TASK 72-41-21-200-005-D00 HPC Stage 7 Front Cone And Rotor Path Case Assembly- Examine The Stage 7 Rotor Path (And Support Assembly), Inspection-005 - SBE 72-0627

DMC:V2500-A5-72-41-2120-00A-300A-C|Issue No:002.00|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-D00 HPC Stage 7 Front Cone And Rotor Path Case Assembly- Examine The Stage 7 Rotor Path (And Support Assembly), Inspection-005 - SBE 72-0627

Effectivity

FIG/ITEM PART NO.

03-300

6B1430

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 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 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 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:

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 72-41-21-230-244 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 case assembly

        1. Cracked

        1. Reject

    2. SUBTASK 72-41-21-220-687 Examine the Stage 7 Cone and Rotor Path Case Assembly Lining at Location 1050

    1. Refer to Figure.

      2. Scored

        1. Not more than 0.005 inch (0.13 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. Worn

        1. If the lining radius is between 10.3250 to 10.3290 inch (262.255 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 72-41-21-220-688 Examine the Stage 7 Cone and Rotor Path Case Assembly at Location 1180

    1. Refer to Figure.

      2. Galled

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

        1. Accept

        2. More than in Step.

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

      3. Scored

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

        1. Accept

        2. More than in Step.

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

      4. Worn

        1. If the diameter is between 21.3504 and 21.3551 inch (542.300 and 542.420 mm)

        1. Accept

        2. If the diameter is less than in Step.

        1. Reject

    4. SUBTASK 72-41-21-220-689 Examine the Stage 7 Cone and Rotor Path Case Assembly Groove at Location 1119

    1. Refer to Figure.

      2. Scored

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

        1. Accept

        2. More than in Step.

        1. Reject

      3. Galled

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

        1. Accept

        2. More than in Step.

        1. Reject

      4. Groove width

        1. If the width of the groove is between 0.115 to 0.1185 inch (2.92 to 3.01 mm)

        1. Accept

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

        1. Reject

    5. SUBTASK 72-41-21-220-690 Examine the Stage 7 Cone and Rotor Path Case Assembly Front and Rear Flanges at Faces 1 and 2

    1. Refer to Figure.

      2. Galled

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

        1. Accept

        2. More than in Step.

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

      3. Scored

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

        1. Accept

        2. More than in Step.

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

    6. SUBTASK 72-41-21-220-691 Examine the Stage 7 Cone and Rotor Path Case Assembly Boltholes at Locations 5 and 6

    1. Refer to Figure.

      2. Burred edges

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

      3. Scratched

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

    7. SUBTASK 72-41-21-220-692 Examine the Stage 7 Cone and Rotor Path Case Assembly Location Pin at Location 1187

    1. Refer to Figure.

      2. Location 1187.

        1. If the diameter of the pin is between 0.1580 to 0.1584 inch (4.012 to 4.024 mm)

        1. Accept

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

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

      3. Loose

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

    8. SUBTASK 72-41-21-220-693 Examine the Stage 7 Cone and Rotor Path Case Assembly Dowel Holes at Locations 4 and 7

    1. Refer to Figure.

      2. Burred edges

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

      3. Scratched

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

    9. SUBTASK 72-41-21-220-694 Examine the Stage 7 Rotor Path Ring Surface Protection for Damage

      1. Damaged

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

    10. SUBTASK 72-41-21-220-695 Examine all the Remaining Stage 7 Cone and Rotor Path Case Assembly Surfaces

      1. Nicked, dented and scratched

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

        1. Accept

        2. More than in Step.

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

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

    Stage 7 Cone And Rotor Path Case Assembly - Inspection Locations

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

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