TASK 72-50-41-300-006 LPT Shaft - Apply Nickel Plating, Repair-006 (VRS1496)

DMC:V2500-A0-72-50-4101-02A-647A-C|Issue No:002.00|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 72-50-41-300-006 LPT Shaft - Apply Nickel Plating, Repair-006 (VRS1496)

Effectivity

FIG/ITEM

PART NO.

01-200

5A0149

01-200

5A0864

01-200

5A0892

01-200

5A6147

01-200

5A1732

01-200

5A1762

Material of component

PART IDENT

SYMBOL

MATERIAL

LP turbine shaft

Non-corrosion resistant steel

General

Price and availability - none

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

NOTE

To identify the consumable materials refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Grinding machineLOCALGrinding machine
Nickel plate equipmentLOCALNickel plate equipment
Magnetic particle inspection equipmentLOCALMagnetic particle inspection equipment
Vibrating marking pencilLOCALVibrating marking pencil

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 01-050 SULFURIC ACID H2SO4LOCALCoMat 01-050
CoMat 01-081 ELECTROPLATING SOLUTIONLOCALCoMat 01-081

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-41-350-059 Clean the LP Turbine Shaft

      1. Clean the part.

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

    2. SUBTASK 72-50-41-330-052 Machine Worn Diameter D1

      NOTE

      If surface has been previously repaired using nickel plate, remove old plating completely.

    1. Refer to: Figure

      2. Grind off damaged diameter to 8.9933 to 8.9816 in. (228.432 to 228.132 mm). Keep material removal to a minimum.

      1. Hold D1 to a minimum value, but any previous coating and damage must be completely removed.

    3. SUBTASK 72-50-41-370-051 Stress Relieve the LP Turbine Shaft

      1. Heat treat the part for one hour at 374 to 410 deg F (190 to 210 deg C).

      1. Refer to the SPM TASK 70-33-05-300-503.

    4. SUBTASK 72-50-41-240-058 Examine the LP Turbine Shaft for Cracks

      1. Magnetic particle test the part.

      1. Refer to TASK 72-50-41-200-003 (INSPECTION/CHECK-003) SUBTASK 72-50-41-240-052.

      2. Clean the part.

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

    5. SUBTASK 72-50-41-330-053 Prepare the LP Turbine Shaft for Plating

      1. Wire-up the part.

      1. Refer to the SPM TASK 70-33-05-300-503.

      2. Clean the part.

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

      3. Apply stopping-off compound to areas to be left unplated.

      1. Refer to the SPM TASK 70-33-05-300-503.

    6. SUBTASK 72-50-41-380-065 Etch the LP Turbine Shaft before Plating

      1. Etch and wash the part using sulphuric acid 69.50 to 80.10 oz/gal (520 to 600 g/l).

    7. SUBTASK 72-50-41-330-054 Nickel Chloride Strike the LP Turbine Shaft

      1. Immediately after etch and washing, nickel chloride strike the part.

      1. Refer to the SPM TASK 70-33-05-300-503.

      2. Wash the part in water.

      1. Refer to the SPM TASK 70-33-05-300-503.

    8. SUBTASK 72-50-41-330-067 Nickel Plate the LP Turbine Shaft

      NOTE

      This Step is an alternative to Step.

      1. Nickel plate the part using sulphate nickel for sufficient time to achieve the diameter 8.968 in. (227.80 mm) maximum.

    9. SUBTASK 72-50-41-330-068 Nickel Plate the LP Turbine Shaft

      NOTE

      This Step is an alternative to Step.

      1. Nickel plate the part using sulphate nickel (solution B) for sufficient time to achieve the diameter 8.968 in. (227.80 mm) maximum.

      1. Refer to the SPM TASK 70-33-05-300-003.

    10. SUBTASK 72-50-41-370-052 De-Embrittle the LP Turbine Shaft

      1. Give a de-embrittlement treatment as soon as possible after plating. Heat treat the part at 374 to 410 deg F (190 to 210 deg C) for 3 hours.

      1. Refer to the SPM TASK 70-33-05-300-503.

    11. SUBTASK 72-50-41-220-084 Examine the LP Turbine Shaft after Plating

    1. Refer to: Figure

      2. Visually examine the nickel deposit.

      1. Refer to TASK 72-50-41-200-000 (INSPECTION/CHECK-000).

        Refer to the SPM TASK 70-33-05-300-503.

    3. Dimension check the plated area for diameter 8.968 in. (227.80 mm) maximum.

    12. SUBTASK 72-50-41-320-051 Grind the LP Turbine Shaft after Plating

    1. Refer to: Figure

      2. Grind the plated area by normal grinding wheel to specified dimensions.

      1. Refer to the SPM TASK 70-33-05-300-503.

    13. SUBTASK 72-50-41-230-054 Examine the LP Turbine Shaft after Grinding

    1. Refer to: Figure

      2. Visually examine the ground area for pitting, flaking and excessive roughness.

      1. Refer to TASK 72-50-41-200-003 (INSPECTION/CHECK-003).

    3. Dimensional check the ground area.

    14. SUBTASK 72-50-41-380-054 Mark Repair Number on the LP Turbine Shaft

      1. Write VRS1496 adjacent to part number.

      1. Use vibrating marking pencil.

    15. Figure: Apply nickel plating - LP Turbine Shaft

    Apply nickel plating - LP Turbine Shaft

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Editorial correction due to conversion

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Supply Number:CoMat 01-050
Type:sp01
Supply Short Name:CoMat 01-050 SULFURIC ACID H2SO4
Supply Name:CoMat 01-050 SULFURIC ACID H2SO4
Specification Groups:
Doc NumberType
OMAT: 110 (RR REF)COMMERCIAL GRADE S.G. 1.84 B.S.753 O-S-809 TY1CL1
MTH 165 (MTU REF)COMMERCIAL GRADE S.G. 1.84 B.S.753 O-S-809 TY1CL1
Suppliers:
ManufacturerRemarks
LOCAL
K6835
70657
Manufacturer Code:LOCAL
Supply Number:CoMat 01-081
Type:sp01
Supply Short Name:CoMat 01-081 ELECTROPLATING SOLUTION
Supply Name:CoMat 01-081 ELECTROPLATING SOLUTION
Specification Groups:
Doc NumberType
0MAT: 1/76 (RR REF)CANNINGS NI-SULPH. CONC. 64% 4152425
Suppliers:
ManufacturerRemarks
LOCAL
K6835
IE322
Link not Found
Manufacturer Code:LOCAL
Tool Number:Magnetic particle inspection equipment
Tool Name:Magnetic particle inspection equipment
Link not Found
Link not Found