TASK 72-60-32-300-014 Angle Gearbox Support - Repair The Left Bearing Bore By Bushing, Repair-014 (VRS5123)

DMC:V2500-A0-72-60-3201-02A-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 72-60-32-300-014 Angle Gearbox Support - Repair The Left Bearing Bore By Bushing, Repair-014 (VRS5123)

Effectivity

FIG/ITEM

PART NO.

01-300

4B0062

01-300

4B0353

01-300

4B0374

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
Magnifying GlassLOCALMagnifying Glass
OvenLOCALOven
Workshop inspection equipmentLOCALWorkshop inspection equipment

Consumables, Materials and Expendables

NONE

Spares

NameManufacturerPart Number / IdentificationQuantityRemark
BUSHING0AM534L00071

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-60-32-320-065 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 and 74.000 mm) after the removal of the damage.

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

    3. Deleted.

    2. SUBTASK 72-60-32-220-083 Examine the Angle Gearbox Support

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

    3. SUBTASK 72-60-32-330-062 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.

    4. SUBTASK 72-60-32-350-072 Install the Bushing

    1. Refer to Figure.

    2. CAUTION

      MAKE SURE THAT THE LEAD IN CHAMFER OF THE BUSHING POINTS AWAY FROM THE DRIFT.

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

      3. 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 decrease 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).

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

      1. Use protective gloves.

      5. CAUTION

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

        Install the bushing into machined seat.

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

    6. Let the parts get the ambient temperature.

    7. Remove the drift.

    5. SUBTASK 72-60-32-320-066 Machine the Inner Diameter of the Bushing

    1. Refer to Figure.

      2. Machine the inner diameter of the 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 E.

      3. Deleted.

    6. SUBTASK 72-60-32-330-063 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.

    7. SUBTASK 72-60-22-350-073 Identify the Repair

      1. Make a mark VRS5123 adjacent to the part number.

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

    8. 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:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Part Number:4L0007
Part Name:BUSHING
Manufacturer Code:0AM53
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: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