TASK 72-60-32-300-015 Angle Gearbox Support - Repair The Left Bearing Mating Surface By Bushing, Repair-015 (VRS5124)

DMC:V2500-A0-72-60-3201-03A-664A-C|Issue No:006.00|Issue Date:2021-05-01

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 72-60-32-300-015 Angle Gearbox Support - Repair The Left Bearing Mating Surface By Bushing, Repair-015 (VRS5124)

Effectivity

FIG/ITEM

PART NO.

01-300

4B0062

Material of component

RR

DESCRIPTION

SYMBOL

MATERIAL

Support

-

Aluminum alloy

Bushing

-

Wrought aluminum base alloy

General

Price and availability - none

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

NOTE

To identify the consumable materials refer to PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Arbor PressLOCALArbor press
FreezerLOCALFreezer
IAE 3F10336 Drift, bushing (dia 67)0AM53IAE 3F10336
IAE 3F10428 Guide pin0AM53IAE 3F10428
Magnifying GlassLOCALMagnifying Glass
OvenLOCALOven
Workshop inspection equipmentLOCALWorkshop inspection equipment

Consumables, Materials and Expendables

NONE

Spares

NameManufacturerPart Number / IdentificationQuantityRemark
BUSHING - ,(VRS5051)A34604L00081

01-306

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-60-32-350-074 Remove the Studs/Lock Rings (3 off)

    1. Refer to Figure.

      2. Remove the lock rings and the studs in the left bearing mating surface.

      1. Refer to Repair VRS5112 TASK 72-60-32-300-003 (REPAIR-003).

    2. SUBTASK 72-60-32-320-067 Machine the Left Bearing Bore in the Angle Gearbox Support

    1. Refer to Figure.

      2. Machine the left bearing bore.

      1. The diameter must be between 2.9118 in. to 2.9134 in. (73.960 mm to 74.000 mm) after the removal of the damage.

      2. If the diameter B is damaged refer to zone D.

      3. Deleted.

    3. SUBTASK 72-60-32-320-068 Machine the Left Bearing Mating Surface in the Angle Gearbox Support

    1. Refer to Figure.

      2. Machine the left bearing mating surface.

      1. The dimensions must be between 1.4154 in. to 1.4193 in. (35.950 mm and 36.050 mm) after the removal of the damage.

      2. Deleted.

    4. SUBTASK 72-60-32-220-084 Examine the Angle Gearbox Support

      1. Inspect the support for cracks in the area of the left bearing seat.

    5. SUBTASK 72-60-22-330-064 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.

    6. SUBTASK 72-60-32-350-075 Install the Flanged Bushing

    1. Refer to Figure.

      2. Install the guide pin.

      1. Put IAE 3F10428 Guide pin 1 off in the threaded hole in left bearing mating surface adjacent to machined bore.

    3. Install the bushing on the IAE 3F10336 Drift, bushing (dia 67) 1 off.

      4. WARNING

        DO NOT TOUCH THE HOT PARTS WITHOUT PROTECTIVE GLOVES.
        HOT PARTS CAN CAUSE REDDENING AND BLISTERING OF THE SKIN IF THE HANDS ARE NOT PROTECTED.
        IMMERSE THE CONTACTED AREA IN COLD WATER FOR 10 MINUTES IF THE SKIN IS BURNED. IMMEDIATELY GET MEDICAL AID IF PAIN OR BLISTERING PERSIST.

        NOTE

        The difference in temperature between the parts must be 216 deg F (120 deg C).

        Increase the temperature of the support and/or degrease the temperature of the assembled drift and bushing.

      1. Use an Oven and/or a Freezer.

      2. Do not increase the temperature of the housing above 248 deg F (120 deg C).

      3. Do not decrease the temperature of the assembled drift and bushing below -58 deg F (-50 deg C).

      5. Remove the support from the oven and/or the assembled drift and bushing from the freezer.

      1. Use protective gloves.

      6. CAUTION

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

        Install the bushing into machined bore.

      1. Use IAE 3F10336 Drift, bushing (dia 67) 1 off and an arbor press.

      2. Give sufficient back-up support at bushing seat area, to prevent support distortion when you install the bushing.

    7. Let the parts get the ambient temperature.

    8. Remove the drift and the guide pin.

    7. SUBTASK 72-60-32-320-069 Machine the Inner Diameter of the Flanged Bushing

    1. Refer to Figure.

      2. Machine the inner diameter of the flanged bushing.

      1. The dimension must be between 2.7553 in. to 2.7561 in. (69.985 mm to 70.004 mm). Chamfer where necessary.

      2. If diameter B is damaged refer to zone D.

      3. Deleted.

    8. SUBTASK 72-60-32-320-070 Machine the Flange Surface of the Flanged Bushing

    1. Refer to Figure.

      2. Machine the flange surface of the flanged bushing.

      1. The dimensions must be between 1.4921 in. to 1.500 in (37.900 mm to 38.100 mm).

      2. Deleted.

    9. SUBTASK 72-60-32-330-065 Apply the Chromate Conversion Coating

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

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

    10. SUBTASK 72-60-32-350-076 Install the New Studs and the New Lock Rings

    1. Refer to Figure.

      2. Install the new studs and the new lock rings.

      1. Refer to VRS5112 TASK 72-60-32-300-003 (REPAIR-003).

      3. Do the touch up treatment where the chromate conversion coating has been damaged by new lock rings installation.

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

    11. SUBTASK 72-60-32-350-077 Record the Repair

      1. Make a mark VRS5124 adjacent to the part number.

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

    12. Figure: Repair Details And Dimensions

    Repair Details And Dimensions

    Figure: Repair Details And Dimensions

    Repair Details And Dimensions

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Deleted grinding machine from support equipment and procedural steps. (19VF825)

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:4L0008
Part Name:BUSHING - ,(VRS5051)
Manufacturer Code:A3460
Manufacturer Code:LOCAL
Tool Number:Arbor press
Tool Name:Arbor Press
Manufacturer Code:LOCAL
Tool Number:Freezer
Tool Name:Freezer
Manufacturer Code:0AM53
Tool Number:IAE 3F10336
Tool Name:IAE 3F10336 Drift, bushing (dia 67)
Manufacturer Code:0AM53
Tool Number:IAE 3F10428
Tool Name:IAE 3F10428 Guide pin
Manufacturer Code:LOCAL
Tool Number:Magnifying Glass
Tool Name:Magnifying Glass
Manufacturer Code:LOCAL
Tool Number:Oven
Tool Name:Oven
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment