TASK 72-60-24-300-012 Input Gearshaft - Chromium Plate The Rear Bearing Shoulder, Repair-012 (VRS5142)

DMC:V2500-A0-72-60-2401-02A-647A-C|Issue No:002.00|Issue Date:2013-11-01

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 72-60-24-300-012 Input Gearshaft - Chromium Plate The Rear Bearing Shoulder, Repair-012 (VRS5142)

Effectivity

FIG/ITEM PART NO.

01-140

4P0175

01-140

4B0285

01-140

4P0287

01-140

4P0294

Material of component

RR

DESCRIPTION SYMBOL MATERIAL

Gearshaft

Wrought alloy steel

General

RR

DESCRIPTION SYMBOL MATERIAL

Gearshaft

Wrought alloy steel

Price and availability - none

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

Note

NOTE

  1. To identify 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
Grinding machineLOCALGrinding machine
Hot oil tankLOCALHot oil tank
Pressure shotpeen systemLOCALPressure shotpeen system
Process Plating TanksLOCALProcess plating tanks
OvenLOCALOven
Magnifying glass, 5xLOCALMagnifying glass, 5x
Vibrating marking pencilLOCALVibrating marking pencil

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 01-001 SOLVENT, DELETED0AM53CoMat 01-001
CoMat 02-017 WAXLOCALCoMat 02-017
CoMat 02-034 METALLIC MASKING TAPE(LEAD FOIL)76381CoMat 02-034
CoMat 05-030 CAST STEEL SHOT DELETED0AM53CoMat 05-030

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-60-24-320-060 Machine the Rear Bearing Shoulder of the Gearshaft,

      1. Machine the rear bearing shoulder.

      1. Remove all damage and wear.

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

        Do not remove more than 0.005in. (0.127 mm) of material.

        The preplating dimension must be between 4.4616 to 4.4606in. (113.325 to 113.300 mm) in relation to surface D.

        Surface roughness must be 32 microin. (0.8 micron) before plating.

        Use.

    2. SUBTASK 72-60-24-240-054 Examine the Gearshaft

      1. Do the magnetic particle inspection for cracks.

      1. Cracks are not permitted.

    3. SUBTASK 72-60-24-210-053 Nital Etch the Rear Bearing Shoulder

      1. Do the nital etch on the rear bearing shoulder to find signs of burnt metal.

      1. Machine the rear bearing shoulder if there are signs of burnt metal.

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

    4. SUBTASK 72-60-24-370-057 Do the De-embrittle Treatment

      1. Put the gearshaft into oil at 284 deg F (140 deg C) for 2 hours.

      1. Use a .

        Do this procedure as soon as possible in less than 2 hours after the etch.

    5. SUBTASK 72-60-24-380-053 Shot-peen the Rear Bearing Shoulder

      1. Shot-peen the rear bearing shoulder surface to an intensity of 0.006A to 0.008Ain.

    6. SUBTASK 72-60-24-110-053 Clean the Gearshaft

      1. Vapour degrease the gearshaft.

    7. SUBTASK 72-60-24-330-056 Chromium Plate the Rear Bearing Shoulder of the Gearshaft,

      1. Mask the areas of the gear not to be plated.

      2. Chromium plate the rear bearing shoulder.

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

        The plating out of the rear bearing shoulder area is permitted but must be removed.

        Use.

    3. Remove the mask.

      4. Clean and dry the gearshaft.

      1. Flush with cold water.

        Flush with hot water.

        Dry with air blast.

    8. SUBTASK 72-60-24-370-058 De-embrittle the Gearshaft

      1. Put the gearshaft into an at 284 to 392 deg F (140 to 200 deg C) for 5 hours.

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

    9. SUBTASK 72-60-24-220-078 Examine the Gearshaft

      1. Visually examine the plating for finish, cracks and adhesion.

      1. Plating must have a constant color.

        Cracks are not permitted.

        Bubbles or signs of burnt metal are not permitted.

    10. SUBTASK 72-60-24-320-061 Machine the Rear Bearing Shoulder of the Gearshaft,

      1. Machine the rear bearing shoulder.

      1. The last dimensions must be between 4.4665 to 4.4626in. (113.450 to 113.350 mm) in relation to surface D.

        Chamfer where necessary.

        Use.

    11. SUBTASK 72-60-24-220-079 Examine the Chromium Plated Area,

      Fig-72-60-23-990-013

      1. Visually examine the chromium plated area for cracks and adhesion.

      1. Use a .

        The natural network crack, emphasized by grinding, is permiteed.

      2. Measure the thickness of the plating.

      1. Do not accept a thickness less than 0.001in. (0.025 mm) after the last machining.

    12. SUBTASK 72-60-24-350-061 Record the Repair

      1. Vibro engrave VRS5142 adjacent to the part number.

      1. Use .

        Remove the metal lifted by marking.

    13. Figure: Chromium plate the rear bearing shoulder of the gearshaft

    Chromium plate the rear bearing shoulder of the gearshaft

Requirements After Job Completion

Follow-On Conditions

NONE
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:76381
Enterprise Name:3M COMPANY
BU Name:3M COMPANY
Department:3M CENTER
City:ST PAUL
State:MN
Zip Code:55144-1000
Country:USA
Phone Number:1-651-733-1110
Fax Number:1-651-733-9973
Internet:www.mmm.com
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
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
Supply Number:CoMat 02-017
Type:sp01
Supply Short Name:CoMat02-017 WAX
Supply Name:CoMat 02-017 WAX
Specification Groups:
Doc NumberType
11429Y/Y MIL-P-23242 OMAT: 228PLATING WAX WILKINS CAMPBELL
JCR-178PLATING WAX WILKINS CAMPBELL
Suppliers:
ManufacturerRemarks
LOCAL
K6835
K4404
Manufacturer Code:76381
Supply Number:CoMat 02-034
Type:sp01
Supply Short Name:CoMat 02-034 METALLIC MASKING TAPE (LEADFOIL)
Supply Name:CoMat 02-034 METALLIC MASKING TAPE(LEAD FOIL)
Specification Groups:
Doc NumberType
PMC 4138-1 THRU -53M LEAD FOIL TAPE 420 (with linner) or 3M LEAD FOIL TAPE 421 (without linner)
Suppliers:
ManufacturerRemarks
76381
Manufacturer Code:0AM53
Supply Number:CoMat 05-030
Type:sp01
Supply Short Name:CoMat 05-030 CAST STEEL SHOT DELETED
Supply Name:CoMat 05-030 CAST STEEL SHOT DELETED
Specification Groups:
Doc NumberType
DELETED
Suppliers:
ManufacturerRemarks
0AM53
Link not Found
Link not Found
Link not Found
Manufacturer Code:LOCAL
Tool Number:Oven
Tool Name:Oven
Link not Found
Manufacturer Code:LOCAL
Tool Number:Process plating tanks
Tool Name:Process Plating Tanks
Link not Found