TASK 72-41-11-200-002-D00 HPC Wire Seals - Examine The Stage 7 And 8 Front And Rear Wire Seals, Inspection-002

DMC:V2500-A0-72-41-1102-00B-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 72-41-11-200-002-D00 HPC Wire Seals - Examine The Stage 7 And 8 Front And Rear Wire Seals, Inspection-002

Effectivity

FIG/ITEM

PART NO.

01-390

6A4915

01-390

6A7358

01-392

6A4916

01-392

6A7359

01-394

6A4917

01-394

6A7360

01-396

6A4918

01-396

6A7361

General

This TASK gives the procedure to examine the stage 7 and 8 HP compressor front and rear wire seals. You must make sure that this TASK is applicable to the part that is to be examined. Refer to TASK 72-41-11-200-000 (INSPECTION-000).

Fig/item numbers in parentheses in the procedure agree with those used in 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 parts must be visually examined for damage, corrosion and wear. Any defects that are not identified 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.

A ** following repair referenced in this inspection indicates that the repair is not yet published in the current revision of the manual and the part must be rejected. Contact IAE for additional information concerning FAA approved repair date.

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 later 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.

Record and Control of the Lives of Parts, SPM TASK 70-05-00-220-501.

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.

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 72-41-11-230-087 Examine the Front and Rear Wire Seals (01-390, 01-392, 01-394 and 01-396) for Cracks

    1. Clean the parts, refer to TASK 72-41-11-100-000.

    2. Do the crack test on the parts given below.

      PART IDENT

      TASK/SUBTASK

      Stage 7 front wire seal

      Stage 7 rear wire seal

      Stage 8 front wire seal

      Stage 8 rear wire seal

    2. SUBTASK 72-41-11-220-227 Examine the Front and Rear Wire Seals (01-390, 01-392, 01-394 and 01-396) Outer Diameter at Location 1

    1. Refer to Figure.

      2. Galled, scored or scratched

      1. Repair, VRS6286 TASK 72-41-11-300-015 (REPAIR-015)

    3. SUBTASK 72-41-11-220-228 Examine the Front and Rear Wire Seals (01-390, 01-392, 01-394 and 01-396) Front and Rear Faces at Locations 2 and 3

    1. Refer to Figure.

      2. Galled, scored or scratched

      1. Repair, VRS6286 TASK 72-41-11-300-015 (REPAIR-015)

      3. Dimensionally examine the stage 7 and 8 front and rear wire seals at dimension B.

        1. If dimension B is between 0.0402 and 0.0386in. (1.02 and 0.98 mm)

        1. Accept

        2. If dimension B is less than 0.0386 in. (0.98 mm)

        1. Reject

    4. SUBTASK 72-41-11-220-229 Measure the Free Diameter of the Front and Rear Wire Seals (01-390, 01-392, 01-394 and 01-396)

    1. Refer to Figure.

      2. NOTE

        1. Make sure that the measuring equipment does not compress the wire seals.

        2. Measure the diameter at eight equally spaced positions and calculate the average diameter; that is, add the eight values together and divide by eight.

        Measure the free diameter (diameter C).

        1. Stage 7 front wire seal (01-390).

          1. If the dimension C is between 17.756 and 16.968 in. (451.0 and 431.0 mm)

          1. Accept

          2. If the dimension C is more or less than the values in (a)

          1. Reject

        2. Stage 7 rear wire seal (01-392).

          1. If the dimension C is between 17.992 and 17.205 in. (457.0 and 437.0 mm)

          1. Accept

          2. If the dimension C is more or less than the values in Step

          1. Reject

        3. Stage 8 front wire seal (01-394).

          1. If the dimension C is between 18.386 and 17.598 in. (467.0 and 447.0 mm)

          1. Accept

          2. If the dimension C is more or less than the values in Step

          1. Reject

        4. Stage 8 rear wire seal (01-396).

          1. If the dimension C is between 18.504 and 17.716 in. (470.00 and 450.00 mm)

          1. Accept

          2. If the dimension C is more or less than the values in Step

          1. Reject

    5. Figure: Wire Seals - inspection locations

    Wire Seals - inspection locations

Requirements After Job Completion

Follow-On Conditions

NONE