TASK 72-41-21-300-069 HPC Heatshields - Replace Loose Or Damaged Rivets And/or A Damaged Plate On The Stage 7 Rear Heatshield, Repair-069 (VRS6308)

DMC:V2500-A0-72-41-2140-01A-652A-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 72-41-21-300-069 HPC Heatshields - Replace Loose Or Damaged Rivets And/or A Damaged Plate On The Stage 7 Rear Heatshield, Repair-069 (VRS6308)

Effectivity

FIG/ITEM PART NO.

03 880

6A3028

03 880

6A3993

03 880

6A4259

Material of component

DESCRIPTION SYMBOL MATERIAL

HP Compressor Rear

EAK

Modified 12 percent

Heatshield, Stage 7

Chromium steel

OR

EBL

Modified 12 percent

Chromium steel

OR

EAE

11.5 percent Chromium,

3 percent Nickel,

1.75 percent Molybdenum

and 1.5 percent Cobalt

Plate

EBQ

11 percent Chromium and

1 percent Molybdenum

Rivet, solid

QBE )

Nimonic 75

or

QPK )

Nimonic 75

General

This Repair must only be done when the instruction to do so is given in 72-41-21 Inspection.

This Repair replaces loose or damaged rivets and/or a damaged plate, on the HP Compressor, stage 7, rear heatshield.

When loose or damaged rivet(s) are to be replaced do Step.

When a damaged plate is to be replaced do Step.

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

Price and Availability

Refer to International Aero Engines

Related repairs

HP Compressor Rear Heatshield, Stage 7 - Replace the Surface Protection, refer to TASK 72-41-21-300-073 (VRS6309).

NOTE

Equivalent materials or equipment can be used.
More equipment and materials necessary to do this Repair are in the SPM TASKS given below:
TASK 70-09-00-400-501
TASK 70-11-26-300-503
TASK 70-23-05-230-501
TASK 70-39-03-390-501

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Chemical cleaning equipmentLOCALChemical cleaning equipment
Penetrant Crack Test EquipmentLOCALPenetrant crack test equipment
Vertical drilling machineLOCALVertical drilling machine
Toolmakers clampLOCALToolmakers clamp

or equivalent

Standard workshop equipmentLOCALStandard workshop equipment
Vibrating marking pencilLOCALVibrating marking pencil
Portablegrinding equipmentLOCALPortable grinding equipment

Consumables, Materials and Expendables

NONE

Spares

NameManufacturerPart Number / IdentificationQuantityRemark
Rivet, solid,AS162462

universal head

Rivet, solid,AS162872

universal head

Plate6A56641

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-21-110-153 Clean the Assembly

      1. Chemically clean.

      1. Use chemical cleaning equipment.

    2. SUBTASK 72-41-21-230-174 Do a crack test

      1. Do a penetrant crack test.

      1. Use penetrant crack test equipment.

    3. SUBTASK 72-41-21-323-060 Remove Loose or Damaged Rivet(s)

      NOTE

      The SUBTASKS which follow must only be done to replace loose or damaged rivet(s).

    1. Refer to Figure.

      2. Remove loose or damaged rivet(s).

      1. Use a vertical drilling machine.

    4. SUBTASK 72-41-21-220-420 Examine the Rivet Hole(s).

    1. Refer to Figure and Figure.

      2. Visually examine and measure the diameter of the rivet hole(s).

      1. Mark damaged rivet hole(s).

    5. SUBTASK 72-41-21-323-061 Drill the Plate and Rivet Hole(s)

      NOTE

      Only do this SUBTASK if the larger rivet(s) is/are to be installed.

    1. Refer to Figure and Figure.

      2. Drill the plate and the damaged rivet hole(s) to suit the larger rivet(s), as necessary.

      1. If the two rivets have been removed safety the plate to the heatshield with a toolmakers clamp or equivalent.

      2. Use a vertical drilling machine.

        NOTE

        If the two holes are to be machined for the larger rivet, then access to one hole after the other may not be possible because of the position of the toolmakers clamp, or equivalent, on the plate and the heatshield. If this occurs do Step, Step, Step, Step and Step for the first hole, then do these SUBTASKS again for the other hole.

