TASK 72-41-34-200-013-C00 HPC Stage 5 Unison Ring Connector Bridges - Examine, Inspection-013

DMC:V2500-A0-72-41-3435-00C-300A-C|Issue No:001.00|Issue Date:2013-11-01

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 72-41-34-200-013-C00 HPC Stage 5 Unison Ring Connector Bridges - Examine, Inspection-013

Effectivity

FIG/ITEM PART NO.

05-200

6A7611

05-200

6A7860

05-200

6A7869

General

This TASK gives the procedure for the inspection of the stage 5 Bridge Piece Assembly.

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 check 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 test before the 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 could 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 numbers 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 item 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 72-41-34-230-126 Examine the Stage 5 Bridge Piece Asssembly for Cracks

    1. Clean the parts. Refer to TASK 72-41-34-100-000 (CLEANING-000).

      2. Do the test for cracks on the part that is given below.

        PART IDENT

        TASK/SUBTASK

        Stage 5 bridge piece assembly

        1. Cracked

        1. Reject

    2. SUBTASK 72-41-34-220-372 Examine the Stage 5 Bridge Piece Assembly at Location 1

    1. Refer to: Figure

      2. Nicked.

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

        1. Accept

        2. More than in (1)

        1. Repair, VRS6198 TASK 72-41-34-300-008 (REPAIR-008)

      3. Scored.

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

        1. Accept

        2. More than in (1)

        1. Repair, VRS6198 TASK 72-41-34-300-008 (REPAIR-008)

      4. Scratched.

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

        1. Accept

        2. More than in (1)

        1. Repair, VRS6198 TASK 72-41-34-300-008 (REPAIR-008)

    3. SUBTASK 72-41-34-220-373 Examine the Stage 5 Bridge Piece Assembly Spacers at Location 2

    1. Refer to: Figure

      2. Surface galled.

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

        1. Accept

        2. More than in (1)

        1. Repair, VRS6198 TASK 72-41-34-300-008 (REPAIR-008)

      3. Surface scratched.

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

        1. Accept

        2. More than in (1)

        1. Repair, VRS6198 TASK 72-41-34-300-008 (REPAIR-008)

        3. Welds cracked

        1. Reject

      4. Wear on the bore.

        1. Less than 0.232in. (5.905 mm) in diameter

        1. Accept

        2. More than in (1)

        1. Reject

    4. SUBTASK 72-41-34-220-374 Examine the Stage 5 Bridege Piece Assembly Bushes at Location 3

    1. Refer to: Figure

      2. Loose

      1. Repair, VRS6202, TASK 72-41-34-300-027 (REPAIR-027)

      3. Wear on the bore.

        1. Less than 0.198in. (5.023 mm) in diameter

        1. Accept

        2. More than in (1)

        1. Repair, VRS6202, TASK 72-41-34-300-027 (REPAIR-027)

      4. Scored.

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

        1. Accept

        2. More than in (1)

        1. Repair, VRS6202, TASK 72-41-34-300-027 (REPAIR-027)

      5. Bushes that are not there

      1. Repair, VRS6202, TASK 72-41-34-300-027 (REPAIR-027)

    5. SUBTASK 72-41-34-220-375 Examine the Stage 5 Bridge Piece Assembly Bolt Holes at Locations 4

    1. Refer to: Figure

      2. Scored.

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

        1. Accept

        2. More than in (1)

        1. Reject

      3. Burred

      1. Reject

      4. Elongated

      1. Reject

    6. SUBTASK 72-41-34-220-376 Examine the Stage 5 Bridege Piece Assembly Dowels at Locations 5

    1. Refer to: Figure

      2. Scored

      1. Reject

      3. Burred

      1. Reject

      4. Loose

      1. Reject

      5. Missing

      1. Reject

      6. Wear on the inner bore.

        1. Less than 0.439in. (11.14 mm) in diameter

        1. Accept

        2. Less than (1)

        1. Reject

    7. Figure: Stage 5 bridge piece assembly- inspection locations

    Stage 5 bridge piece assembly- inspection locations

Requirements After Job Completion

Follow-On Conditions

NONE