TASK 72-50-53-300-089 Turbine Exhaust Case (TEC) - Nickel Plate The Seal Housing Bore, Repair-089 (VRS3854)

DMC:V2500-A0-72-50-5301-12A-647A-C|Issue No:001.00|Issue Date:2019-08-01

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 72-50-53-300-089 Turbine Exhaust Case (TEC) - Nickel Plate The Seal Housing Bore, Repair-089 (VRS3854)

Effectivity

FIG/ITEM

PART NO.

21-300

2A1209-01

21-300

2A2620-01

21-300

2A3111-01

21-300

2A3183-01

21-300

2A3183-101

21-300

2A3455-01

21-300

2A4258-01

21-300

2A4263-01

Material of component

PART IDENT

SYMBOL

MATERIAL

Turbine Exhaust Case

-

AMS 5616 stainless steel

Preliminary Requirements

Pre-Conditions

Action/ConditionData Module/Technical Publication
Make sure that all the cleaning and inspection procedures are done before this repair.

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-53-220-284 Visually Inspect the Part Markings

    1. Visually inspect the part markings for evidence of previous repair.

    2. If the part is marked with VRS3112, refer to Repair, VRS3112 TASK 72-50-53-300-060 (REPAIR-060) for chromium plate removal instructions before proceeding with this repair.

    3. If the part is marked with VRS3755, refer to Repair, VRS3755 TASK 72-50-53-300-084 (REPAIR-084) for coating removal instructions before proceeding with this repair.

    4. If the part is marked with VRS3854 or has no VRS markings, proceed with Step of this repair.

    2. SUBTASK 72-50-53-380-065 Prepare the Seal Housing Bore Diameter for Nickel Plating

    1. Refer to Figure or Figure.

      2. If there is nickel plate do one or more of the following:

      1. Remove the nickel plate by SPM TASK 70-33-06-300-503.

        2. Machine to remove the nickel plate to the limits of Figure or Figure.

        1. Keep material removal to a minimum.

      3. If there is no nickel plate, machine the bore.

        1. Machine the seal housing bore to remove wear and damage to the limits of Figure or Figure.

        1. Keep material removal to a minimum.

    3. SUBTASK 72-50-53-110-214 Clean the Turbine Exhaust Case

      1. Clean the Turbine Exhaust Case.

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

    4. SUBTASK 72-50-53-220-285 Examine the Turbine Exhaust Case

      1. Refer to Figure or Figure.

      1. Dimensionally inspect the seal housing bore.

    5. SUBTASK 72-50-53-380-066 Apply a Mask to the Turbine Exhaust Case

    1. Refer to Figure or Figure.

    2. Apply a mask to the areas of the turbine exhaust case that are not to be plated.

    3. Refer to SPM TASK 70-38-24-300-503.

    6. SUBTASK 72-50-53-330-071 Nickel Plate the Seal Housing Bore

    1. Refer to Figure or Figure.

      2. Nickel Plate the seal housing bore by one of the following methods:

        1. Refer to SPM TASK 70-33-06-300-503, Nickel Plating.

        1. Part is a steel alloy. Hardness is between HRC 25 and HRC 40.

        2. Part cannot be damaged if heated to 375 deg F (191 deg C).

        3. Apply the plating to a sufficient thickness to allow for finish machining.

        4. Plating outside the repair area is permitted but must be removed.

        2. Refer to SPM TASK 70-33-28-300-503, Brush Nickel Plating.

        1. Treat as a 400 series stainless steel alloy. Hardness is between HRC 25 and HRC 40.

        2. Part cannot be damaged if heated to 375 deg F.

        3. Apply the plating to a sufficient thickness to allow for finish machining.

        4. Plating outside the repair area is permitted but must be removed.

    7. SUBTASK 72-50-53-320-175 Finish the Seal Housing Bore After Nickel Plate

      1. Machine the seal housing bore to the finish dimensions.

      1. Refer to Figure or Figure.

      2. Final plating thickness must be 0.002 in. - 0.0145 in. (0.051 mm - 0.3683 mm).

    8. SUBTASK 72-50-53-110-215 Clean the Turbine Exhaust Case

      1. Clean the turbine exhaust case.

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

    9. SUBTASK 72-50-53-350-225 Identify the Repair

      1. Vibration peen VRS3854 on the repaired case adjacent to the part number.

        1. Make a permanent mark by the procedure given in SPM TASK 70-09-00-400-501.

        1. Remove high material caused by marking the number.

    10. Figure: PN 2A1209-01 Only

    PN 2A1209-01 Only

    PN 2A1209-01 Only

    Figure: PN's 2A2620-01, 2A3111-01, 2A3183-01, 2A3183-101, 2A3455-01, 2A4258-01, 2A4263-01

    PN's 2A2620-01, 2A3111-01, 2A3183-01, 2A3183-101, 2A3455-01, 2A4258-01, 2A4263-01

    PN's 2A2620-01, 2A3111-01, 2A3183-01, 2A3183-101, 2A3455-01, 2A4258-01, 2A4263-01

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Added new repair. (17VC496)