TASK 72-50-41-300-011 LPT Shaft - Replace The Corrosion Resistant Coating, Repair-011 (VRS1495)

DMC:V2500-A0-72-50-4101-00A-609A-C|Issue No:003.00|Issue Date:2020-05-01

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 72-50-41-300-011 LPT Shaft - Replace The Corrosion Resistant Coating, Repair-011 (VRS1495)

Effectivity

FIG/ITEM

PART NO.

01-200

5A0149

01-200

5A0864

01-200

5A6147

01-200

5A0892

01-200

5A1732

01-200

5A1762

Material of component

PART IDENT

SYMBOL

MATERIAL

LP turbine shaft

Non-corrosion resistant steel

General

Price and availability - not applicable

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
Spray equipmentLOCALSpray equipment
Batch ovenLOCALBatch oven
Vibrating Marking PencilLOCALVibrating Marking Pencil
Glass bead blasting equipmentLOCALGlass bead blasting equipment

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 02-001 ADHESIVE TAPE (MASKING)LOCALCoMat 02-001
CoMat 02-019 TAPE, ADHESIVE PAPER HEAT RESISTING MASKING76381CoMat 02-019
CoMat 05-003 ABRASIVE MEDIUM ALUMINUM OXIDE, 120/220 GRADEX222XCoMat 05-003
CoMat 05-009 GLASS BEADSLOCALCoMat 05-009
CoMat 05-127 ABRASIVE PADLOCALCoMat 05-127
CoMat 07-035 CORROSION RESISTANT COATINGLOCALCoMat 07-035

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-41-110-059 Replace the Corrosion Resistant Coating of the LP Turbine Shaft

      1. Clean the LP turbine shaft.

        1. Remove the corrosion resistant coating from the LP turbine shaft.

        1. Refer to TASK 72-50-41-100-000 (CLEANING-000).

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

        2. Remove the grease.

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

    2. SUBTASK 72-50-41-380-063 Recoat the Corrosion Resistant Coating (Type B). Refer to SPM TASK 70-38-21-380-501

    1. Refer to: Figure and Figure

      2. Mask the area where coating is not applied.

      3. Apply dry abrasive blast to the coating area.

      4. Remove all the abrasive grit.

      1. Remove the masking tape and clean the shaft.

      5. Mask again the area where coating is not applied.

      6. Spray the corrosion resistant coating of Type B.

      1. Refer to SUBTASK 70-38-21-380-007.

        Coating thickness must be between 0.0004 and 0.0015in. (0.010 and 0.040 mm).

    7. Remove the tape.

      8. Heat the shaft.

      1. Use the batch oven.

        Heat the shaft one hour at temperature of 653 to 671 deg F (345 to 355 deg C).

      9. Examine the coating.

      1. Coating must be uniform, free from runs, flaking or blisters and correct thickness of coating has been obtained.

      10. Glass bead blast the inside and outside diameter coated areas of the shaft.

      1. Refer to the SPM TASK 70-12-03-120-501.

        NOTE

        Step can be used as an alternative to glass bead blast for burnishing of the corrosion resistant coating.

      11. Burnish the inside and outside diameter coated areas of the shaft.

    3. SUBTASK 72-50-41-220-090 Examine the LP Turbine Shaft. Refer to SPM TASK 70-38-21-380-501

      1. Visually examine the coating.

      1. The coating has no damage and is the correct thickness.

    2. Examine the coating - (Type B) for electrical conductivity.

    4. SUBTASK 72-50-41-350-062 Mark Repair Number on the Turbine Shaft

      1. Write VRS1495, adjacent to the part number on the LP turbine shaft.

      1. Use the vibrating marking pencil.

        Refer to the SPM TASK 70-09-00-400-501.

