TASK 72-32-53-300-024 No. 1 Bearing Face Seal - Repair The Anti-Rotation Slot Bushing, Repair-024 (VRS3750)

DMC:V2500-A0-72-32-5302-02A-920A-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 72-32-53-300-024 No. 1 Bearing Face Seal - Repair The Anti-Rotation Slot Bushing, Repair-024 (VRS3750)

Effectivity

FIG/ITEM PART NO.

01-150

2A1773

01-150

2A2199

01-150

2A2915

01-180

2A2924

01-194

2A2916

Material of component

DECSRIPTION

SYMBOL

MATERIAL

No. 1 bearing face seal

-

-

General

NOTE

To identify the consumable materials refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

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

Spares

NameManufacturerPart Number / IdentificationQuantityRemark
BushingLOCALLocally Fabricated2

Figure 4 and Figure 5

RivetOAM534

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-32-53-350-068 Remove the Crabon Seal Element

      1. Remove the carbon seal element from the face seal assembly.

      1. NOTE

        If this repair was not done before, go to Step. If this repair was done before, do Step through Step.

        Refer to Repair, VRS3385 TASK 72-32-53-300-008 (REPAIR-008).

    2. SUBTASK 72-32-53-320-057 Remove the Bushings

      CAUTION

      DO NOT ENLARGE OR DAMAGE THE RIVET HOLE OR FACE AREA.

      1. Remove and discard the worn bushings.

      1. Drill or machine the manufactured end of the rivets so that the remaining rivet piece can be punched out.

    3. SUBTASK 72-32-53-220-100 Examine the Slot

    1. Refer to Figure.

    2. Do a dimensional inspection of the slot width.

    4. SUBTASK 72-32-53-220-101 Examine the Rivet Holes

      1. Do an inspection of the rivet holes.

      1. Refer to the SPM TASK 70-39-03-390-501.

    5. SUBTASK 72-32-53-350-069 Repair Slot Area for Wear or to Get the Correct Position of the New Bushings

      1. If the slot area must be restored to repair wear or to get the correct position of the new bushings, do the following.

        1. If necessary, repair the slots.

        1. Refer to Repair-021 (VRS3545) TASK 72-32-53-300-021.

    6. SUBTASK 72-32-53-350-070 Repair Rivet Holes for Wear or to Get the Correct Position of the New Bushings

    1. Refer to Figure.

      2. If the rivet holes must be restored to repair wear or to get the correct position of the new bushings, do the following (if necessary).

        1. Weld the rivet holes.

        1. Refer to the SPM TASK 70-31-13-310-016. Use CoMat 03-392 WELDING WIRE and the Manual Gas Tungsten Arc (GTAW-MA) method.

        2. Do a stress relieve of the face seal assembly.

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

      3. If necessary, machine/grind the welds flush at the rivet holes on both sides of the flange.

      4. Do a dimensional inspection of the carbon interface bore.

        5. Do a fluorescent penetrant inspection of the face seal assembly.

        1. Refer to the SPM TASK 70-23-01-230-501.

        6. Clean the repair area.

        1. Refer to the SPM TASK 70-11-26-300-503.

    7. SUBTASK 72-32-53-320-058 Machine the Slots and Flange Thickness

    1. Refer to Figure and Figure.

    2. Machine the slots and flange thickness to accomodate the bushings at Locations F.

    8. SUBTASK 72-32-53-350-071 Locally Fabricate Bushings

    1. Refer to Figure and Figure.

      2. Locally fabricate the bushings from AMS 5613 material. The following apply:

        1. Heat treat the bushings.

        1. Refer to the SPM TASK 70-37-28-370-501.

        2. Hardness must be HRC 25-33 or equivalent.

        1. Hardness impression is permitted on all surfaces but not plated areas.

      3. Unless otherwise specified, break edges 0.005 to 0.015 in. (0.13 to 0.38 mm).

      4. Unless otherwise specified, surface finish must be 125 micro inch or equivalent for all surcafes.

        5. Do a fluorescent penetrant inspection of the bushing.

        1. Refer to the SPM TASK 70-23-02-230-501.

        6. Chrome plate area D.

        1. Use AMS 2406 to a thickness of 0.0005 to 0.0015 in. (0.013 to 0.038 mm).

          Bake at 735 to 765 deg F (390.55 to 407.22 deg C) for two hours after plating. Dimensions are after plating.

      7. Plating is optional and can be incomplete in area E.

    9. SUBTASK 72-32-53-110-087 Clean the Bushings

      1. Clean the locally fabricated bushings.

      1. Refer to the SPM TASK 70-11-03-300-503.

    10. SUBTASK 72-32-53-350-072 Install the Bushings

    1. Refer to Figure.

      2. Position and clamp bushings in place at locations F. Transfer drill the bushing rivet holes into the face seal assembly and secure with rivets.

      1. NOTE

        It is permitted to exceed the edge distance requirements not more than 50 percent.

        Refer to the SPM TASK 70-39-03-390-501.

    11. SUBTASK 72-32-53-220-102 Inspect the Bushings

    1. Refer to Figure.

    2. Do a dimensional inspection of the bushing locations.

    12. SUBTASK 72-32-53-350-073 Install the Carbon Seal Element

      1. Install the carbon seal element to the face seal assembly.

      1. Refer to Repair, VRS3385 TASK 72-32-53-300-007 (REPAIR-008).

    13. 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

    Figure: Repair Details and Dimensions

    Repair Details and Dimensions

    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
Change Type:

Modified the procedure and Figure 1. (PSAF13VC218)

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Link not Found
Link not Found
Link not Found
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