TASK 72-41-21-200-014-A00 HPC Stage 12 Rotor Path Ring - Examine, Inspection-014

DMC:V2500-A0-72-41-2130-00A-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-A00 HPC Stage 12 Rotor Path Ring - Examine, Inspection-014

Effectivity

FIG/ITEM PART NO.

04-700

6A3656

General

This TASK gives the procedure for the inspection of the stage 12 rotor path ring.

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 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 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 72-41-21-230-065 Examine the Stage 12 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

          Stage 12 rotor path ring

          TASK

          TASK 70-23-02-230-501

          1. Cracked.

          1. Reject.

    2. SUBTASK 72-41-21-220-147 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 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 10.1933 in. and 10.1973 in. (258.91 mm and 259.01 mm).

        1. Accept.

        2. If more than Step.

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

    3. SUBTASK 72-41-21-220-148 Examine the Stage 12 Rotor Path Ring Faces at Locations 1, 2, 4, 1164 and 1167

    1. Refer to Figure.

      2. Locations 1, 2, 4, 1164 and 1167.

        1. Galled.

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

          1. Accept.

          2. More than (a).

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

        2. Scored.

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

          1. Accept.

          2. More than (a).

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

      3. Location 1164.

        1. Worn.

          1. If the diameter is between 21.158 in. and 21.161 in. (537.40 mm and 537.48 mm).

          1. Accept.

          2. If less than (a).

          1. Reject.

      4. Location 1167.

        1. Worn.

          1. If the diameter is between 21.339 in. and 21.342 in. (542.00 mm and 542.08 mm).

          1. Accept.

          2. If less than (a).

          1. Reject.

    4. SUBTASK 72-41-21-220-149 Examine the Stage 12 Rotor Path Ring Bolt Holes at Locations 5

    1. Refer to Figure.

      2. Burred edges.

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

        1. Accept.

        2. More than (1).

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

      3. Scratched.

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

        1. Accept.

        2. More than (1).

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

    5. SUBTASK 72-41-21-220-150 Examine the Stage 12 Rotor Path Ring Groove at Location 1141

    1. Refer to Figure.

      2. Scored.

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

        1. Accept.

        2. More than (1).

        1. Reject.

      3. Galled.

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

        1. Accept.

        2. More than (1).

        1. Reject.

      4. Groove width.

        1. Worn.

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

          1. Accept.

          2. If more than (a).

          1. Reject.

    6. SUBTASK 72-41-21-220-151 Examine the Stage 12 Rotor Path Ring Location Dowel Hole at Location 1183

    1. Refer to Figure.

      2. Burred edges.

      1. Reject.

      3. Scratched.

      1. Reject.

        2. Worn.

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

          1. Accept.

          2. More than (1).

          1. Reject.

    7. SUBTASK 72-41-21-220-183 Examine the Dimension A

    1. Refer to Figure.

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

      1. Accept.

      3. More than B.

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

    8. SUBTASK 72-41-21-220-194 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 (1).

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

    9. SUBTASK 72-41-21-220-195 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 (1).

          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)