TASK 72-32-72-200-002-A00 LPC Bleed Valve Ring - Examine, Inspection-002

DMC:V2500-A5-72-32-7200-02A-300A-C|Issue No:001.00|Issue Date:2020-05-01

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 72-32-72-200-002-A00 LPC Bleed Valve Ring - Examine, Inspection-002

Effectivity

FIG/ITEM

PART NO.

02-100

5A1450

02-100

5A1686

02-100

5A1872

General

This TASK gives the procedure for the inspection of the valve ring assembly.

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 TASK 72-32-72-100-000 (CLEANING-000).

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.

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.

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 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 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.

Inspection of Parts, SPM TASK 70-20-00-200-501.

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 72-32-72-230-054 Examine the Valve Ring Assembly for Cracks

    1. NOTE

      It is not necessary to remove the teflon coating before Fluorescent Penetrant Crack Inspection.

      Clean the parts. Refer to TASK 72-32-72-100-000 (CLEANING-000).

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

        PART IDENT

        TASK/SUBTASK

        Valve ring assembly

        1. Cracked

        1. Reject

    2. SUBTASK 72-32-72-220-061 Examine the Valve Ring Assembly Outer Surface

    1. Refer to Figure.

      2. Examine the outer surface at Location 1.

        1. Corroded, nicked or scratched

        1. Repair, VRS1750 TASK 72-32-72-300-003 (REPAIR-003)

    3. SUBTASK 72-32-72-220-062 Examine the Valve Ring Assembly (02-100) Coating Area

    1. Refer to Figure.

      2. Examine the coating area at Location 2.

        1. Peeled teflon coating

          1. If a total peeled area is not more than 20 percent of the coating

          1. Repair, VRS1750 TASK 72-32-72-300-003 (REPAIR-003)

          2. More than in Step

          1. Repair, VRS1748 TASK 72-32-72-300-009 (REPAIR-009)

        2. Corroded, nicked or scratched

        1. Repair, VRS1750 TASK 72-32-72-300-003 (REPAIR-003)

      3. Examine the mating surface at Location 6.

        1. Peeled teflon coating.

          1. If a total peeled area is not more than five percent of the mating surface

          1. Repair, VRS1750 TASK 72-32-72-300-003 (REPAIR-003)

          2. More than in Step

          1. Repair, VRS1748 TASK 72-32-72-300-009 (REPAIR-009)

        2. Corroded, nicked or scratched.

          1. Not more than 0.0059 in. (0.150 mm) in depth

          1. Repair, VRS1750 TASK 72-32-72-300-003 (REPAIR-003)

          2. More than in Step

          1. Reject

      4. Examine the corner edges of mating surface at location 9.

        1. Peeled teflon coating

          1. Any amount

          1. Repair, VRS1750 TASK 72-32-72-300-003 (REPAIR-003)

        2. Corroded, nicked or scratched

          1. Not more than 0.0059 in. (0.150 mm) in depth

          1. Repair, VRS1750 TASK 72-32-72-300-003 (REPAIR-003)

          2. More than in Step

          1. Reject

    4. SUBTASK 72-32-72-220-063 Examine the Valve Ring Assembly Holes

    1. Refer to Figure.

      2. Examine the pin holes at Location 0485.

        1. Worn.

          1. If the diameter is between 0.2495 and 0.2500 in. (6.337 and 6.352 mm)

          1. Accept

        2. Write down the dimension of the diameter

          3. More than 0.2500 in. (6.352 mm)

          1. Repair, VRS1752 TASK 72-32-72-300-005 (REPAIR-005)

      3. Examine the pin holes at Location 0480.

        1. Worn.

          1. If the diameter is between 0.3121 and 0.3125 in. (7.925 and 7.940 mm)

          1. Accept

        2. Write down the dimension of the diameter

          3. More than 0.3125 in. (7.940 mm)

          1. Repair, VRS1752 TASK 72-32-72-300-005 (REPAIR-005)

      4. Examine the bushing at Location 3.

        1. Loose or missing

        1. Repair, VRS1752 TASK 72-32-72-300-005 (REPAIR-005)

    5. SUBTASK 72-32-72-220-064 Examine the Valve Ring Assembly Seal

    1. Refer to Figure.

      2. Examine the seal at Location 4.

        1. Torn or missing

        1. Repair, VRS1751 TASK 72-32-72-300-006 (REPAIR-006)

      3. Examine the distance at location 7.

        1. Worn.

          1. If the distance is between 0.907 and 0.926 in. (23.03 and 23.53 mm)

          1. Accept

          2. Other than in Step

          1. Repair, VRS1751 TASK 72-32-72-300-006 (REPAIR-006)

    6. SUBTASK 72-32-72-220-066 Examine the Valve Ring Assembly Guide Assembly

    1. Refer to Figure.

      2. Examine the guide at Location 5.

        1. Loose or missing

        1. Repair, VRS1785 TASK 72-32-72-300-007 (REPAIR-007)

      3. Examine the rivet at Location 5.

        1. Loose or missing

        1. Repair, VRS1785 TASK 72-32-72-300-007 (REPAIR-007)

    7. SUBTASK 72-32-72-220-094 Examine the Valve Ring Assembly Side Surfaces

    1. Refer to Figure.

      2. Examine the side surface at location 8.

        1. Corroded or dented

        1. Repair, VRS1750 TASK 72-32-72-300-003 (REPAIR-003)

    8. SUBTASK 72-32-72-220-065 Examine the Valve Ring Assembly all the Surfaces

    1. Refer to Figure.

      2. Examine all the surfaces which do not include the identified locations.

        1. Corroded, nicked or scratched

        1. Repair, VRS1750 TASK 72-32-72-300-003 (REPAIR-003)

    9. Figure: Locations on the Valve Ring Assembly

    Sheet 1

    Legend
    Locations on the Valve Ring Assembly

    Sheet 1

    Close

    Figure: Locations on the Valve Ring Assembly

    Sheet 2

    Legend
    Locations on the Valve Ring Assembly

    Sheet 2

    Close

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised task number. (92VJ857F)