. 4 bearing rear cooling duct.

      5. Install the large ring over the jaws until the ring touches the puller.

      6. Tighten the bolts which hold the jaws to the ring.

      7. Engage the pin on each jaw into the holes in the ID of the cooling duct.

      8. Tighten the bolts which hold the jaw to the ring.

      9. Tighten the jackbolts equally to release the cooling duct.

      4. Remove the puller from the engine.

      1. Release the bolts which hold the jaws to the ring on the IAE 1P16387 Puller.

      2. Remove the retaining ring from the center of the puller.

      3. Move the jaws in to disengage the pins from the ID of the cooling duct.

      4. Remove the large ring from the OD of the jaws.

      5. Move the jaws of the puller out to disengage the jaws from the cooling duct.

      6. Remove the bolts which hold the puller to the bearing support flange. Remove the puller from the engine.

    5. Remove the No. 4 bearing rear cooling duct from the engine.

    7. SUBTASK 72-40-00-030-074 Remove the No. 4 Bearing Rear Seal Assembly

    1. Refer to Figure.

    2. Remove the bolts which attach the No. 4 bearing rear seal assembly (01-020) to the No. 4 bearing support flange.

    3. Remove the seven spacer assemblies from the flange of the No. 4 bearing rear seal assembly.

    4. Install the tool bolts to the jackscrew holes in the flange of the rear seal.

    5. Turn the tool bolts in equally to release the No. 4 bearing rear seal from the No. 4 bearing support.

    6. Remove the rear seal assembly from the engine. Remove the tool bolts from the rear seal flange.

    7. Remove the gasket from the flange of the rear seal. Discard the gasket.

    8. Install the IAE 1P16104 Cover 1 off to the No. 4 bearing support.

    8. SUBTASK 72-40-00-030-075 Remove the No. 4 Bearing Rear Seal Seat

    1. Refer to Figure.

    2. Install the IAE 1P16133 Puller 1 off to the HPC rear hub.

    3. Install the IAE 1P16135 Jaw set 1 off to the puller with the lip on the jaws on the front face of the No. 4 bearing rear seal seat. Install the puller ring over the jaws until seated. Tighten the bolts on the jaws.

    4. Attach the IAE 1F10026 Hydraulic hand pump 1 off to the puller and operate to release the rear seal set.

    5. Remove the puller and the seal seat from the engine. Remove the seal seat from the puller.

    6. Remove the gasket from the seal seat.

    9. SUBTASK 72-40-00-030-076 Remove the No. 4 Bearing Inner Race

      CAUTION

      SLOWLY ROTATE THE HPC DURING REMOVAL OF THE INNER RACE TO PREVENT DAMAGE TO THE BEARING.

    1. Refer to Figure.

    2. Deleted.

    3. Deleted.

    4. Install the IAE 1P16133 Puller 1 off on to the HPC rear hub.

    5. Attach the IAE 1P16134 Jaw set 1 off to the puller with the lip on the jaws in the groove on the No. 4 bearing inner race.

    6. Install the ring over the jaws until seated. Tighten the bolts on the jaws to secure.

    7. Attach the IAE 1F10026 Hydraulic hand pump 1 off to the puller and operate to release the No. 4 bearing inner race.

    8. Remove the pump from the puller. Remove the ring from the jaws. Release the bolts which secure the jaws and remove the puller from the engine.

    9. NOTE

      The No. 4 bearing inner and outer race and rollers are a serialized set that must be kept together as a set in each engine build.

      Remove the No. 4 bearing inner race.

    10. SUBTASK 72-40-00-030-077 Remove the No. 4 Bearing Seal Spacer

    1. Refer to Figure.

    2. Remove the knurled head screws or the hand knobs from the jaws of the IAE 1P16136 Puller 1 off and put in to storage position on the jackscrew plate.

    3. Slide the jaws of the puller out. Hand tighten the screws to keep the jaws out.

    4. Rotate the puck (with pins) to align the dowel pins under the arms of the jackscrew plate. Turn the jackbolt until the dowel pins touch the jackscrew plate.

