TASK 72-41-21-200-015-B00 HPC Cross Key Location Ring - Examine, Inspection-015

DMC:V2500-A0-72-41-2103-00B-300A-C|Issue No:003.00|Issue Date:2018-05-01

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 72-41-21-200-015-B00 HPC Cross Key Location Ring - Examine, Inspection-015

Effectivity

FIG/ITEM

PART NO.

04-750

6A4179

04-750

6A5738

General

This TASK gives the procedure for the inspection of the cross key location 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 variants refer to the IPC.

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 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 is 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 72-41-21-230-139 Examine the Cross Key Location Ring for Cracks

    1. Clean the part. 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

        Cross key location ring

        1. Cracked

        1. Reject.

    2. SUBTASK 72-41-21-220-334 Examine the Cross Key Location Ring Faces at Locations 1 to 3

    1. Refer to Figure.

      2. Location 1.

        1. Galled.

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

          1. Accept.

          2. More than in Step

          1. Repair, VRS6103 TASK 72-41-21-300-023 (REPAIR-023)

        2. Scored.

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

          1. Accept.

          2. More than in Step

          1. Repair, VRS6103 TASK 72-41-21-300-023 (REPAIR-023)

      3. Locations 2 and 3.

        1. Galled.

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

          1. Accept.

          2. More than in Step

          1. Repair, VRS6171 TASK 72-41-21-300-024 (REPAIR-024)

        2. Scored.

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

          1. Accept.

          2. More than in Step

          1. Repair, VRS6171 TASK 72-41-21-301-024 (REPAIR-024)

      4. Width of location lug between faces 2 and 3.

        1. If the width is between 0.784 in. to 0.785 in. (19.925 mm to 19.951 mm)

        1. Accept.

        2. Less than in Step

        1. Repair, VRS6171 TASK 72-41-21-300-024 (REPAIR-024)

    3. SUBTASK 72-41-21-220-335 Examine the Cross Key Location Ring Face at Location 4

    1. Refer to Figure.

      2. Scored.

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

        1. Accepted.

        2. More than in Step

        1. Repair, VRS6171 TASK 72-41-21-300-024 (REPAIR-024)

      3. Worn.

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

        1. Accept.

        2. More than in Step

        1. Repair, VRS6171 TASK 72-41-21-300-024 (REPAIR-024)

    4. SUBTASK 72-41-21-220-336 Examine the Cross Key Location Ring Bolt holes at Location 5

    1. Refer to Figure.

      2. Burred edges

      1. Repair, VRS6103 TASK 72-41-21-300-023 (REPAIR-023)

      3. Scratched

      1. Repair, VRS6103 TASK 72-41-21-300-023 (REPAIR-023)

    5. SUBTASK 72-41-21-220-337 Examine the Cross Key Location Ring Dowel Holes at Locations 6 and 1166

    1. Refer to Figure.

      2. Burred edges

      1. Repair, VRS6103 TASK 72-41-21-300-023 (REPAIR-023)

      3. Scratched

      1. Repair, VRS6103 TASK 72-41-21-300-023 (REPAIR-023)

      4. Location 1166

        1. If the hole diameter is between 0.315 in. to 0.316 in. (8.00 mm to 8.02 mm)

        1. Accept.

        2. If the hole diameter is more than in Step

        1. Reject.

    6. SUBTASK 72-41-21-220-338 Examine the Cross Key Location Ring Face at Location 7

    1. Refer to Figure.

      2. Scored.

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

        1. Accept.

        2. More than in Step

        1. Reject.

      3. Worn.

        1. If the diameter is between 21.4141 in. and 21.4173 in. (543.920 mm and 544.000 mm)

        1. Accept.

        2. If the diameter is more than in Step

        1. Reject.

    7. SUBTASK 72-41-21-220-339 Examine the Cross Key Location Ring Face at Location 8

    1. Refer to Figure.

      2. Scored, burred or galled.

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

        1. Accept.

        2. More than in Step

        1. Repair, VRS6103 TASK 72-41-21-300-023 (REPAIR-023)

    8. SUBTASK 72-41-21-220-340 Examine the Cross Key Location 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 Step

        1. Repair, VRS6103 TASK 72-41-21-300-023 (REPAIR-023)

    9. Figure: Cross key location ring - inspection locations

    Cross key location ring - inspection locations

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Deleted requirements after job completion. (17VG012)