      3. Remove sharp edges.

      1. Use standard workshop equipment.

    6. SUBTASK 72-41-21-110-154 Chemically clean

      1. Chemically clean the plate and around the rivet hole(s).

      1. Refer to the SPM TASK 70-11-26-300-503.

    7. SUBTASK 72-41-21-230-175 Do a Crack Test

      1. Do a local penetrant crack test on the plate and around the rivet hole(s).

      1. Refer to the SPM TASK 70-23-05-230-501. Cracks are not permitted.

    8. SUBTASK 72-41-21-350-156 Install the Rivet(s)

    1. Refer to Figure and Figure.

      2. Install the rivet(s) into the heatshield and plate.

      1. Use AS16246 , 2 off, 03-888 and/or AS16287 , 2 off, 03-889 as necessary.

      2. Use standard workshop equipment.

    9. SUBTASK 72-41-21-390-059 Safety the Rivet(s) in Place

    1. Refer to Figure and Figure.

      2. Cold squeeze the rivet(s) in place.

      1. Refer to the SPM TASK 70-39-03-390-501.

      2. Use standard workshop equipment.

    10. SUBTASK 72-41-21-110-155 Chemically clean

      1. Chemically clean the rivet heads and plate.

      1. Refer to the SPM TASK 70-11-26-300-503.

    11. SUBTASK 72-41-21-230-176 Do a Crack Test

      1. Do a local penetrant crack test on the rivet heads and plate.

      1. Refer to the SPM TASK 70-23-05-230-501 Cracks are not permitted.

    12. SUBTASK 72-41-21-350-157 Identify the Repair

      1. Mark VRS6308/1 adjacent to the part number when loose or damaged rivet(s) is/are replaced.

      1. Refer to SPM TASK :ej141.70-09-00-400-501:ej141. SUBTASK 70-09-00-400-001. Use vibro-engraving equipment.

    13. SUBTASK 72-41-21-380-105 Apply the Surface Protection

      1. Apply the surface protection to the HP compressor rear heatshield, stage 7.

      1. Refer to VRS6309, TASK 72-41-21-300-073.

    14. SUBTASK 72-41-21-350-158 Remove the Damaged Plate

      NOTE

      The SUBTASKS which follow must only be used to replace the damaged plate.

    1. Refer to Figure.

      2. Release the damaged plate.

      1. Position the heatshield with damaged plate side up. Grind-off the heads of the rivets. Use a portable grinding machine.

      3. Remove the rivets.

      1. Use standard workshop equipment.

    4. Discard the damaged plate.

    15. SUBTASK 72-41-21-220-421 Examine the Rivet Holes

    1. Refer to Figure and Figure.

      2. Visually examine and measure the diameter of the rivet holes.

      1. Mark damaged rivet hole(s).

    16. SUBTASK 72-41-21-323-062 Drill the Plate and Rivet Hole(s)

    1. Refer to Figure and Figure.

      2. Safety the plate to the heatshield.

      1. Use 6A5664 , 1 off, 03-891 with a toolmakers clamp or equivalent.

      3. Drill the plate and the rivet hole(s).

      1. Position the heatshield with plate side down.

        Use a vertical drilling machine.

        NOTE

        Drill the rivet hole(s) to suit the larger rivet, if necessary.
        If a toolmakers clamp or equivalent is used to hold the new plate in position then access to one hole after the other may not be possible. If this occurs do SUBTASK 72-41-21-323-062, SUBTASK 72-41-21-110-156, SUBTASK 72-41-21-230-177, SUBTASK 72-41-21-350-159 and SUBTASK 72-41-21-390-060 for the first hole then do these SUBTASKS again for the other hole.

      4. Remove sharp edges.

      1. Use standard workshop equipment.

    17. SUBTASK 72-41-21-110-156 Chemically clean

      1. Chemically clean the plate and around the rivet holes.

      1. Refer to the SPM TASK 70-11-26-300-503.

    18. SUBTASK 72-41-21-230-177 Do a Crack Test

      1. Do a local penetrant crack test on the plate and around the rivet holes.

      1. Refer to the SPM TASK 70-23-05-230-501. Cracks are not permitted.

    19. SUBTASK 72-41-21-350-159 Install the Rivets.

    1. Refer to Figure and Figure.

      2. Install the rivets into the heatshield and plate.

      1. Use AS16246 , 2 off, 03-888 and/or AS16287 , 2 off, 03-889 as necessary.

      2. Use standard workshop equipment.

    20. SUBTASK 72-41-21-390-060 Safety the Rivets in Place

    1. Refer to Figure and Figure.

      2. Cold squeeze the rivets in place.

      1. Refer to the SPM TASK 70-39-03-390-501.

      2. Use standard workshop equipment.

    21. SUBTASK 72-41-21-110-157 Chemically clean

      1. Chemically clean the rivet heads and plate.

      1. Refer to the SPM TASK 70-11-26-300-503.

    22. SUBTASK 72-41-21-230-178 Do a Crack Test

      1. Do a local penetrant crack test on the rivet heads and plate.

      1. Refer to the SPM TASK 70-23-05-230-501 Cracks are not permitted.

    23. SUBTASK 72-41-21-350-160 Identify the Repair

      1. Mark VRS6308/2 adjacent to the part number when a damaged plate is replaced.

      1. Refer to the SPM TASK 70-09-00-400-501SUBTASK 70-09-00-400-001.

        Use vibro-engraving equipment.

    24. SUBTASK 72-41-21-380-106 Apply the Surface Protection

      1. Apply the surface protection to the HP compressor rear heatshield, stage 7.

      1. Refer to VRS6309, TASK 72-41-21-300-073.

    25. Figure: Repair details and dimensions

    Repair details and dimensions

    Figure: Repair details and dimensions

    Repair details and dimensions

Requirements After Job Completion

Follow-On Conditions

NONE
Link not Found
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Link not Found
Link not Found
Link not Found
Manufacturer Code:LOCAL
Tool Number:Chemical cleaning equipment
Tool Name:Chemical cleaning equipment
Manufacturer Code:LOCAL
Tool Number:Penetrant crack test equipment
Tool Name:Penetrant Crack Test Equipment
Manufacturer Code:LOCAL
Tool Number:Portable grinding equipment
Tool Name:Portablegrinding equipment
Link not Found
Manufacturer Code:LOCAL
Tool Number:Toolmakers clamp
Tool Name:Toolmakers clamp
Manufacturer Code:LOCAL
Tool Number:Vertical drilling machine
Tool Name:Vertical drilling machine
Link not Found