    5. Install the puller over the HPC rear hub and put the center puck on the hub end face.

    6. Slide the jaws radially in to the stop. Hand tighten the screws.

    7. Remove the hand knobs from the storage position and install to the studs on the side of the jaws. Tighten the hand knobs to clamp the jaws to the spacer.

    8. Turn the jackbolt to release the spacer from the HPC rear hub.

    9. Remove the puller and the spacer from the engine.

    10. Remove the spacer from the puller.

    11. SUBTASK 72-40-00-030-078 Remove the No. 4 Bearing Front Seal Seat

    1. Refer to Figure.

    2. Remove the knurled head screws or hand knobs from the jaws of the IAE 1P16136 Puller 1 off and put in to storage position on the jackscrew plate.

    3. Slide the jaws of the puller in. Tighten the screws by hand to keep the jaws in.

    4. Rotate the puck (with pins) to align the dowel pins between the arms of the jackscrew plate. Turn the jackbolt until the puck touches the jackscrew plate.

    5. Install the puller over the HPC rear hub and put the center puck on the hub end face.

    6. Slide the jaws radially out to the stop. Tighten the screws by hand.

    7. Remove the knurled head screws from the storage position and install to the threaded holes on the jaws. Turn the screws in to clamp the groove in the jaws over the lip on the seal seat.

    8. Turn the jackbolt to release the seal seat from the HPC rear hub.

    9. Remove the puller and the seal seat from the HPC rear hub.

    10. Remove the seal seat from the puller.

    11. Install the IAE 1P17511 cover 1 off over the rear flange of the engine and secure with hand pressure at the outer edge.

    12. SUBTASK 72-40-00-030-079 Remove the No. 4 Bearing Outer Race,

    1. Refer to Figure and Figure.

    2. Release the lock feature on the No. 4 bearing outer race retaining nut lock.

    3. Install the IAE 1P16035 Hand wrench 1 off over the HPC rear hub and align the wrench keys with the slots in the No. 4 bearing retaining nut. Loosen the nut with a standard handle in the wrench or tap with a mallet. Remove the wrench from the engine. Remove the bearing retaining nut and the retaining nut lock from the engine. Discard the keywasher.

    4. Install the IAE 1P16072 Jaw set 1 off on to the IAE 1P16036 Pusher/puller 1 off with the shoulder screws and springs. The springs are put between the jaws and the puller to load the jaws in.

    5. CAUTION

      DO NOT LET THE JAWS DRAG ACROSS THE BEARING RACE. DAMAGE TO THE BEARING MAY RESULT.

      Install the inner support with the jaws and the threaded rod over the HPC shaft. Lower until the jaws contact the end of the outer race. Slide the aluminum ring down to push the jaws outward with the two eyebolt rods. When light touch is felt, rotate the tool until the jaws engage the slots in the bearing support. When the tool is properly engaged, it will not turn. Continue to push the jaws out with the two eyebolt rods until seated.

    6. NOTE

      Align the dowel pin hole in the tool with the dowel pin on the bearing support flange.

      Install the hydraulic cylinder with the threaded end in to the outer tube. Lift the outer tube with a standard three-point sling and hoist. Install the outer tube over the inner support tube assembly against the No. 4 bearing support outer flange rear face.

    7. Secure the tool to the inner flange of the diffuser case with the tool bolts. Install the flanged nut to the threaded center rod.

    8. Attach the IAE 1F10018 Hydraulic hand pump 1 off to the puller and release the No. 4 bearing outer race from the support.

    9. Remove the bolts which hold the tool to the inner flange of the diffuser case. Use a standard three-point sling to lift the tool and the bearing outer race from the engine and put on bench.

    10. NOTE

      The No. 4 bearing inner and outer race and rollers are a serialized set that must be kept together as a set in each engine build.

      Retract the aluminum ring and remove the bearing race from the tool.

