TASK 72-44-20-300-035 HPT Stage 1 Vane - Rear Foot Plasma Spray Repair, Repair-035 (VRS3608)

DMC:V2500-A0-72-44-2000-07A-609A-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 72-44-20-300-035 HPT Stage 1 Vane - Rear Foot Plasma Spray Repair, Repair-035 (VRS3608)

Effectivity

FIG/ITEM

PART NO.

01-240

2A5591

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 72-44-20-320-060 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.

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

      1. Refer to Figure. Remove material until the foot thickness is 0.155 inch (3.937 mm) minimum. Hold to maximum.

      2. 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 72-44-20-340-057 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. Apply coating to a thickness of 0.020 inch (0.508 mm).

    3. SUBTASK 72-44-20-320-061 Machine the Rear Foot of the Stage 1 HPT Vane Assembly after Plasma Spray

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

        1. Refer to Figure. Machine the foot to a thickness of 0.170 to 0.176 inch (4.318 - 4.470 mm).

        1. The minimum thickness of the coating after machining is 0.003 inch (0.076 mm). Break the edges 0.015 to 0.025 inch (0.38 - 0.64 mm).

    4. SUBTASK 72-44-20-220-095 Examine the Repair

      1. Examine the repair.

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

    5. Figure: Stage 1 HPT vane assembly outer diameter rear foot plasma spray repair (PN 2A5591)

    Stage 1 HPT vane assembly outer diameter rear foot plasma spray repair (PN 2A5591)

Requirements After Job Completion

Follow-On Conditions

NONE
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