TASK 72-42-30-040-001 No. 4 Bearing Compartment Assembly - Disassemble, Disassembly-001

DMC:V2500-A0-72-42-3000-00A-530A-B|Issue No:003.00|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 72-42-30-040-001 No. 4 Bearing Compartment Assembly - Disassemble, 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.

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.

Refer to TASK 72-42-00-990-501 (DESCRIPTION AND OPERATION) for a sectional view of the No. 4 bearing front compartment.

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 1F10026 Hydraulic hand pump0AM53IAE 1F100261
IAE 1P16389 Holding base0AM53IAE 1P163891
IAE 1P16045 cover0AM53IAE 1P160452
IAE 1P16068 Support fixture0AM53IAE 1P16068
IAE 1P16069 Wrench0AM53IAE 1P160691
IAE 1P16107 cover0AM53IAE 1P16107
IAE 1P16108 cover0AM53IAE 1P16108
IAE 1P16390 Removal/installation drift0AM53IAE 1P163901

Consumables, Materials and Expendables

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

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-42-30-040-051 Remove the Cover from the No. 4 Bearing Support

    1. Remove the IAE 1P16107 cover 1 off from the No. 4 bearing support.

    2. SUBTASK 72-42-30-040-052 Attach the No. 4 Bearing Front Compartment to the Support Fixture

    1. Attach the No. 4 bearing front compartment to the IAE 1P16068 Support fixture with the four work bolts.

    3. SUBTASK 72-42-30-040-053 Remove the No. 4 Bearing Outer Race Retaining Nut

      NOTE

      The No. 4 bearing outer race may have been removed. Refer to TASK 72-00-43-020-001 (REMOVAL).

    1. Refer to: Figure

    2. Release the lock feature of the No. 4 bearing key washer.

    3. Install the IAE 1P16069 Wrench 1 off and align the wrench keys with the slots in the No. 4 bearing retaining nut.

    4. Hit the handle of the wrench to loosen the nut. Remove the wrench from the nut. Remove the retaining nut and the key washer nut lock from the bearing support. Discard the key washer.

    5. Remove the work bolts that attach the bearing support to the support fixture.

    6. Remove the bearing support from the fixture.

    4. SUBTASK 72-42-30-040-054 Remove the No. 4 Bearing Outer Race

    1. Refer to Figure.

    2. Deleted.

    3. Deleted.

    4. Rotate the front support, large OD down. Install the front support into the IAE 1P16389 Holding base 1 off.

    5. Install the IAE 1P16390 Removal/installation drift 1 off onto the front support with the three pads that locate in the three scallops of the front support and the bearing outer race.

    6. With the drift and a standard arbor press, drift the outer race from the front support.

    5. SUBTASK 72-42-30-040-055 Remove the No. 4 Bearing Support from the No. 4 Bearing Front Seal Assembly

    1. Refer to: Figure

    2. Remove the IAE 1P16108 cover 1 off from the front of the No. 4 bearing cooling duct.

    3. Put the bearing support and front seal on a work bench.

    4. Make sure the eight washers which hold the nuts that attach the No. 4 bearing heatshield to the No. 4 bearing cooling duct are flat.

    5. Remove the 8 nuts and the eight washers (01-160) which attach the No. 4 bearing heatshield to the No. 4 bearing front cooling duct.

    6. Remove the heatshield from the cooling duct.

    7. Make sure the seven washers which hold the nuts that attach the No. 4 bearing front cooling duct are flat. Remove the seven nuts and the washers which attach the No. 4 bearing front cooling duct to the No. 4 bearing front seal assembly.

    8. Remove the four spacers which attach the cooling duct to the front seal assembly.

    9. Remove the front cooling duct from the front seal assembly.

    10. Remove the seven spacer assemblies.

    11. Install the jackscrews in the spacer holes.

    12. Turn the jackscrews in until the front seal assembly disengages from the No. 4 bearing support. Remove the jackscrews.

    13. Put the No. 4 bearing front seal assembly on the work bench and remove the gasket from the No. 4 bearing support.

    14. Install the IAE 1P16045 cover 1 off on the No. 4 bearing front seal assembly.

    6. SUBTASK 72-42-30-040-056 Remove the No. 4 Bearing Oil Nozzle from the No. 4 Bearing Front Seal Assembly - Pre SB 72-0629

    1. Refer to: Figure

    2. Make sure the washers which hold the bolts that attach the oil nozzle to the front seal assembly are flat.

    3. Remove the bolts and the washers that attach the oil nozzle to the front seal assembly.

    4. Remove the oil nozzle and the gasket (01-010) 1 off from the front seal assembly. Discard the gasket (01-010).

    5. Install the IAE 1P16045 cover 1 off to protect the carbon seal.

    7. SUBTASK 72-42-30-040-057 Remove the No.4 Bearing Oil Nozzle from the No.4 Bearing Front Seal Assembly - Post SB 72-0629

    1. Refer to Figure.

    2. Remove the bolts and the washers that attach the oil nozzle to the front seal assembly.

    3. Remove the oil nozzle and the gasket (01-010) 1 off from the front seal assembly. Discard the gasket (01-010).

    4. Install the IAE 1P16045 cover 1 off to protect the carbon seal.

    8. Figure: Remove the No. 4 Bearing Outer Race Retaining Nut

    Remove the No. 4 Bearing Outer Race Retaining Nut

    Figure: Remove the No. 4 Bearing Outer Race

    Remove the No. 4 Bearing Outer Race

    Figure: Remove the No. 4 Bearing Support from the No. 4 Bearing Front Seal Assembly

    Remove the No. 4 Bearing Support from the No. 4 Bearing Front Seal Assembly

    Figure: Remove the No. 4 Bearing Front Compartment (Pre SB 72-0629)

    Remove the No. 4 Bearing Front Compartment (Pre SB 72-0629)

    Figure: Remove the No.4 Bearing Oil Nozzle in the No.4 Front Bearing Seal Assembly (Post SB 72-0629)

    Remove the No.4 Bearing Oil Nozzle in the No.4 Front Bearing Seal Assembly (Post SB 72-0629)

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Deleted support equipment tools IAE 1F10027, IAE 1P16041, IAE 1P16469 and IAE 6F10027 and procedural steps. (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: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 1F10026
Tool Name:IAE 1F10026 Hydraulic hand pump
Manufacturer Code:0AM53
Tool Number:IAE 1P16045
Tool Name:IAE 1P16045 cover
Manufacturer Code:0AM53
Tool Number:IAE 1P16068
Tool Name:IAE 1P16068 Support fixture
Manufacturer Code:0AM53
Tool Number:IAE 1P16069
Tool Name:IAE 1P16069 Wrench
Manufacturer Code:0AM53
Tool Number:IAE 1P16107
Tool Name:IAE 1P16107 cover
Manufacturer Code:0AM53
Tool Number:IAE 1P16108
Tool Name:IAE 1P16108 cover
Manufacturer Code:0AM53
Tool Number:IAE 1P16389
Tool Name:IAE 1P16389 Holding base
Manufacturer Code:0AM53
Tool Number:IAE 1P16390
Tool Name:IAE 1P16390 Removal/installation drift