    13. Figure: No. 4 Bearing Rear Cooling Duct and Heatshield

    No. 4 Bearing Rear Cooling Duct and Heatshield

    Figure: Pre SBE 72-0190 Remove the No. 4 Bearing Heatshield

    Sheet 1

    Legend
    Pre SBE 72-0190 Remove the No. 4 Bearing Heatshield

    Sheet 1

    Close

    Figure: SBE 72-0190 Remove the No. 4 Bearing Heatshield

    Sheet 2

    Legend
    SBE 72-0190 Remove the No. 4 Bearing Heatshield

    Sheet 2

    Close

    Figure: Pre SBE 72-0097 and Pre SBE 72-0190 Remove the No. 4 Bearing Rear Cooling Duct

    Sheet 1

    Legend
    Pre SBE 72-0097 and Pre SBE 72-0190 Remove the No. 4 Bearing Rear Cooling Duct

    Sheet 1

    Close

    Figure: SBE 72-0097 and Pre SBE 72-0190 Remove the No. 4 Bearing Rear Cooling Duct

    Sheet 2

    Legend
    SBE 72-0097 and Pre SBE 72-0190 Remove the No. 4 Bearing Rear Cooling Duct

    Sheet 2

    Close

    Figure: SBE 72-0190 Remove the No. 4 Bearing Rear Cooling Duct

    Sheet 3

    Legend
    SBE 72-0190 Remove the No. 4 Bearing Rear Cooling Duct

    Sheet 3

    Close

    Figure: Remove the No. 4 Bearing Rear Seal Assembly

    Remove the No. 4 Bearing Rear Seal Assembly

    Figure: Remove the No. 4 Bearing Rear Seal Seat

    Remove the No. 4 Bearing Rear Seal Seat

    Figure: Remove the No. 4 Bearing Inner Race

    Remove the No. 4 Bearing Inner Race

    Figure: Remove the No. 4 Bearing Seal Spacer

    Remove the No. 4 Bearing Seal Spacer

    Figure: Remove the No. 4 Bearing Front Seal Seat

    Remove the No. 4 Bearing Front Seal Seat

    Figure: Remove the No. 4 Bearing Retaining Nut

    Remove the No. 4 Bearing Retaining Nut

    Figure: Remove the No. 4 Bearing Outer Race

    Remove the No. 4 Bearing Outer Race

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Deleted support equipment tools IAE 1P16041, IAE 1P16469 and IAE 6F10027, procedural steps and relocated caution. (18VC233)

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:0AM53
Tool Number:IAE 1F10018
Tool Name:IAE 1F10018 Hydraulic hand pump
Manufacturer Code:0AM53
Tool Number:IAE 1F10026
Tool Name:IAE 1F10026 Hydraulic hand pump
Manufacturer Code:0AM53
Tool Number:IAE 1P16035
Tool Name:IAE 1P16035 Hand wrench
Manufacturer Code:0AM53
Tool Number:IAE 1P16036
Tool Name:IAE 1P16036 Pusher/puller
Manufacturer Code:0AM53
Tool Number:IAE 1P16072
Tool Name:IAE 1P16072 Jaw set
Manufacturer Code:0AM53
Tool Number:IAE 1P16104
Tool Name:IAE 1P16104 Cover
Manufacturer Code:0AM53
Tool Number:IAE 1P16129
Tool Name:IAE 1P16129 Fixture
Manufacturer Code:0AM53
Tool Number:IAE 1P16132
Tool Name:IAE 1P16132 Jaw set
Manufacturer Code:0AM53
Tool Number:IAE 1P16133
Tool Name:IAE 1P16133 Puller
Manufacturer Code:0AM53
Tool Number:IAE 1P16134
Tool Name:IAE 1P16134 Jaw set
Manufacturer Code:0AM53
Tool Number:IAE 1P16135
Tool Name:IAE 1P16135 Jaw set
Manufacturer Code:0AM53
Tool Number:IAE 1P16136
Tool Name:IAE 1P16136 Puller
Manufacturer Code:0AM53
Tool Number:IAE 1P16351
Tool Name:IAE 1P16351 Jaw assembly
Manufacturer Code:0AM53
Tool Number:IAE 1P16387
Tool Name:IAE 1P16387 Puller
Manufacturer Code:0AM53
Tool Number:IAE 1P17511
Tool Name:IAE 1P17511 cover