    5. Figure: LP Turbine Shaft - Coating Area

    LP Turbine Shaft - Coating Area

    Figure: LP turbine shaft - glass bead blasting and burnishing

    LP turbine shaft - glass bead blasting and burnishing

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Correct step ref (CAS-63930-S9V7N3)

Manufacturer Code:76381
Enterprise Name:3M COMPANY
BU Name:3M COMPANY
Department:3M CENTER
City:ST PAUL
State:MN
Zip Code:55144-1000
Country:USA
Phone Number:1-651-733-1110
Fax Number:1-651-733-9973
Internet:www.mmm.com
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:X222X
Enterprise Name:N/A – REFER TO APPLICABLE COMAT SUFFIX
Manufacturer Code:LOCAL
Supply Number:CoMat 02-001
Type:sp01
Supply Short Name:CoMat 02-001 ADHESIVE TAPE (MASKING)
Supply Name:CoMat 02-001 ADHESIVE TAPE (MASKING)
Specification Groups:
Doc NumberType
OMAT: 230 (RR REF)ZINC OXIDE AT142
JCR-197 (JAEC REF)ZINC OXIDE AT142
Suppliers:
ManufacturerRemarks
LOCAL
K6835
U0415
Manufacturer Code:76381
Supply Number:CoMat 02-019
Type:sp01
Supply Short Name:CoMat 02-019 TAPE, ADHESIVE PAPER HEAT RESISTING MASKING
Supply Name:CoMat 02-019 TAPE, ADHESIVE PAPER HEAT RESISTING MASKING
Specification Groups:
Doc NumberType
OMAT: 2/40 (RR REF)SELLOTAPE 2595 SCAPA 2595 OR 3M HT214
JCR-201 (JAEC REF)SELLOTAPE 2595 SCAPA 2595 OR 3M HT214
Suppliers:
ManufacturerRemarks
76381
K3312
K6835
Manufacturer Code:X222X
Supply Number:CoMat 05-003
Type:sp01
Supply Short Name:CoMat 05-003 ABRASIVE MEDIUM ALUMINUM OXIDE, 120/220 GRADE
Supply Name:CoMat 05-003 ABRASIVE MEDIUM ALUMINUM OXIDE, 120/220 GRADE
Specification Groups:
Doc NumberType
Use one of the CoMat 05-003 letter suffix alternatives.
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:LOCAL
Supply Number:CoMat 05-009
Type:sp01
Supply Short Name:CoMat 05-009 GLASS BEADS
Supply Name:CoMat 05-009 GLASS BEADS
Specification Groups:
Doc NumberType
OMAT: 1/43SIZE NO.13 (0.004-0.0015IN NOMINAL DIA) CSS 8 AH GRADE 0/100 MIL-G-9954
JCR-211SIZE NO.13 (0.004-0.0015IN NOMINAL DIA) CSS 8 AH GRADE 0/100 MIL-G-9954
Suppliers:
ManufacturerRemarks
LOCAL
0GU70
K2769
IE125
K6835
Manufacturer Code:LOCAL
Supply Number:CoMat 05-127
Type:sp01
Supply Short Name:CoMat 05-127 ABRASIVE PAD
Supply Name:CoMat 05-127 ABRASIVE PAD
Specification Groups:
Doc NumberType
OMAT: 584SCOTCH BRITE TYPE NO.7496 MIL-A-9962A TYPE II GRADE B OR C
JCR-257SCOTCH BRITE TYPE NO.7496 MIL-A-9962A TYPE II GRADE B OR C
Suppliers:
ManufacturerRemarks
LOCAL
K0993
K6835
Manufacturer Code:LOCAL
Supply Number:CoMat 07-035
Type:sp01
Supply Short Name:CoMat 07-035 CORROSION RESISTANT COATING
Supply Name:CoMat 07-035 CORROSION RESISTANT COATING
Specification Groups:
Doc NumberType
OMAT:7/46B (RR REF)
JCR-030 (JAEC REF)
IPCOTE 9183 RI
Suppliers:
ManufacturerRemarks
LOCAL
IE200
K3504
00BB6
Manufacturer Code:LOCAL
Tool Number:Batch oven
Tool Name:Batch oven
Manufacturer Code:LOCAL
Tool Number:Glass bead blasting equipment
Tool Name:Glass bead blasting equipment
Manufacturer Code:LOCAL
Tool Number:Spray equipment
Tool Name:Spray equipment
Manufacturer Code:LOCAL
Tool Number:Vibrating Marking Pencil
Tool Name:Vibrating Marking Pencil