TASK 72-41-21-200-005-E00 HPC Stage 7 Rotor Path Ring - Examine The Stage 7 Cone and Rotor Path Case Assembly, Inspection-005 - SBE 72-0369

DMC:V2500-A5-72-41-2120-01A-300A-C|Issue No:004.00|Issue Date:2021-02-01

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 72-41-21-200-005-E00 HPC Stage 7 Rotor Path Ring - Examine The Stage 7 Cone and Rotor Path Case Assembly, Inspection-005 - SBE 72-0369

Effectivity

FIG/ITEM .

PART NO

03-300

6A7577

General

This TASK gives the procedure for the inspection of the front support cone.

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.

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 those parts which must have a crack test is given in Step. Do the crack test before the part is examined.

Do not discard any part until you are sure there are not 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 SPM.

References

Refer to the SPM for data on these items:

Definition of Damage, SPM,

Inspection of Parts, SPM.

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

Method 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 72-41-21-230-250 Examine the Stage 7 Cone and Rotor Path Assembly 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

        SPM TASK

        Stage 7 cone and rotor path assembly

        1. Cracked.

        1. Reject.

    2. SUBTASK 72-41-21-220-747-A00 Examine the Stage 7 Cone and Rotor Path Assembly Lining at Location 1050

    1. Refer to Figure.

      2. Scored.

        1. Not more than 0.005 in. (0.127 mm) in depth.

        1. Accept.

        2. More than in Step.

        1. Refer to Repair, VRS9671 TASK 72-41-21-300-091 (REPAIR-091).

      3. Chipped.

      1. Refer to Repair, VRS9671 TASK 72-41-21-300-091 (REPAIR-091).

      4. Wear.

        1. If the lining radius is between 10.3250 in. to 10.3290 in. (262.255 mm to 262.357 mm).

        1. Accept.

        2. If the lining radius is more than in Step.

        1. Refer to Repair, VRS9671 TASK 72-41-21-300-091 (REPAIR-091).

    3. SUBTASK 72-41-21-220-748 Examine the Stage 7 Rotor Path Ring Face at Location 1180

    1. Refer to Figure.

      2. Galled.

        1. Not more than 0.002 in. (0.051 mm) in depth.

        1. Accept.

        2. More than in Step.

        1. Refer to repair, VRS6092 TASK 72-41-21-300-002 (REPAIR-002).

      3. Scored.

        1. Not more than 0.002 in. (0.051 mm) in depth.

        1. Accept.

        2. More than in Step.

        1. Refer to repair, VRS6092 TASK 72-41-21-300-002 (REPAIR-002).

      4. Worn.

        1. If the diameter is between 21.3516 in. and 21.3547 in. (542.33 mm and 542.41 mm).

        1. Accept.

        2. If the diameter is less than in Step.

        1. Reject.

    4. SUBTASK 72-41-21-220-749 Examine the Stage 7 Cone and Rotor Path Assembly Ring Groove at Location 1119

    1. Refer to Figure.

      2. Scored.

        1. Not more than 0.002 in. (0.051 mm) in depth.

        1. Accept.

        2. More than in Step.

        1. Reject.

      3. Galled.

        1. Not more than 0.002 in. (0.051 mm) in depth.

        1. Accept.

        2. More than in Step.

        1. Reject.

      4. Groove width.

        1. If the width of the groove is between 0.1154 in. to 0.1173 in. (2.931 mm to 2.979 mm).

        1. Accept.

        2. If the width of the groove is more than in Step.

        1. Reject.

    5. SUBTASK 72-41-21-220-750 Examine the Stage 7 Cone and Rotor Path Assembly Front and Rear Flanges at Faces 1 to 3 and Location 1145

    1. Refer to Figure.

      2. Galled.

        1. Not more than 0.002 in. (0.051 mm) in depth.

        1. Accept.

        2. More than in Step.

        1. Refer to repair, VRS6092 TASK 72-41-21-300-002 (REPAIR-002).

      3. Scored.

        1. Not more than 0.002 in. (0.051 mm) in depth.

        1. Accept.

        2. More than in Step.

        1. Refer to repair, VRS6092 TASK 72-41-21-300-002 (REPAIR-002).

      4. Location 1145.

        1. If the diameter is between 22.8248 in. and 22.8448 in. (579.750 mm and 580.258 mm).

        1. Accept.

        2. Less than in Step.

        1. Reject.

    6. SUBTASK 72-41-21-220-751 Examine the Stage 7 Cone and Rotor Path Assembly Boltholes at Location 5 and 6

    1. Refer to Figure.

      2. Burred edges.

      1. Refer to repair, VRS6092 TASK 72-41-21-300-002 (REPAIR-002).

      3. Scratched.

      1. Refer to repair, VRS6092 TASK 72-41-21-300-002 (REPAIR-002).

    7. SUBTASK 72-41-21-220-752 Examine the Stage 7 Cone Rotor Path Assembly Location Dowel at Location 1187

    1. Refer to Figure.

      2. Location 1187.

        1. If the diameter of the dowel is between 0.303 in. to 0.305 in. (7.696 mm to 7.747 mm).

        1. Accept.

        2. If the diameter of the dowel is less than in Step.

        1. Refer to repair, VRS6342 TASK 72-41-21-300-050 (REPAIR-050).

      3. Loose.

      1. Refer to repair, VRS6342 TASK 72-41-21-300-050 (REPAIR-050).

    8. SUBTASK 72-41-21-220-753 Examine the Stage 7 Cone and Rotor Path Assembly Dowel Holes at Locations 4 and 7

    1. Refer to Figure.

      2. Burred edges.

      1. Refer to repair, VRS6092 TASK 72-41-21-300-002 (REPAIR-002).

      3. Scratched.

      1. Refer to repair, VRS6092 TASK 72-41-21-300-002 (REPAIR-002).

    9. SUBTASK 72-41-21-220-771 Examine the Stage 7 Cone and Rotor Path Assembly Surface Protection for Damage

      1. Damaged.

      1. Refer to repair, VRS6161 TASK 72-41-21-300-004 (REPAIR-004).

    10. SUBTASK 72-41-21-220-754 Examine the Stage 7 Cone and Rotor Path Assembly all Remaining Surfaces

      1. Nicked, dented and scratched.

        1. Not more than 0.002 in. (0.051 mm) in depth.

        1. Accept.

        2. More than in Step.

        1. Refer to repair, VRS6092 TASK 72-41-21-300-002 (REPAIR-002).

    11. Figure: Stage 7 Cone And Rotor Path Assembly - Inspection Locations

    Stage 7 Cone And Rotor Path Assembly - Inspection Locations

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised the procedure to update VRS number. (18VG427)