TASK 70-35-24-300-501-B01 "Replace Brazed Support Clips And/or Half Sleeves, Repair 1 (VRS7001)"

DMC:V2500-00-70-35-24-02A-920A-D|Issue No:002.00|Issue Date:2015-08-01

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 70-35-24-300-501-B01 "Replace Brazed Support Clips And/or Half Sleeves, Repair 1 (VRS7001)"

General

This TASK details the procedure for the replacement of brazed support clips and/or half sleeves.

Refer to the SPM TASK 70-35-24-300-501 (VRS7001) Repair 001 for the following:

(1) Effectivity

(2) Equipment and Materials

(3) General

All illustrations/Figs ref to the SPM TASK 70-35-24-300-501-D01

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 05-135 POLISHING BOBLOCALCoMat 05-135
CoMat 06-063 FLUORESCENT PENETRANT (POST-EMULSIFIED MEDIUM SENSITIVITY)LOCALCoMat 06-063
CoMat 06-064 FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY)LOCALCoMat 06-064
CoMat 03-009 LOW TEMPERATURE BRAZINGFLUXLOCALCoMat 03-009
CoMat 03-006 LOW TEMPERATURE BRAZINGFILLER WIRELOCALCoMat 03-006

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 70-35-24-350-005 Prepare the Repair Area

    1. Locally manufacture suitable jig.

    2. Remove defective component by locally heating until component falls away under its on weight.

    2. SUBTASK 70-35-24-110-002 Remove Remaining Braze

      1. Immerse pipe in 25 percent nitric acid solution at room temerature to remove old braze material.

        1. Refer to the SPM TASK 70-33-89-300-503, Subtask 70-33-89-300-002.

        1. Other brazed tube features, that do not require to be replaced, must be protected from acid attack.

        2. Use chemical cleaning equipment.

      2. Lightly polish brazed area to remove discoloration.

      1. Use CoMat 05-135 POLISHING BOB or similar with standard workshop equipment.

    3. SUBTASK 70-35-24-230-002 Do a Crack Test

      1. Do a local penetrant crack test on the repaired area(s).

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

        1. Cracks are not permitted.

    4. SUBTASK 70-35-24-110-003 Chemically Clean

      1. Chemically clean the tube and new components.

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

        1. Use chemical cleaning equipment.

    5. SUBTASK 70-35-24-310-003 Braze the Components

    1. Refer to Fig. 70-35-24-990-003.

      2. Assemble the components to the tube and locate in the jig, as appropriate.

      1. Check diametrical clearance where appropriate.

      3. Braze the components to the tube.

    6. SUBTASK 70-35-24-110-004 Chemically Clean

      1. Chemically clean the tube, to remove residual flux.

        1. Refer to the SPM TASK 70-31-19-300-503.

        1. Use chemical cleaning equipment.

    7. SUBTASK 70-35-24-220-002 Examine the Repair

    1. Refer to Fig. 70-35-24-990-003.

    2. Visually examine the brazed area.

    3. Braze Acceptance Standard.

      4. Braze witness.

      1. There must be a witness of at least 75 percent along each visible edge.

      5. Porosity.

      1. Accept less than 40 percent total area.

      6. Braze overspill on external surfaces.

      1. Accept, provided it does not interfere with diameters on half sleeves and clips, or mating faces on clips and does not extend beyond more than 0.118in. (3.00 mm) beyond the brazed feature.

      7. Longitudinal mismatch of half sleeves.

      1. Accept up to 0.051in. (1.30 mm) out of position.

      8. Circumferential position.

      1. Accept touching along one edge of half sleeves.

      9. Maximum diameter over brazed half sleeves.

      1. Tube diameter plus metal thickness half sleeve times 2 plus 0.020in. (0.50 mm).

      10. Maximum diameter over clip.

      1. Tube diameter plus metal thickness of clip plus 0.010in. (0.25 mm).

      11. Flux.

      1. Make sure all the flux is removed.

    8. SUBTASK 70-35-24-780-002 Pressure Test

    1. This subtask is deleted.

    9. SUBTASK 70-35-24-350-006 Identify the Repair

      1. Make a mark VRS7001/2 adjacent to the part number.

        1. Refer to the SPM TASK 70-09-00-400-501, SUBTASK 70-09-400-001.

        1. Use Electrolytic etch equipment.

        2. Alternatively it is permitted to use vibro-engraving equipment on cast or forged surfaces only.

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revise task reference. (PSAF15VC327)

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Supply Number:CoMat 03-006
Type:sp01
Supply Short Name:CoMat 03-006 LOW TEMPERATURE BRAZINGFILLER WIRE
Supply Name:CoMat 03-006 LOW TEMPERATURE BRAZINGFILLER WIRE
Specification Groups:
Doc NumberType
MSRR9500/708SILVER-FLO 55 AG14
OMAT:319EB.S.1845:1984
Suppliers:
ManufacturerRemarks
LOCAL
IE306
IAE82
08489
09535
K6835
Manufacturer Code:LOCAL
Supply Number:CoMat 03-009
Type:sp01
Supply Short Name:CoMat 03-009 LOW TEMPERATURE BRAZING FLUX
Supply Name:CoMat 03-009 LOW TEMPERATURE BRAZINGFLUX
Specification Groups:
Doc NumberType
MSRR 9500/124EASY-FLO FLUX
OMAT:323
Suppliers:
ManufacturerRemarks
LOCAL
K6835
91874
09535
IAE82
Manufacturer Code:LOCAL
Supply Number:CoMat 05-135
Type:sp01
Supply Short Name:CoMat 05-135 POLISHING BOB
Supply Name:CoMat 05-135 POLISHING BOB
Specification Groups:
Doc NumberType
OMAT: 505MEDIUM HARD FELT CROWN 59/65 W. STRENGTH. LEATHER WASHERS
Suppliers:
ManufacturerRemarks
LOCAL
0A7F7
IE446
K6835
Manufacturer Code:X222X
Supply Number:CoMat 06-063
Type:sp01
Supply Short Name:CoMat 06-063 FLUORESCENT PENETRANT (POST-EMULSIFIED MEDIUM SENSITIVITY)
Supply Name:CoMat 06-063 FLUORESCENT PENETRANT (POST-EMULSIFIED MEDIUM SENSITIVITY)
Specification Groups:
Doc NumberType
It is not permitted to mix the selected CoMat 06‐063 letter suffix material with other CoMat 06‐063 letter suffix materials. Where CoMat 06‐063 is specified with no suffix, use one of the CoMat 06‐063 letter suffix materials.
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:X222X
Supply Number:CoMat 06-064
Type:sp01
Supply Short Name:CoMat 06-064FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY)
Supply Name:CoMat 06-064 FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY)
Specification Groups:
Doc NumberType
It is not permitted to mix the selected CoMat 06‐064 letter suffix material with other CoMat 06‐064 letter suffix materials.Where CoMat 06‐064 is specified with no suffix, use one of the CoMat 06‐064 letter suffix materials.
Suppliers:
ManufacturerRemarks
X222X