TASK 72-41-21-200-002-D00 HPC Stage 8 Rotor Path Ring - Examine, Inspection-002

DMC:V2500-A0-72-41-2122-00D-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 72-41-21-200-002-D00 HPC Stage 8 Rotor Path Ring - Examine, Inspection-002

Effectivity

FIG/ITEM PART NO.

03-600

6A5996

03-600

6A7625

General

This TASK gives the procedure for the inspection of the stage 8 rotor path ring.

Fig/item numbers 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,

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 72-41-21-230-234 Examine the Stage 8 Rotor Path Ring for Cracks

    1. Clean the parts. 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

        Stage 8 rotor path ring

        SPM TASK

        1. Cracked

        1. Reject

    2. SUBTASK 72-41-21-220-476-A00 Examine the Stage 8 Rotor Path Ring Lining at Location 1051 (6A5996 only)

    1. Refer to Figure.

      2. Scored.

        1. Not more than 0.005 in. (0.13 mm) in depth

        1. Accept

        2. More than in step 2.B.(1)

        1. Incorporate SBE 72-0369

      3. Chipped

      1. Incorporate SBE 72-0369

      4. Wear.

        1. If the lining radius is between 10.3270 to 10.3310 in. (262.306 to 262.407 mm)

        1. Accept

        2. If the lining radius is more than in step 2.D.(1)

        1. Incorporate SBE 72-0369

    3. SUBTASK 72-41-21-220-476-B00 Examine the Stage 8 Rotor Path Ring Lining at Location 1051 (6A7625 only)

    1. Refer to Figure.

      2. Scored.

        1. Not more than 0.005 in. (0.13 mm) in depth

        1. Accept

        2. More than in step 3.B.(1)

        1. Repair VRS6663, TASK 72-41-21-300-092 (REPAIR-092)

      3. Chipped

      1. Repair VRS6663, TASK 72-41-21-300-092 (REPAIR-092)

      4. Wear.

        1. If the lining radius is between 10.3270 to 10.3310 in. (262.306 to 262.407 mm)

        1. Accept

        2. If the lining radius is more than in step 3.D.(1)

        1. Repair VRS6663, TASK 72-41-21-300-092 (REPAIR-092)

    4. SUBTASK 72-41-21-220-638 Examine the Stage 8 Rotor Path Ring Faces at Locations 1, 2, 1103 and 1179

    1. Refer to Figure.

      2. Galled.

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

        1. Accept

        2. More than in 4.B.(1)

        1. Repair VRS6094, TASK 72-41-21-300-007 (REPAIR-007)

      3. Scored.

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

        1. Accept

        2. More than in 4.C.(1)

        1. Repair VRS6094, TASK 72-41-21-300-007 (REPAIR-007)

      4. Location 1103.

        1. If the diameter is between 21.351 and 21.354 in. (542.32 and 542.40 mm)

        1. Accept

        2. Less than in step 4.D.(1)

        1. Reject

      5. Location 1179.

        1. If the diameter is between 21.3512 and 21.3543 in. (542.320 and 542.400 mm)

        1. Accept

        2. Less than in step 4.E.(1)

        1. Reject

    5. SUBTASK 72-41-21-220-639 Examine the Stage 8 Rotor Path Ring Bolt Holes at Location 4

    1. Refer to Figure.

      2. Burred edges.

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

        1. Accept

        2. More than in step 5.B.(1)

        1. Repair, VRS6094 TASK 72-41-21-300-007 (REPAIR-007)

      3. Scratched.

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

        1. Accept

        2. More than in step 5.C.(1)

        1. Repair, VRS6094 TASK 72-41-21-300-007 (REPAIR-007)

    6. SUBTASK 72-41-21-220-640 Examine the Stage 8 Rotor Path Ring Grooves at Location 1124

    1. Refer to Figure.

      2. Scored.

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

        1. Accept

        2. More than in step 6.B.(1)

        1. Reject

      3. Galled.

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

        1. Accept

        2. More than in step 6.C.(1)

        1. Reject

      4. Location 1124.

        1. If the width of the groove is between 0.1154 to 0.1173in. (2.93 to 2.98 mm)

        1. Accept

        2. If the width of the groove is more than in step 6.D.(1)

        1. Reject

    7. SUBTASK 72-41-21-220-641 Examine the Stage 8 Rotor Path Ring Location Dowel Hole at Location 1189

    1. Refer to Figure.

      2. Burred edges

      1. Reject

      3. Scratched

      1. Reject

        2. Location dowel hole diameter 1189.

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

          1. Accept

          2. If the diameter is more than in step 7.C.(2).(a)

          1. Reject

    8. SUBTASK 72-41-21-220-642 Examine the Stage 8 Rotor Path Ring Surface Protection

      1. Damaged

      1. Repair, VRS6146 TASK 72-41-21-300-059 (REPAIR-059)

    9. SUBTASK 72-41-21-220-643 Examine the Stage 8 Rotor Path Ring All Remaining Surfaces

      1. Nicked, dented and scratched.

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

        1. Accept

        2. More than in step 9.A.(1)

        1. Repair, VRS6094 TASK 72-41-21-300-007 (REPAIR-007)

    10. Figure: Stage 8 rotor path ring - Inspection locations

    Stage 8 rotor path ring - Inspection locations

Requirements After Job Completion

Follow-On Conditions

NONE