TASK 72-41-21-200-008-A00 HPC Stage 9 Rotor Path Ring - Examine, Inspection-008

DMC:V2500-A0-72-41-2124-00A-300A-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 72-41-21-200-008-A00 HPC Stage 9 Rotor Path Ring - Examine, Inspection-008

Effectivity

FIG/ITEM PART NO.

03-750

6A3653

General

This TASK gives the procedure for the inspection of the stage 9 rotor path ring. For the other parts of the HP compressor ring cases, refer to TASK 72-41-21-200-000 (INSPECTION-000).

Fig/item number in parentheses in the procedure agree with those used in the IPC. Only the primary Fig/item numbers are used. For the service bulletin alpha variant refer to the IPC.

The policy that is necessary for inspection is given in the SPM TASK 70-20-01-200-501.

All the parts must be cleaned before any part is examined.

All the parts must be visually examined for damage, corrosion and wear. Any defects that are not identified in the procedure must be referred to IAE.

The procedure for the parts which must have a crack test is given in Step. Do the crack test before a part is visually examined.

Do not discard any part until you are sure there are no repairs available. Refer to the instructions in repair before a discarded part is used again or oversize parts are installed.

Parts which should be discarded can be held although no repair is available. The repair of a discarded part can be shown to be necessary at a subsequent date.

All the parts must be examined to make sure that all the repairs have been completed satisfactorily.

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

References

Refer to the SPM for data on these items:

Definition of Damage, SPM TASK 70-02-02-350-501,

Record and Control of the Lives of Parts, SPM TASK 70-05-00-220-501,

Inspection of Parts, SPM TASK 70-20-01-200-501.

Some data on these items are contained in this TASK. For more data on these items refer to the SPM:

Methods of Testing for Crack Indications,

Chemical Processes,

Surface Protection.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-21-230-059 Examine the Stage 9 Rotor Path Ring for Cracks

      1. Clean the parts.

      1. Refer to TASK 72-41-21-100-000 (CLEANING-000)

        2. Do the test for cracks on the part that is given below:

          PART IDENT TASK/SUBTASK

          TASK

          Stage 9 rotor path ring

          1. Cracked

          1. Reject

    2. SUBTASK 72-41-21-220-099 Examine the Stage 9 Rotor Path Ring Lining at Location 1052

    1. Refer to Figure.

      2. Scored.

        1. Up to 0.005in. (0.13 mm) in depth

        1. Accept

        2. More than (1)

        1. Repair, VRS6021 TASK 72-41-21-300-012 (REPAIR-012)

      3. Chipped.

      1. Repair, VRS6021 TASK 72-41-21-300-012 (REPAIR-012)

      4. Worn.

        1. If the lining radius is between 10.2390 and 10.2430in. (260.07 and 260.17 mm)

        1. Accept

        2. More than 10.243in. (260.17 mm)

        1. Repair, VRS6021 TASK 72-41-21-300-012 (REPAIR-012)

    3. SUBTASK 72-41-21-220-100 Examine the Stage 9 Rotor Path Ring Faces at Locations 1, 2, 1177 and 1178

    1. Refer to Figure.

      2. Location 1, 2, 1177 and 1178.

        1. Galled/Scored.

          1. Not more than 0.002 in. (0.05 mm) in depth

          1. Accept

          2. More than in (a)

          1. Repair VRS6096, TASK 72-41-21-300-011 (REPAIR-011)

      3. Location 1177 and 1178.

        1. Worn.

          1. If the diameter is between 21.1574 and 21.1606 in. (537.400 and 537.480 mm)

          1. Accept

          2. Less than in (a)

          1. Reject

    4. SUBTASK 72-41-21-220-101 Examine the Stage 9 Rotor Path Ring Bolt Holes at Location 3

    1. Refer to Figure.

      2. Burred edges or scratched.

        1. Up to 0.002in. (0.05 mm) in depth

        1. Accept

        2. More than (1)

        1. Repair, VRS6096 TASK 72-41-21-300-011 (REPAIR-011)

    5. SUBTASK 72-41-21-220-102 Examine the Stage 9 Rotor Path Ring Grooves at Locations 1126 and 1129

    1. Refer to Figure.

      2. Location 1126 and 1129.

        1. Scored or galled.

          1. Up to 0.002in. (0.05 mm) in depth

          1. Accept

          2. More than (a)

          1. Reject

      3. Location 1126.

        1. Worn.

          1. If the width of the groove is between 0.1350 and 0.1370in. (3.43 and 3.48 mm)

          1. Accept

          2. If more than (a)

          1. Reject

      4. Location 1129.

        1. Worn.

          1. If the width of the groove is between 0.115 and 0.117in. (2.93 and 2.98 mm)

          1. Accept

          2. If more than (a)

          1. Reject

    6. SUBTASK 72-41-21-220-103 Examine the Stage 9 Rotor Path Ring Location Dowel Hole at Location 1192

    1. Refer to Figure.

      2. Burred edges or scratched.

      1. Reject

        2. Worn.

          1. If the diameter is between 0.315 and 0.329in. (8.00 and 8.36 mm)

          1. Accept

          2. If the more than (1)

          1. Reject

    7. SUBTASK 72-41-21-220-627 Examine the Stage 9 Rotor Path Ring All Remaining Surfaces

      1. Nicked, dented or scratched.

        1. Up to 0.002in. (0.05 mm) in depth

        1. Accept

        2. More than (1)

        1. Repair, VRS6096 TASK 72-41-21-300-011 (REPAIR-011)

    8. Figure: Stage 9 rotor path ring - inspection locations

    Stage 9 rotor path ring - inspection locations

Requirements After Job Completion

Follow-On Conditions

NONE