TASK 72-60-43-300-002 Angle Gearbox Bearing Housing Diaphragm - Nickel Plate The Inner Diameter, Repair-002 (VRS5022)

DMC:V2500-A0-72-60-4304-00A-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 72-60-43-300-002 Angle Gearbox Bearing Housing Diaphragm - Nickel Plate The Inner Diameter, Repair-002 (VRS5022)

Effectivity

FIG/ITEM

PART NO.

01-080

4P0018

Material of component

RR

DESCRIPTION

SYMBOL

MATERIAL

Diaphragm

40NiCrMo7

(AMS 6415)

General

Price and availability - none

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

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Workshop inspection equipmentLOCALWorkshop inspection equipment
Grinding machineLOCALGrinding machine
FurnaceLOCALFurnace
Magnifying glass, 4xLOCALMagnifying glass, 4x
Vibrating marking pencilLOCALVibrating marking pencil

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-60-43-320-051 Machine the Inner Diameter of the Diaphragm

    1. Refer to Figure.

      2. Machine the inner diameter of the diaphragm.

      1. The inner diameter must be between 2.3922 to 2.3984 in. (60.762 to 60.920 mm).

      2. Remove all damage and wear.

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

      4. Use a grinding machine.

    2. SUBTASK 72-60-43-240-053 Examine the Diaphragm

      1. Do a magnetic particle inspection for cracks.

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

        1. No cracks are permitted.

    3. SUBTASK 72-60-43-330-051 Nickel Plate the Inner Diameter of the Diaphragm

    1. Refer to Figure.

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

      1. Do the nickel plating.

        2. Refer to the SPM TASK 70-33-05-300-503.

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

        2. Plating not in the inner diameter area is permitted but must be removed.

    3. Remove the mask.

      4. Clean and dry the diaphragm.

      1. Flush with cold water.

      2. Flush with hot water.

      3. Dry with an air blast.

    4. SUBTASK 72-60-43-370-051 De-embrittle the Diaphragm

      1. Heat the diaphragm to 349 to 400 deg F (176 to 204 deg C) for 4 hours.

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

      2. Use a Furnace.

    5. SUBTASK 72-60-43-220-061 Examine the Inner Diameter

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

      1. Plating must have a constant color.

      2. No circumferential cracks are permitted.

      3. No roughness or blistering are permitted.

    6. SUBTASK 72-60-43-320-052 Machine the Inner Diameter of the Diaphragm

    1. Refer to Figure.

      2. Machine the inner diameter of the diaphragm.

      1. The inner diameter must be between 2.3905 to 2.3910 in. (60.720 to 60.732 mm).

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

    7. SUBTASK 72-60-43-220-062 Examine the Inner Diameter of the Diaphragm

    1. Refer to Figure.

      2. Do a visual inspection of the plated areas for cracks or adhesion.

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

      3. Measure the thickness of the plating.

      1. Do not accept a thickness less than 0.0006 in. (0.015 mm) after the last machining.

    8. SUBTASK 72-60-43-350-052 Record the Repair

      1. Vibro engrave VRS5022 adjacent to the part number.

      2. Remove the metal which is lifted by vibro engraving.

    9. Figure: Repair details and dimension

    Repair details and dimension

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Tool Number:Furnace
Tool Name:Furnace
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Link not Found
Link not Found
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment