TASK 72-50-53-300-058 Turbine Exhaust Case (TEC) - Chromium Plate The Bearing Bore, Repair-058 (VRS3113)

DMC:V2500-A0-72-50-5301-05A-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 72-50-53-300-058 Turbine Exhaust Case (TEC) - Chromium Plate The Bearing Bore, Repair-058 (VRS3113)

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

PART IDENT

SYMBOL

MATERIAL

Turbine Exhaust Case

-

AMS 5354 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 72-50-53-320-103 Machine the Diameter of the Bearing Bore

    1. Refer to Figure and Figure.

      2. If there is chromium plate.

      1. Remove the chromium plate that is on the part by the SPM TASK 70-33-02-100-501. If chromium plate is not removed fully by the SPM TASK 70-33-02-100-501, then you do a grind operation to remove the chromium plate.

      3. If there is no chromium plate, machine the diameter of the bearing bore before chromium plate.

      1. Machine the bearing bore to remove wear and damage.

        Keep material removal to a minimum so the plating will be 0.002 to 0.008 in. (0.051 to 0.203 mm) thick after finish machining.

    2. SUBTASK 72-50-53-110-194 Clean the Turbine Exhaust Case

      1. Clean the turbine exhaust case.

      1. Refer to the SPM TASK 70-11-03-300-503.

    3. SUBTASK 72-50-53-230-092 Examine the Turbine Exhaust Case

      1. If you did grind operation to remove chromium plate then you do a local fluorescent penetrant inspection of the repair area.

      1. Refer to the SPM TASK 70-23-05-230-501.

        Use medium sensitivity, water washable. No cracks are permitted.

    4. SUBTASK 72-50-53-110-195 Clean the Repair Area of Turbine Exhaust Case

      1. Clean the repair area locally.

      1. Refer to the SPM TASK 70-11-26-300-503.

    5. SUBTASK 72-50-53-330-067 Shot Peen the Turbine Exhaust Case

      1. Shot peen the surface to be plated.

      1. Refer to the SPM TASK 70-33-02-100-501.

        NOTE

        The shot peen procedure is optional. Parts that are shot peened do not have to be baked.

    6. SUBTASK 72-50-53-330-068 Chromium Plate the Bearing Bore of the Turbine Exhaust Case

    1. Refer to Figure and Figure.

      2. Apply a mask to the areas not to be plated.

      1. Refer to the SPM TASK 70-38-24-300-503.

      3. Chromium plate the bearing bore.

      1. Refer to the SPM TASK 70-33-02-100-501.

        Apply the plating to a sufficient thickness to permit finish machining.

        NOTE

        Plating outside the designated area is permitted but must be removed.

    4. Remove the mask.

    7. SUBTASK 72-50-53-370-075 Bake the Turbine Exhaust Case after Chromium Plate

      1. Bake after chromium plate.

      1. Refer to the SPM TASK 70-33-02-100-501.

        This procedure can be omitted if you have shot peened the case.

    8. SUBTASK 72-50-53-220-275 Examine the Turbine Exhaust Case

      1. Do a visual inspection of the plate for finish and bond.

      1. Refer to the SPM TASK 70-33-02-220-502.

    9. SUBTASK 72-50-53-320-104 Grind the Bearing Bore after Chromium Plate

    1. Refer to Figure and Figure.

      2. Do a grind operation of the bearing bore after chromium plate.

      1. The diameter must be 5.521 to 5.523 in. (140.234 to 140.284 mm).

    10. SUBTASK 72-50-53-110-196 Clean the Turbine Exhaust Case

      1. Clean the turbine exhaust case.

      1. Refer to the SPM TASK 70-11-03-300-503.

    11. SUBTASK 72-50-53-220-203 Examine the Repair

      1. Visually examine the plated area for cracks and plating that is not attached to the base metal.

      1. Refer to the SPM TASK 70-33-02-220-502.

    12. SUBTASK 72-50-53-350-222 Identify the Repair

      1. Mark VRS3113 on the repaired turbine exhaust case adjacent to the part number.

      1. Make a permanent mark by the procedure given in the SPM TASK 70-09-00-400-501. Use vibration peen procedure. Remove high material caused by marking the number.

    13. 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