TASK 72-42-11-300-026 Diffuser Case - Repair The Oil Supply Inner Case Boss Bushing, Repair-026 (VRS3647)

DMC:V2500-A0-72-42-1100-00A-649A-C|Issue No:003.00|Issue Date:2019-05-01

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 72-42-11-300-026 Diffuser Case - Repair The Oil Supply Inner Case Boss Bushing, Repair-026 (VRS3647)

Effectivity

FIG/ITEM

PART No.

01-010

2A0051

01-010

2A2081-01

01-010

2A2581-01

01-010

2A2883-01

01-010

2A2889-01

01-010

2A2896-01

01-010

2A2885-01

01-010

2A2891-01

01-010

2A2897-01

01-010

2A3132

Material of component

PART IDENT

IAE

SYMBOL

MATERIAL

Diffuser case assembly

Nickel alloy

General

Price and availability - refer to IAE

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

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 03-284 WELDING FILLER WIRE, NiBASELOCALCoMat 03-284
Nickel Alloy (Inconel 718)LOCALAMS 5663

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-42-11-320-064 Machine the Oil Supply Inner Boss to Install the Bushing

    1. Refer to Figure and Figure.

      NOTE

      In Figure, dimension displaying as 11.205 in. (284.607 mm) from Surface A is post busing installation requirement.

    2. If there is a bushing in the boss, grind the tack welds to remove the bushing.

      3. Machine inside diameter of oil supply boss.

      1. Break edges 0.003 in. to 0.015 in. (0.08 mm to 0.38 mm) unless specified differently.

    2. SUBTASK 72-42-11-110-074 Clean the Diffuser Case After Machining

      1. Clean the diffuser case.

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

    3. SUBTASK 72-42-11-230-070 Examine the Oil Supply Inner Boss Surface for Indications

      1. Fluorescent penetrant examine the surface of the oil supply inner boss.

      1. Refer to the SPM TASK 70-23-05-230-501. Use high sensitivity level. No indications permitted.

    4. SUBTASK 72-42-11-330-001 Make the Bushing Locally for the Oil Supply Boss

    1. Refer to Figure.

      2. Use Nickel Alloy (Inconel 718) to machine bushing.

      1. Refer to Figure.

      2. Surface texture must be as given in SPM TASK 70-35-09-350-501.

      3. All surfaces must be 125 microinches (3.2 micrometers) unless specified differently.

      3. Clean the bushing.

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

      4. Fluorescent penetrant examine the bushing.

      1. Refer to the SPM TASK 70-23-02-230-501. No cracks permitted.

    5. SUBTASK 72-42-11-350-084 Install the Bushing into the Oil Supply Boss

    1. Make bushing cold to minus 110 deg F (minus 78.9 deg C).

      2. Install bushing in the inside diameter of the machined boss.

      1. Refer to Figure.

    6. SUBTASK 72-42-11-310-052 Tack Weld the Bushing to the Boss

      1. CAUTION

        DO NOT USE THIS WELD PROCESS FOR ANY OTHER DIFFUSER CASE REPAIRS UNLESS SPECIFICALLY INSTRUCTED.

        Tack weld bushing to diffuser case.

      1. Refer to the SPM TASK 70-31-13-310-501.

      3. Refer to Figure.

      4. Stress-relief after welding is not necessary.

    7. SUBTASK 72-42-11-230-056 Inspect the Tack Welds

      1. Fluorescent penetrant inspect tack welds.

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

      2. No cracks are permitted in weld, bushing or diffuser case.

    8. SUBTASK 72-42-11-350-085 Identify the Repair

      1. Make a mark VRS3647 adjacent to part number.

      1. Make a permanent mark by procedure given in SPM TASK 70-09-00-400-501.

      2. Use vibro-peen method.

      3. Remove raised metal caused by marking.

    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

    Figure: Repair Details and Dimensions

    Sheet 3

    Legend
    Repair Details and Dimensions

    Sheet 3

    Close

    Figure: Repair Details and Dimensions

    Sheet 4

    Legend
    Repair Details and Dimensions

    Sheet 4

    Close

    Figure: Repair Details and Dimensions

    Repair Details and Dimensions

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Update fig 2 and fig 5 (11VC190)

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Supply Number:AMS 5663
Type:sp01
Supply Short Name:
Supply Name:Nickel Alloy (Inconel 718)
Suppliers:
ManufacturerRemarks
LOCAL
Manufacturer Code:LOCAL
Supply Number:CoMat 03-284
Type:sp01
Supply Short Name:CoMat 03-284 WELDING FILLER WIRE, Ni BASE
Supply Name:CoMat 03-284 WELDING FILLER WIRE, NiBASE
Specification Groups:
Doc NumberType
INCONEL 718 AMS 5832 AWS 5.14 MSRR9500/220
INCONEL 718 AMS 5832 AWS 5.14CLASS ER NI FE Cr-2 OMAT:3/206
INCONEL 718 AMS 5832 AWS 5.14CLASS ER NI FE Cr-2
Suppliers:
ManufacturerRemarks
LOCAL
28553
IE137
08489
IE508
0ZDB5
2R602
55596
58401
80357
K6835