TASK 72-41-23-200-004 HPC Rear Seal Housing - Examine, Inspection-004

DMC:V2500-A0-72-41-2302-00A-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 72-41-23-200-004 HPC Rear Seal Housing - Examine, Inspection-004

Effectivity

FIG/ITEM PART NO.

02-250

6A1861

General

This TASK gives the procedure for the inspection of the rear seal housing.

Fig/item numbers in parentheses in the procedure agree with those used in the EIPC.

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 the parts which must have a crack test is given in Step. Do the crack 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 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 satisfactory.

The practices and processes referred to in the procedure by the TASK numbers are in the SPM.

References

Refer to the SPM for data on these items

Definitions 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.

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 72-41-23-230-053 Examine the Rear Seal Housing (02-250) for Cracks

    1. Clean the parts. Refer to TASK 72-41-23-100-000.

      2. Do the test for cracks on the parts that are given below.

        PART IDENT TASK/OP

        Rear Seal Housing

        1. Cracked

        1. Reject

    2. SUBTASK 72-41-23-220-062 Examine the Rear Seal Housing (02-250) Faces at Locations 1 and 2

    1. Refer to Figure.

      2. Galled.

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

        1. Accept

        2. More than in step 2A.(1)

        1. Repair, VRS6333, TASK 72-41-23-300-015 (REPAIR-015)

      3. Scored.

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

        1. Accept

        2. More than in step 2B.(1)

        1. Repair, VRS6333, TASK 72-41-23-300-015 (REPAIR-015)

      4. Wear.

        1. If the thickness is between 0.094 to 0.102 in. (2.39 to 2.59 mm)

        1. Accept

        2. Less than in step 2C.(1)

        1. Reject

    3. SUBTASK 72-41-23-220-063 Examine the Rear Seal Housing (02-250) Face at Location 1117

    1. Refer to Figure.

      2. Scored

      1. Repair, VRS6322, TASK 72-41-23-300-016 (REPAIR-016)

        2. Wear.

          1. If the diameter is between 23.1496 to 23.1508 in. (588.00 to 588.03 mm)

          1. Accept

          2. More than in step 3B.(1)

          1. Repair, VRS6322, TASK 72-41-23-300-016 (REPAIR-016)

    4. SUBTASK 72-41-23-220-064 Examine the Rear Seal Housing (02-250) Bolt Holes at Location 3

    1. Refer to Figure.

      2. Burred

      1. Repair, VRS6333, TASK 72-41-23-300-015 (REPAIR-015)

      3. Scored

      1. Repair, VRS6333, TASK 72-41-23-300-015 (REPAIR-015)

    5. SUBTASK 72-41-23-220-082 Examine the Rear Seal Housing (02-250) Face at Location 1118

    1. Refer to Figure.

      2. Scored

      1. Repair, VRS6333, TASK 72-41-23-300-015 (REPAIR-015)

        2. Wear.

          1. If the diameter is between 23.6161 to 23.6200 in. (599.85 to 599.95 mm)

          1. Accept

          2. Less than in step 5B.(1)

          1. Reject

    6. SUBTASK 72-41-23-220-065 Examine the Rear Seal Housing (02-250) Surface Protection

      1. Damaged

      1. Repair, VRS6323, TASK 72-41-23-300-018 (REPAIR-018)

    7. SUBTASK 72-41-23-220-088 Examine the Rear Seal Housing (02-250) all Remaining Surfaces

      1. Nicked, dented and scratched.

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

        1. Accept

        2. More than in step 7A. (1)

        1. Repair, VRS6333, TASK 72-41-23-300-015 (REPAIR-015)

    8. Figure: Rear Seal Housing - Inspection Locations

    Rear Seal Housing - Inspection Locations

Requirements After Job Completion

Follow-On Conditions

NONE