TASK 72-50-53-300-082 Turbine Exhaust Case (TEC) - Repair The Oil Jet Mating Diameter With A Bushing, Repair-082 (VRS3744)

DMC:V2500-A0-72-50-5301-01A-664A-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 72-50-53-300-082 Turbine Exhaust Case (TEC) - Repair The Oil Jet Mating Diameter With A Bushing, Repair-082 (VRS3744)

Effectivity

FIG/ITEM PART NO.

21-300

2A1209-01

21-300

2A2620-01

21-300

2A3111-01

21-300

2A3183-01

21-300

2A3455-01

21-300

2A3183-101

21-300

2A4258-01

21-300

2A4263-01

Material of component

DESCRIPTION SYMBOL MATERIAL

Turbine exhaust case

AMS 5616 stainless steel

General

Price and availability - refer to IAE

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

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-53-320-160 Machine the Oil Jet Mating Diameter

    1. Refer to Figure.

    2. Machine the oil jet mating diameter so you can install a bushing.

    2. SUBTASK 72-50-53-230-135 Examine the Turbine Exhaust Case

      1. Fluorescent penetrant inspect the surface you machined.

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

        No cracks are permitted.

    3. SUBTASK 72-50-53-320-161 Make the Bushing Locally for the Oil Jet Mating Diameter

    1. Refer to Figure.

      2. Machine a bushing with AMS 5616 stainless steel.

      1. Break the edges of the bushing to 0.003 to 0.015 in. (0.076 to 0.381 mm).

    4. SUBTASK 72-50-53-370-094 Heat Treat the Bushing

      1. Austenize the bushing.

      1. Make the bushing cool at a rate equal to or faster than qir cool.

        Refer to the SPM TASK 70-37-28-370-501.

      2. Temper the bushing.

      1. Refer to the SPM TASK 70-37-28-370-501.

        Hardness must be Rockwell C30-35 after heat treat.

    5. SUBTASK 72-50-53-370-095 Machine the Outside Diameter of the Bushing

    1. Refer to Figure.

      2. Machine the bushing OD.

      1. Make a 0.001 to 0.0025 in. (0.025 to 0.064 mm) tight fit with the hole you machined in the turbine exhaust case.

    6. SUBTASK 72-50-53-110-183 Clean the Turbine Exhaust Case and the Bushing

      1. Clean the case and bushing.

      1. Refer to the SPM TASK 70-11-03-110-503.

    7. SUBTASK 72-50-53-370-096 Install the Bushing into the Oil Jet Mating Diameter

    1. Refer to Figure and Figure.

      2. Install the bushing into the oil jet mating diameter.

      1. Make bushing cold to minus 110 deg F (minus 78.9 deg C). If necessary, heat the case to 125 deg F (51.7 deg C).

    3. Press the bushing into the mating diameter.

    4. Make a chamfer on the mating diameter.

      5. Break the sharp edges on the bushing.

      1. Break to 0.003 to 0.015 in. (0.08 to 0.38 mm).

    8. SUBTASK 72-50-53-110-184 Clean the Repaired Area

      1. Clean the repaired area.

      1. Refer to the SPM TASK 70-11-03-110-503.

    9. SUBTASK 72-50-53-220-248 Examine the Turbine Exhaust Case

      1. Examine the case after repair.

      1. Refer to TASK 72-50-53-200-000 (INSPECTION/CHECK-000).

    10. Figure: Repair Details and Dimensions

    Repair Details and Dimensions

    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