TASK 72-41-21-200-014-B00 HPC Stage 12 Rotor Path Ring - Examine, Inspection-014

DMC:V2500-A0-72-41-2130-00B-300A-C|Issue No:003.00|Issue Date:2019-05-01

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 72-41-21-200-014-B00 HPC Stage 12 Rotor Path Ring - Examine, Inspection-014

Effectivity

FIG/ITEM

PART NO.

04-700

6A4166

General

This TASK gives the procedure for the inspection of the stage 12 rotor path ring. For other parts of the HP compressor ring cases, refer to TASK 72-41-21-200-000 (INSPECTION-000).

The policy that is necessary for inspection is given in 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 the 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 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.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-21-230-138 Examine the Stage 12 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 12 rotor path ring

        1. Cracked.

        1. Reject.

    2. SUBTASK 72-41-21-220-324 Examine the Stage 12 Rotor Path Ring Lining at Location 1055

    1. Refer to Figure.

      2. Scored.

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

        1. Accept.

        2. More than in Step.

        1. Repair, VRS6024 TASK 72-41-21-300-022 (REPAIR-022).

      3. Chipped.

      1. Repair, VRS6024 TASK 72-41-21-300-022 (REPAIR-022).

      4. Worn.

        1. If the lining radius is between 10.300 in. to 10.304 in. (261.62 mm to 261.722 mm).

        1. Accept.

        2. More than 10.304 in. (261.722 mm).

        1. Repair, VRS6024 TASK 72-41-21-300-022 (REPAIR-022).

    3. SUBTASK 72-41-21-220-325 Examine the Stage 12 Rotor Path Ring Faces at Locations 1, 2, 4, 1164 and 1167

    1. Refer to Figure.

      2. Galled or scored.

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

        1. Accept.

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

        1. Repair VRS6102, TASK 72-41-21-300-021 (REPAIR-021).

      3. Location 1164.

        1. If the diameter is between 21.3063 in. and 21.3094 in. (541.180 mm and 541.260 mm).

        1. Accept.

        2. Less than in step 3.C.(1).

        1. Reject.

      4. Location 1167.

        1. If the diameter is between 21.4173 in. and 21.4205 in. (544.000 mm and 544.080 mm).

        1. Accept.

        2. Less than in step 3.D.(1).

        1. Reject.

    4. SUBTASK 72-41-21-220-326 Examine the Stage 12 Rotor Path Ring Bolt Holes at Locations 5

    1. Refer to Figure.

      2. Scratched or with barred edges.

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

        1. Accept.

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

        1. Repair, VRS6102 TASK 72-41-21-300-021 (REPAIR-021).

    5. SUBTASK 72-41-21-220-327 Examine the Stage 12 Rotor Path Ring Groove at Location 1141

    1. Refer to Figure.

      2. Scored or galled.

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

        1. Accept.

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

        1. Reject.

      3. Worn.

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

        1. Accept.

        2. More than 0.1370 in. (3.48 mm).

        1. Reject.

    6. SUBTASK 72-41-21-220-328 Examine the Stage 12 Rotor Path Ring Location Dowel Hole at Location 1183

    1. Refer to Figure.

      2. Scratched or with burred edges.

      1. Reject.

        2. Worn.

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

          1. Accept.

          2. More than 0.329 in. (8.36 mm).

          1. Reject.

    7. SUBTASK 72-41-21-220-330 Examine the Dimension A

    1. Refer to Figure.

      2. If the dimension is between 0.159 in. and 0.1606 in. (4.04 mm to 4.080 mm).

      1. Accept.

      3. More than in 7.B.

      1. Repair, VRS6172, TASK 72-41-21-300-086 (REPAIR-086).

    8. SUBTASK 72-41-21-220-331 Examine the Stage 12 Rotor Path Ring All Remaining Surfaces

      1. Nicked, dented or scratched.

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

        1. Accept.

        2. More than in 8.A.(1).

        1. Repair, VRS6102 TASK 72-41-21-300-021 (REPAIR-021).

    9. SUBTASK 72-41-21-220-332 Examine the Stage 12 Rotor Path Ring Face at Location 3

    1. Refer to Figure.

      2. Galled.

      1. Repair, VRS6172, TASK 72-41-21-300-086 (REPAIR-086).

        2. Scored.

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

          1. Accept.

          2. More than in 9.B.(2)(a).

          1. Repair, VRS6172, TASK 72-41-21-300-086 (REPAIR-086).

    10. Figure: Stage 12 rotor path ring - inspection locations

    Stage 12 rotor path ring - inspection locations

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Deleted surface protection. (18VG011)