TASK 72-44-20-300-034 HPT Stage 1 Vane - Rear Foot Plasma Spray Repair, Repair-034 (VRS3592)

DMC:V2500-A0-72-44-2000-06A-609A-C|Issue No:003.00|Issue Date:2015-05-01

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 72-44-20-300-034 HPT Stage 1 Vane - Rear Foot Plasma Spray Repair, Repair-034 (VRS3592)

Effectivity

FIG/ITEM

PART NO.

01-240

2A2761

01-240

2A4201

01-240

2A4271

Material of component

PART IDENT

SYMBOL

MATERIAL

Stage 1 HPT Vane Assembly

Cobalt alloy

General

Price and Availability - Refer to IAE.

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

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Portablegrinding equipmentLOCALPortable grinding equipment
Workshop inspection equipmentLOCALWorkshop inspection equipment

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-44-20-320-056 Remove Plasma Spray from the Rear Foot of the Stage 1 HPT Vane Assembly

    1. CAUTION

      KEEP THE CAVITIES OF THE LEADING AND TRAILING EDGES AND THE AIRFOIL SURFACE CLEAN OF GRINDING DEBRIS.

      Refer to Figure, Figure and Figure.

      2. Grind the rear face of the foot to remove any prior plasma spray buildup.

      1. For PN 2A2761 and 2A4201: Remove material until the foot thickness is 0.155 in. (3.94 mm) minimum. Hold to maximum.

      2. For PN 2A4271: Remove material until the foot thickness is 0.221 in. (5.6134 mm) minimum. Hold to maximum.

      3. Record foot thickness after machining.

      3. Visually inspect the repair area to make sure you removed all of the coating.

      1. If you did not remove all of the coating, grind the area again until you remove all of the coating.

    2. SUBTASK 72-44-20-340-055 Plasma Spray the Rear Foot of the Stage 1 HPT Vane Cluster Assembly

      1. Plasma spray the repair area of the rear foot.

        1. Refer to Figure and the SPM TASK 70-34-03-340-501, IAE 53-18 or IAE 271-47.

        1. Apply coating to a thickness of 0.020 inch (0.508 mm).

    3. SUBTASK 72-44-20-320-057 Machine the Rear Foot of the Stage 1 HPT Vane Assembly after Plasma Spray

    1. Refer to Figure, Figure and Figure.

      2. Set up and finish machine the rear foot after plasma.

      1. For PN 2A2761 and 2A4201, refer to Figure. Machine the foot to a thickness of 0.170 to 0.176 in. (4.32 to 4.47 mm).

      2. For PN 2A4271, refer to Figure. Machine the foot to a thickness of 0.231 to 0.241 in. (5.87 to 6.12 mm) and a finished coating thickness of 0.003 to 0.021 in. (0.08 to 0.53 mm). Use the foot thickness recorded at step 4.B. to calculate the final coating thickness.

      3. Break the edges 0.015 to 0.025 in. (0.38 to 0.64 mm).

    4. SUBTASK 72-44-20-220-093 Examine the Repair

      1. Examine the repair.

      1. Refer to TASK 72-44-20-220-078 (INSPECTION-001).

    5. Figure: Repair Details and Dimensions (PN 2A2761 and 2A4201 only)

    Sheet 1

    Legend
    Repair Details and Dimensions (PN 2A2761 and 2A4201 only)

    Sheet 1

    Close

    Figure: Repair Details and Dimensions (PN 2A4271 only)

    Sheet 2

    Legend
    Repair Details and Dimensions (PN 2A4271 only)

    Sheet 2

    Close

    Figure: Repair Details and Dimensions (PN 2A4271 only)

    Sheet 3

    Legend
    Repair Details and Dimensions (PN 2A4271 only)

    Sheet 3

    Close

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised format. (editorial change)

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Tool Number:Portable grinding equipment
Tool Name:Portablegrinding equipment
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment