TASK 72-60-22-300-006 Starter Drive Gear Housing - Repair The Bearing Mating Surface By Flanged Bushing, Repair-006 (VRS5026)

DMC:V2500-A0-72-60-2204-00A-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 72-60-22-300-006 Starter Drive Gear Housing - Repair The Bearing Mating Surface By Flanged Bushing, Repair-006 (VRS5026)

Effectivity

FIG/ITEM

PART NO.

01-300

4B0248

Material of component

RR

DESCRIPTION

SYMBOL

MATERIAL

Housing

-

Aluminum alloy

Flanged bushing

-

Wrought aluminum base alloy

General

NOTE

  1. To indentify the consumable materials refer to the PCI.

  2. Other consumable materials are given in the SPM.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
IAE 3F10336 Drift, bushing (dia 67)0AM53IAE 3F103361
IAE 3F10428 Guide pin0AM53IAE 3F104281
FPI Inspection stationLOCALFPI Inspection station
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
BUSHING - ,(VRS5051)A34604L0008

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-60-22-350-073 Remove the Studs

    1. Refer to Figure.

      2. Remove the studs and the lock rings.

      1. Refer to Repair, VRS 5024, TASK 72-60-22-300-004.

    2. SUBTASK 72-60-22-320-073 Machine the Bearing Bore in the Starter Drive Housing

    1. Refer to Figure.

      2. Machine the bearing bore.

      1. The diameter must be 2.9118 in. to 2.9134 in. (73.960 mm to 74.000 mm), after the removal of the damage.

      2. Deleted.

      3. Blend the drain holes.

      1. Blend the sharp edges around the three drain holes.

    3. SUBTASK 72-60-22-320-074 Machine the Bearing Mating Surface in the Starter Drive Housing

    1. Refer to Figure.

      2. Machine the bearing mating surface.

      1. The dimension must be 0.9862 in. to 0.9823 in. (25.050 mm to 24.950 mm) in relation to surface A, after the removal of the damage.

      2. Deleted.

    4. SUBTASK 72-60-22-220-103 Examine the Starter Drive Housing

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

      1. Use a 5x magnifying glass.

    5. SUBTASK 72-60-22-330-063 Apply the Chromate Conversion Coating

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

    6. SUBTASK 72-60-22-350-074 Install the Bushing

    1. Refer to Figure.

      2. Install the guide pin.

      1. Put IAE 3F10428 Guide pin 1 off in threaded hole on bearing mating surface, adjacent to machined bore.

    3. Install the bushing on the IAE 3F10336 Drift, bushing (dia 67) 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). 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 bore.

      1. Use IAE 3F10336 Drift, bushing (dia 67) 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 vane.

    7. SUBTASK 72-60-22-320-075 Machine the Inner Diameter of the Bushing

    1. Refer to Figure.

      2. Machine the inner diameter of the bushing.

      1. The dimension must be 2.7553 in. to 2.7561 in. (69.985 mm to 70.004 mm).

    3. Chamfer where necessary.

    8. SUBTASK 72-60-22-320-076 Machine the Flange Surface of the Bushing

    1. Refer to Figure.

      2. Machine the flange surface.

      1. The dimension must be 1.065 in. to 1.061 in. (27.050 mm to 26.950 mm) in relation to Surface A.

    9. SUBTASK 72-60-22-330-064 Apply the Chromate Conversion Coating

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

    10. SUBTASK 72-60-22-350-075 Install the New Studs

    1. Refer to Figure.

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

      1. Refer to Repair, VRS5024, TASK 72-60-22-300-004.

    11. SUBTASK 72-60-22-350-076 Record the Repair

      1. Vibro-engrave VRS5026.

      1. Remove the metal lifted by marking.

      2. Use vibrating marking pencil.

    12. Figure: Repair The Bearing Mating Surface By Flanged Bushing In Starter Drive Housing

    Repair The Bearing Mating Surface By Flanged Bushing In Starter Drive Housing

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:A3460
Enterprise Name:DELETED, SEE CAGE CODE U0406
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:X111X
Enterprise Name:N/A – DELETED CONSUMABLE MATERIAL
Part Number:4L0008
Part Name:BUSHING - ,(VRS5051)
Manufacturer Code:A3460
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 3F10336
Tool Name:IAE 3F10336 Drift, bushing (dia 67)
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