TASK 72-32-25-300-026 No. 3 Bearing Face Seal - Weld Repair The Anti-rotation Slots, Repair-026 (VRS3546)

DMC:V2500-A0-72-32-2502-00A-627A-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 72-32-25-300-026 No. 3 Bearing Face Seal - Weld Repair The Anti-rotation Slots, Repair-026 (VRS3546)

Effectivity

FIG/ITEM

PART NO.

02-150

2A1786

02-150

2A3854

02-150

2A4286

Material of component

RR

DESCRIPTION

SYMBOL

MATERIAL

No. 3 bearing face seal

-

-

General

Price and availability - none

This Repair applies to parts worn beyond the limits of TASK 72-32-25-300-008 (VRS3404) (REPAIR-008) which allows chrome plate thickness of up to 0.008 in. (0.203 mm) per side.

NOTE

To identify the consumable materials refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Machine shop equipmentLOCALMachine shop equipment
Welding equipmentLOCALWelding equipment

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 03-392 WELDING WIRELOCALCoMat 03-392

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-32-25-330-058 Remove the Chrome Plate by Chemical or by Machine from the Anti-Rotation Slots

      NOTE

      Carbon seal replacement is necessary after you complete the chrome plate repair. Masking the carbon seal is not permitted because it is possible that there will be contamination with the plating solution and the masking material.

    1. Refer to Figure.

      2. Remove the chrome plate by chemical.

      1. Refer to the SPM TASK 70-30-02-330-501.

      3. Remove the chrome plate by machine.

      1. Machine the slots sufficiently to remove chrome plate from sides or side of slots. Keep base metal removal to a minimum.

    2. SUBTASK 72-32-25-310-051 Weld Buildup Worn Side or Sides of Anti-Rotation Slots

    1. Refer to Figure.

      2. Weld buildup worn side or sides of slots sufficiently to permit machining and chrome thickness of 0.0005 to 0.0015 in (0.013 to 0.038 mm) per side, Figure.

      3. Stress relieve the face seal after weld repair.

      1. Refer to the SPM TASK 70-37-07-370-501.

    3. SUBTASK 72-32-25-340-055 Machine Weld Repair of Anti-Rotation Slots

    1. Refer to Figure.

    2. Machine weld repair sufficiently to allow chrome plate thickness of 0.0005 to 0.0015 in (0.013 to 0.038 mm) thickness per side after finish machining.

    4. SUBTASK 72-32-25-220-108 Inspect Finish Machined Areas on the Anti-Rotation Slots

    1. Refer to Figure.

      2. Inspect finish machined slots for cracks.

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

    5. SUBTASK 72-32-25-330-059 Apply Chrome Plate to the Anti-Rotation Slots

    1. Refer to Figure.

      2. Apply chrome plate to the anti-rotation slots.

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

        The plating thickness must be sufficient to permit final machining with a final plating thickness of 0.0005 to 0.0015 in (0.013 to 0.038 mm).

        NOTE

        No plate permitted outside of enclosed area. Dimensions are after plating.

    6. SUBTASK 72-32-25-370-052 Bake the No. 3 Bearing Face Seal after Plate

    1. Refer to Figure.

    2. Bake the Face Seal at 735 to 765 deg F (391 to 407 deg C) for two hours.

    7. SUBTASK 72-32-25-320-058 Machine the 3 Bearing Face Seal Anti-Rotation Slots after Plate

    1. Refer to Figure.

    2. Finish machine the face seal anti-rotation slots.

    8. SUBTASK 72-32-25-220-109 Visually Inspect the No. 3 Bearing Face Seal

    1. Refer to Figure.

    2. Visually inspect face seal.

    9. Figure: Repair Details and Dimensions

    Sheet 1

    Legend
    Repair Details and Dimensions

    Sheet 1

    Close

    Figure: Repair Details and Dimensions

    Sheet 2

    Legend
    Repair Details and Dimensions

    Sheet 2

    Close

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Supply Number:CoMat 03-392
Type:sp01
Supply Short Name:CoMat 03-392 WELDING WIRE
Supply Name:CoMat 03-392 WELDING WIRE
Specification Groups:
Doc NumberType
AMS 577651410
Suppliers:
ManufacturerRemarks
LOCAL
2R602
58401
55596
Manufacturer Code:LOCAL
Tool Number:Machine shop equipment
Tool Name:Machine shop equipment
Manufacturer Code:LOCAL
Tool Number:Welding equipment
Tool Name:Welding equipment