TASK 72-60-41-300-008 Angle Gearbox Casing - Nickel Plate The Bearing Seat Diameter, Repair-008 (VRS5104)

DMC:V2500-A0-72-60-4101-02A-647A-C|Issue No:002.00|Issue Date:2014-08-01

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 72-60-41-300-008 Angle Gearbox Casing - Nickel Plate The Bearing Seat Diameter, Repair-008 (VRS5104)

Effectivity

FIG/ITEM

PART NO.

01-300

4B0256

01-300

4B0354

Material of component

PART IDENT

SYMBOL

MATERIAL

Angle Gearbox Casing

Aluminum alloy

General

Price and availability - none

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

NOTE

Consumable materials are given in the SPM

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Workshop inspection equipmentLOCALWorkshop inspection equipment
Grinding MachineLOCALGrinding Machine
FPI inspection stationLOCALFPI inspection station
BasketLOCALBasket
Vapor degreaserLOCALVapor degreaser
Process Plating TanksLOCALProcess plating tanks
OvenLOCALOven
Magnifying glass, 4xLOCALMagnifying glass, 4x
Vibrating marking pencilLOCALVibrating marking pencil

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-60-41-320-067 Machine the Bearing Seat Diameter of the Angle Gearbox Casing

    1. Refer to Figure and Figure.

      2. Machine the bearing seat diameter.

      1. The diameter must be between 3.5505 and 3.5439 in (90.182 and 90.014 mm) after the removal of the damage.

      2. Remove all the damage and wear. Keep the removal of the material to the minimum necessary to remove the damage.

    2. SUBTASK 72-60-41-220-097 Examine the Angle Gearbox Casing

      1. Do the local fluorescent penetrant inspection for cracks.

      1. Refer to the SPM TASK 70-23-05-230-501.

      2. No cracks are permitted.

    3. SUBTASK 72-60-41-330-067 Nickel Plate the Bearing Seat Diameter of the Casing

    1. Refer to Figure and Figure.

      2. Do the nickel plating.

      1. Refer to the SPM TASK 70-33-08-300-503.

      2. Plate to a sufficient thickness to permit machining to the last dimensions.

      3. The plating out of the bearing seat diameter is permitted but must be removed.

    4. SUBTASK 72-60-41-370-007 De-embrittle the Casing

      1. Put the casing into the oven at 241 to 260 deg F (116 to 127 deg C) for 60 to 90 minutes.

      1. Do this process as soon as possible in less than 4 hours after the plating.

    5. SUBTASK 72-60-41-240-002 Examine the Casing

      1. Do the visual inspection of the plating for finish, cracks and adhesion.

      1. Plating must have a constant colour.

      2. No circumferential cracks are permitted.

      3. No roughness and blisters are permitted.

    6. SUBTASK 72-60-41-320-068 Machine the Bearing Seat Diameter of the Angle Gearbox Casing

    1. Refer to Figure and Figure.

      2. Machine the bore diameter.

      1. The dimension of the diameter must be between 3.5426 and 3.5435 in (89.982 and 90.004 mm). Clean the edges of the groove and chamfer where necessary.

    7. SUBTASK 72-60-41-220-098 Examine the Nickel Plated Area

    1. Refer to Figure and Figure.

      2. Do the visual inspection of the plated area for cracks and adhesion.

      1. Use a Magnifying glass, 4x. The natural network of crack, emphasized by grinding, is permitted.

    8. SUBTASK 72-60-41-350-076 Record the Repair

      1. Vibro engrave VRS5104 adjacent to the part number.

      1. Refer to the SPM TASK 70-09-00-400-501. Remove the metal lifted by marking.

    9. Figure: Repair details and dimensions

    Repair details and dimensions

    Figure: Repair details and dimensions

    Repair details and dimensions

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Added new part number to the effectivity table. (11VF843A)

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Tool Number:Basket
Tool Name:Basket
Link not Found
Manufacturer Code:LOCAL
Tool Number:Grinding Machine
Tool Name:Grinding Machine
Link not Found
Manufacturer Code:LOCAL
Tool Number:Oven
Tool Name:Oven
Manufacturer Code:LOCAL
Tool Number:Process plating tanks
Tool Name:Process Plating Tanks
Link not Found
Link not Found
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment