TASK 72-60-32-300-007 Angle Gearbox Support - Replace The Support Bushings, Repair-007 (VRS5116)

DMC:V2500-A0-72-60-3201-02A-920A-C|Issue No:004.00|Issue Date:2018-08-01

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 72-60-32-300-007 Angle Gearbox Support - Replace The Support Bushings, Repair-007 (VRS5116)

Effectivity

FIG/ITEM

PART NO.

01-300

4B0062

01-300

4B0353

01-300

4B0374

Material of component

PART IDENT

MATERIAL

Casing

Aluminum alloy

Bushing

Stainless steel

Plug expansion and pin

Aluminum

General

This Repair must only be done when the instruction to do so is given in the relevant Inspection/Check.

The TASK gives the procedure to replace the support bushes of the angle gearbox support.

Price and availability - none.

NOTE

Equipment and materials necessary to do this repair are in the SPM TASKs given below:

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Arbor PressLOCALArbor press
Bore gageLOCALBore gage
Boring machineLOCALBoring machine
Fluorescent Penetrant Inspection EquipmentLOCALFluorescent Penetrant Inspection Equipment
FreezerLOCALFreezer
Hot air gunLOCALHot air gun
Vibrating Marking PencilLOCALVibrating Marking Pencil
Workshop inspection equipmentLOCALWorkshop inspection equipment

Consumables, Materials and Expendables

NONE

Spares

NameManufacturerPart Number / IdentificationQuantityRemark
BUSHINGA34604L0091
BUSHING0AM534P00322
Pin0AM53AS3124-121
Plug Expansion0AM53AS3123-121

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-60-32-320-091 Remove the Support Bushes

    1. Refer to Figure, Figure and Figure.

      2. Remove the pin, the expansion plug and the support bushes.

      1. Use applicable tools.

        Reject all parts.

    2. SUBTASK 72-60-32-220-107 Examine the Support Bushes

    1. Refer to Figure, Figure and Figure.

      2. Visually examine diameter G of the bores of the support.

      1. Scratches and scores are not permitted.

      2. Machine diameter G to remove scratches and scores.

      3. Keep machining to a minimum to remove the defects.

      4. Make sure that the machined diameter is not more than 0.6048 in. (15.363 mm). Surface finish must be 1.6 microns.

    3. SUBTASK 72-60-32-230-066 Examine the Bores of the Support Bushes for Cracks

      1. Do a penetrant crack test on the machined bores.

        1. No cracks are permitted.

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

    4. SUBTASK 72-60-32-380-003 Apply the Chromate Conversion Coating

      1. Apply the chromate conversion coating to the machined surfaces.

      1. Refer to the SPM TASK 70-38-02-300-503.

    5. SUBTASK 72-60-32-220-108 Do a Selection and Rework the Bushings

    1. Refer to Figure, Figure and Figure.

      2. Measure and record diameter G.

      1. Use a Bore gage.

      3. Do a selection and rework the bushing.

      1. If diameter G is measured to not more than 0.5898 in. (14.982 mm), install the bush 4P0032.

      2. If diameter G is between 0.5898 in. (14.982 mm) and 0.6048 in. (15.363 mm), install bush 4L0091. Before you install the bush, rework its fit diameter to make sure the fit interference with the bore diameter G is between 0.0010 and 0.0026 in. (0.025 and 0.065 mm).

      3. Surface finish of the fit diameter of bush 4L0091 must be 1.6 microns.

    6. SUBTASK 72-60-32-350-102 Install the Bushings

    1. WARNING

      DO NOT TOUCH HOT PARTS WITHOUT PROTECTIVE GLOVES.

      WARNING

      HOT PARTS CAN CAUSE REDDENING AND BLISTERING OF THE SKIN IF HANDS ARE NOT PROTECTED.

      WARNING

      PUT THE CONTACTED AREA IN COLD WATER FOR 10 MINUTES IF THE SKIN IS BURNED. IMMEDIATELY GET MEDICAL ATTENTION IF PAIN OR BLISTERING PERSISTS.

      Refer to Figure, Figure and Figure.

      2. Increase the temperature of the housing and/or decrease the temperature of the bushing.

      1. Make sure that the temperature of the aluminium housing is not more than 250 deg F (120 deg C).

      2. Make sure that the temperature of the bushing is not less than -58 deg F (-50 deg C).

      3. Use the Hot air gun and/or the Freezer.

      3. NOTE

        The difference in temperature between the parts must be less than 250 deg F (120 deg C).

        Install the bushing into the machined bore.

      1. Use protective gloves.

      2. Use an Arbor Press, a drift and a guide pin.

      3. Give sufficient back-up support at bushing bore area, to prevent housing distortion when you install the housing.

    4. CAUTION

      INSTALL THE BUSHING IN THE MACHINED BORE IMMEDIATELY AFTER REMOVAL FROM FREEZER, OTHERWISE BUSHING CANNOT BE CORRECTLY INSTALLED.

      Remove the drift and the guide pin.

    5. Let the parts get to room temperature.

    7. SUBTASK 72-60-32-320-092 Machine the Inner Diameters of the Bushing

    1. Refer to Figure and Figure.

      2. Line ream the inner holes of the bushing.

      1. The final dimension must be between 0.37520 and 0.37559 in. (9.5300 and 9.5400 mm).

      2. Use a drilling equipment.

    8. SUBTASK 72-60-32-350-103 Install the Expansion Plug and the Pin

    1. Refer to Figure and Figure.

      2. Install the expansion plug and the pin.

      1. Use the applicable tools.

    9. SUBTASK 72-60-32-350-104 Identify the Repair

    1. Refer to Figure.

      2. Vibro-engrave VRS5116 adjacent to part number.

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

    10. Figure: Repair Details and Dimensions

    Sheet 1

    Legend
    Repair Details and Dimensions

    Sheet 1

    Close

    Figure: Repair Details and Dimensions

    Repair Details and Dimensions

    Figure: Repair Details and Dimensions

    Sheet 3

    Legend
    Repair Details and Dimensions

    Sheet 3

    Close

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised effectivity table to add part numbers. (17VF828)

Manufacturer Code:0AM53
Enterprise Name:IAE INTERNATIONAL AERO ENGINES AG
BU Name:NULL
Building:SUITE 400
Street:628 HEBRON AVENUE
City:GLASTONBURY
State:CT
Zip Code:06033
Country:USA
Manufacturer Code:A3460
Enterprise Name:DELETED, SEE CAGE CODE U0406
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Part Number:4L0091
Part Name:BUSHING
Manufacturer Code:A3460
Part Number:4P0032
Part Name:BUSHING
Manufacturer Code:0AM53
Link not Found
Link not Found
Manufacturer Code:LOCAL
Tool Number:Arbor press
Tool Name:Arbor Press
Link not Found
Manufacturer Code:LOCAL
Tool Number:Boring machine
Tool Name:Boring machine
Link not Found
Manufacturer Code:LOCAL
Tool Number:Freezer
Tool Name:Freezer
Link not Found
Manufacturer Code:LOCAL
Tool Number:Vibrating Marking Pencil
Tool Name:Vibrating Marking Pencil
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment