TASK 72-60-28-300-014 Generator Drive Gear Housing - Repair The Bearing Mating Surface By Flanged Bushing, Repair-014 (VRS5063)

DMC:V2500-A0-72-60-2804-04A-664A-C|Issue No:003.00|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 72-60-28-300-014 Generator Drive Gear Housing - Repair The Bearing Mating Surface By Flanged Bushing, Repair-014 (VRS5063)

Effectivity

FIG/ITEM

PART NO.

01-450

4B0161

01-450

4B0271

01-450

4B0281

01-450

4B0312

Material of component

RR

DESCRIPTION

SYMBOL

MATERIAL

Housing

-

A357 T613 (AMS 4219)

Flanged bushing

-

Wrought aluminum base alloy

General

Price and availability - none

The practices and processes referred to in the procedure by the TASK numbers are in the SPP.

NOTE

To identify the consumable materials refer to the PCI.

NOTE

Other consumable materials are given in the SPM.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
FPI Inspection stationLOCALFPI Inspection station
IAE 3F10338 Drift0AM53IAE 3F103381
IAE 3F10428 Guide pin0AM53IAE 3F104281
Magnifying Glass, 5xLOCALMagnifying Glass, 5x
OvenLOCALOven
Process Plating TanksLOCALProcess plating tanks
Vibrating Marking PencilLOCALVibrating Marking Pencil

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 01-001 SOLVENT, DELETEDX111XCoMat 01-001

Spares

NameManufacturerPart Number / IdentificationQuantityRemark
Flanged bushingLOCAL4L0015

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-60-28-350-082 Remove the Studs

    1. Refer to Figure.

      2. Remove the studs and the lock ring.

      1. Refer to Repair VRS5059, TASK 72-60-28-300-006.

    2. SUBTASK 72-60-28-320-083 Machine the Bearing Seat of the IDG Housing

    1. Refer to Figure.

      2. Machine the Bearing seat.

      1. The diameter must be between 3.345 in. to 3.347 in. (84.96 mm to 85.00 mm).

      2. Remove all damage and wear.

      3. Keep the removal of material to the minimum necessary to remove the damage.

      4. Deleted.

    3. SUBTASK 72-60-28-320-084 Machine the Bearing Mating Surface of the IDG Housing

    1. Refer To Figure.

      2. Machine the bearing mating surface.

      1. The dimensions must be between 1.553 in. to 1.549 in. (39.45 mm to 39.35 mm) after the removal of the damage in relation to surface A.

      2. Remove all damage and wear.

      3. Keep the removal of material to the minimum necessary to remove the damage.

      4. Deleted.

    4. SUBTASK 72-60-28-220-109 Examine the IDG Housing

      1. Inspect the housing for cracks in the area of the seat.

    5. SUBTASK 72-60-28-330-070 Apply the Chromate Conversion Coating

      1. Apply the chromate conversion coating to the machined surfaces.

      1. Refer to the SPM TASK 70-38-02-300-503.

    6. SUBTASK 72-60-28-350-083 Install the Bushing

    1. Refer to Figure.

      2. Install the guide pins.

      1. Put threaded IAE 3F10428 Guide pin 1 off in threaded hole in seal housing mating surface adjacent to machine seat.

    3. Install the bushing on the IAE 3F10338 Drift 1 off.

      4. WARNING

        DO NOT TOUCH THE HOT PARTS WITHOUT PROTECTIVE GLOVES.
        HOT PARTS CAN CAUSE REDDENING AND BLISTERING OF THE SKIN IF THE HANDS ARE NOT PROTECTED.
        IMMERSE THE CONTACTED AREA IN COLD WATER FOR 10 MINUTES IF THE SKIN IS BURNED. IMMEDIATELY GET MEDICAL ATTENTION IF PAIN OR BLISTERING PERSISTS.

        Increase the temperature of the housing and/or decrease the temperature of the assembled drift and bushing.

      1. Use an Oven and/or a freezer.

      2. Do not increase the temperature of the housing above 284 deg F (140 deg C).

      3. Do not decrease the temperature of the assembled drift and bushing below -58 deg F (-50 deg C).

    5. NOTE

      The difference in temperature between the parts must be 216 deg F (120 deg C).

      Remove the housing from the oven and/or the assembled drift and bushing from the freezer.

      6. CAUTION

        INSTALL BUSHING IN MACHINED BORE IMMEDIATELY AFTER REMOVAL FROM FREEZER, OTHERWISE BUSHING CANNOT BE CORRECTLY INSTALLED.

        Install the bushing into machined seat.

      1. Use IAE 3F10338 Drift 1 off and an arbor press.

      2. Give sufficient back-up support at bushing bore area to prevent housing distortion when you install the bushing.

    7. Allow the parts to reach ambient temperature.

    8. Remove the drift and the guide pins.

    7. SUBTASK 72-60-28-320-085 Machine the Inner Diameter of the Bushing

    1. Refer to Figure.

      2. Machine the inner diameter of the bushing.

      1. The dimensions must be 3.1894 in. to 3.1903 in. (81.012 mm to 81.034 mm).

      2. Chamfer where necessary.

      3. Deleted.

    8. SUBTASK 72-60-28-320-086 Machine the Flange Surface of the Bushing

    1. Refer to Figure.

      2. Machine the flange surface of the bushing.

      1. The dimensions must be 1.634 in. to 1.626 in. (41.50 mm to 41.30 mm) in relation to surface A.

      2. Deleted.

    9. SUBTASK 72-60-28-330-071 Apply the Chromate Conversion Coating

      1. Apply the chromate conversion coating to the machined surfaces of the bushing.

      1. Refer to the SPM TASK 70-38-02-300-503.

    10. SUBTASK 72-60-28-350-084 Install the New Studs

    1. Refer to Figure.

      2. Install the new studs and the new lock rings.

      1. Refer to Repair VRS5059, TASK 72-60-28-300-006.

    11. SUBTASK 72-60-28-350-085 Record the Repair

      1. Vibro engrave VRS5063 adjacent to the part number.

      1. Remove the metal lifted by marking.

    12. Figure: Repair Details And Dimensions

    Repair Details And Dimensions

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Deleted grinding machine from support equipment and procedural steps. (19VF825)

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:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:X111X
Enterprise Name:N/A – DELETED CONSUMABLE MATERIAL
Link not Found
Manufacturer Code:X111X
Supply Number:CoMat 01-001
Type:sp01
Supply Short Name:CoMat 01-001 SOLVENT, DELETED
Supply Name:CoMat 01-001 SOLVENT, DELETED
Specification Groups:
Doc NumberType
wiring harnesses. Where CoMat 01‐001 is specified to clean mechanical components, use one or more of the solvents that SPM TASK 70‐11‐26‐300‐503 specifies as applicable.DELETED. Where CoMat 01‐001 is specified to clean electrical contacts or wiring harnesses, use one or more of the solvents that SPM TASK 70‐11‐57‐110‐501 specifies to clean electrical contacts or
Suppliers:
ManufacturerRemarks
X111X
Manufacturer Code:LOCAL
Tool Number:FPI Inspection station
Tool Name:FPI Inspection station
Manufacturer Code:0AM53
Tool Number:IAE 3F10338
Tool Name:IAE 3F10338 Drift
Manufacturer Code:0AM53
Tool Number:IAE 3F10428
Tool Name:IAE 3F10428 Guide pin
Manufacturer Code:LOCAL
Tool Number:Magnifying Glass, 5x
Tool Name:Magnifying Glass, 5x
Manufacturer Code:LOCAL
Tool Number:Oven
Tool Name:Oven
Manufacturer Code:LOCAL
Tool Number:Process plating tanks
Tool Name:Process Plating Tanks
Manufacturer Code:LOCAL
Tool Number:Vibrating Marking Pencil
Tool Name:Vibrating Marking Pencil