TASK 72-60-22-300-015 Starter Drive Gear - Chromiun Plate The Rear Bearing Journal, Repair-015 (VRS5128)

DMC:V2500-A0-72-60-2201-00A-647A-C|Issue No:001.00|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 72-60-22-300-015 Starter Drive Gear - Chromiun Plate The Rear Bearing Journal, Repair-015 (VRS5128)

Effectivity

FIG/ITEM

PART NO.

01-260

4P0006

Material of component

RR

DESCRIPTION

SYMBOL

MATERIAL

Drive gear

10NiCrMo4

(SAE 9840)

General

NOTE

To identify the consumable materials refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Workshop inspection equipmentLOCALWorkshop inspection equipment
Grinding machineLOCALGrinding machine
Hot oil tankLOCALHot oil tank
BasketLOCALBasket
FurnaceLOCALFurnace
Magnifying glassLOCALMagnifying glass
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 72-60-22-320-067 Machine the Rear Bearing Journal of the Starter Drive Gear

    1. Refer to Figure.

      2. Machine the rear bearing journal.

      1. Remove all damage and wear.

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

      3. The journal diameter must be between 1.7320 to 1.7226 in. (43.993 to 43.754 mm).

      4. Surface rough must be 32 microinches (0.8 micron) before plating.

    2. SUBTASK 72-60-22-240-057 Examine the Starter Drive Gear

      1. Do the magnetic particle inspection for cracks.

      1. Refer to the SPM TASK 70-24-01-240-501.

      2. No cracks are permitted.

    3. SUBTASK 72-60-22-210-054 Nital Etch the Bearing Journal

      1. Do the nital etch on the bearing journal to find sign of burned metal.

      1. Refer to the SPM TASK 70-21-02-210-501.

      2. Machine the bearing journal if there is sign of burned metal.

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

    4. SUBTASK 72-60-22-370-062 Do the De-embrittle Treatment

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

      1. Use a hot oil tank.

      2. Do this process as soon as possible in 2 hours after the etch.

    5. SUBTASK 72-60-22-380-054 Shot-peen the Bearing Journal

      1. Shot-peen the bearing journal surface to an intensity of 6 to 8A.

      1. Refer to the SPM TASK 70-38-04-300-503.

    6. SUBTASK 72-60-22-110-059 Clean the Starter Drive Gear

      1. WARNING

        WHEN YOU USE COMAT 01-001 INHIBITED AND STABILIZED TRICHLOROETHANE YOU MUST USE THE NECESSARY PROTECTIVE CLOTHING. DO NOT GET THE SOLVENT ON YOUR SKIN OR IN YOUR EYES. YOU MUST NOT SMOKE WHEN YOU USE THE SOLVENT AS THE VAPOR CHANGES AND BECOMES TOXIC.

        Do the vapor degreasing.

      1. Refer to the SPM TASK 70-11-01-300-503.

    7. SUBTASK 72-60-22-330-059 Chromium Plate the Rear Bearing Journal

    1. Refer to Figure.

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

      3. Chromium plate the rear bearing journal.

      1. Refer to the SPM TASK 70-33-02-330-501.

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

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

    4. Remove the mask.

      5. Clean and dry the starter drive gear.

      1. Flush with cold water.

      2. Flush with hot water.

      3. Dry with air blast.

    8. SUBTASK 72-60-22-370-063 De-embrittle the Starter Drive Gear

      1. Put the drive gear into a furnace at 284 to 320 deg F (140 to 160 deg C) for 5 hours.

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

    9. SUBTASK 72-60-22-220-086 Examine the Starter Drive Gear

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

      1. Plating must have a constant color.

      2. No bubbles or sign of burned metal are permitted.

    10. SUBTASK 72-60-22-320-068 Machine the Rear Bearing Journal of the Starter Drive Gear

      1. Machine the rear bearing journal.

      1. The journal diameter must be between 1.7340 to 1.7344 in. (44.043 to 44.054 mm).

      2. Clean up the edges of groove and chamfers, where necessary.

    11. SUBTASK 72-60-22-220-087 Examine the Chromium Plated Areas

    1. Refer to Figure.

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

      1. Use a 5X magnifying glass.

      2. The natural network crack, emphasized by grinding, is permitted.

      3. Measure the thickness of the plating.

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

    12. SUBTASK 72-60-22-350-063 Record the Repair

      1. Vibro engrave VRS5128 adjacent to the part number.

      1. Remove metal lifted by marking.

    13. Figure: Repair details and dimensions

    Repair details and dimensions

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
Manufacturer Code:LOCAL
Tool Number:Basket
Tool Name:Basket
Manufacturer Code:LOCAL
Tool Number:Furnace
Tool Name:Furnace
Link not Found
Link not Found
Link not Found
Link not Found
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment