TASK 72-32-35-200-002-A00 Front Bearing Compartment Rear Air Seal Assembly - Examine, Inspection-002

DMC:V2500-A1-72-32-3501-00A-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

V2500-A1

Common Information

TASK 72-32-35-200-002-A00 Front Bearing Compartment Rear Air Seal Assembly - Examine, Inspection-002

Effectivity

FIG/ITEM

PART NO.

01-100

5R0057

General

This TASK gives the procedure for the inspection of the Seals. For the other parts of the front bearing compartment rear air seal, refer to TASK 72-32-35-200-000.

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 70-20-00-200-501.

All the parts must be cleaned before any part is examined. Refer to the TASK 72-32-35-100-000.

All 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. Limits for cracks are given in the SUBTASK for each part.

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 later date.

All parts must be examined to make sure that all repairs have been completed satisfactorily.

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

References

Refer to the SPM for the data on these items.

Definitions of damages, SPM TASK 70-02-02-350-501

Inspection of parts, SPM TASK 70-20-00-200-501

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-32-35-230-052 Examine the Seal (01-100) for Cracks

    1. Clean the part. Refer to TASK 72-32-35-100-000.

      2. Do the crack test on the part that is given below. Use the applicable penetrant inspection procedure.

        PART IDENT

        TASK/OP

        Seal

        1. Cracked

        1. Reject

    2. SUBTASK 72-32-35-220-053 Examine the Seal (01-100) Brush Seal Holder Surfaces, Location 1

    1. Refer to Figure.

      2. Nicked

      1. Repair, VRS1251 TASK 72-32-35-300-001 (REPAIR-001)

      3. Scored

      1. Repair, VRS1251 TASK 72-32-35-300-001 (REPAIR-001)

    3. SUBTASK 72-32-35-220-054 Examine the Seal (01-100) Brush Seals, Location 4

    1. Refer to Figure.

      2. Examine the brush and bristle wear at location 4.

        1. Average diameter of worn bristles measured at 8 positions is less than 7.83 in. (199.0 mm.)

        1. Accept

        2. Wear more than in Step

        1. Repair, VRS1252 TASK 72-32-35-300-002 (REPAIR-002)

      3. Examine the brush seal bristle displacement at location 4.

        1. Up to 10 per cent of the bristles may be displaced from the original lay direction, provided they are randomly distributed

        1. Accept

        2. Displaced more than in Step

        1. Repair, VRS1252 TASK 72-32-35-300-002 (REPAIR-002)

    4. SUBTASK 72-32-35-220-055 Examine the Seal (01-100) Sealing Strip

    1. Refer to Figure.

      2. Examine the sealing strip at location 2.

        1. Worn or deteriorated

        1. Repair, VRS1256 TASK 72-32-35-300-003 (REPAIR-003)

    5. SUBTASK 72-32-35-380-051 Apply the Dry Film Lubricant to the Location 5

    1. Refer to Figure.

      2. Apply the dry film lubricant to the seal

      1. Repair, VRS1225 TASK 72-32-35-300-010 (REPAIR-010)

    6. Figure: FBC rear air seal

    FBC rear air seal

Requirements After Job Completion

Follow-On Conditions

NONE