TASK 72-32-71-200-004-A00 LPC Bleed Valve Power Arm - Examine, Inspection-004

DMC:V2500-A0-72-32-7141-00A-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 72-32-71-200-004-A00 LPC Bleed Valve Power Arm - Examine, Inspection-004

Effectivity

FIG/ITEM

PART NO.

01-300

5A3686

General

This TASK gives the procedure for the inspection of the power arm assembly. For the other bleed valve support and arm parts, refer to TASK 72-32-71-200-000.

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 70-20-01-200-501.

All the parts must be cleaned before any part is examined. Refer to TASK 72-32-71-100-000.

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 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 70-20-01-200-501

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 72-32-71-230-056 Examine the Power Arm Assembly (01-300) for Cracks

    1. Clean the part. Refer to TASK 72-32-71-100-000.

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

        PART INDENT

        TASK/OP

        Power arm assembly

        1. Cracked

        1. Reject

    2. SUBTASK 72-32-71-220-072 Examine the Power Arm Assembly (01-300) Power Arm at Location 1

    1. Refer to Figure.

      2. Nicked

      1. Repair, VRS1327 TASK 72-32-71-300-010

      3. Scratched

      1. Repair, VRS1327 TASK 72-32-71-300-010

    3. SUBTASK 72-32-71-220-099 Examine the Power Arm Assembly (01-300) Pin Hole Inside Diameter at Location 0439

    1. Refer to Figure.

      2. Worn.

        1. If the diameter is between 0.2500 and 0.2511 in. (6.350 and 6.380 mm)

        1. Accept

        2. If the diameter is more than in Step

        1. Reject

    4. SUBTASK 72-32-71-220-073 Examine the Power Arm Assembly (01-300) Spherical Bearing at Location 2 and 4

    1. Refer to Figure.

      2. Diametral looseness between inner race and outer race.

        1. Up to 0.002 in. (0.05 mm)

        1. Accept

        2. More than in Step

        1. Repair, VRS1325 TASK 72-32-71-300-011

      3. Missing

      1. Repair, VRS1325 TASK 72-32-71-300-011

    5. SUBTASK 72-32-71-220-074 Examine the Power Arm Assembly (01-300) Sleeve Bearing at Location 3

    1. Refer to Figure.

      2. Loose

      1. Repair, VRS1326 TASK 72-32-71-300-012

      3. Missing

      1. Repair, VRS1326 TASK 72-32-71-300-012

    6. SUBTASK 72-32-71-220-100 Examine the Power arm Assembly (01-300) Sleeve Bearing Inside Diameter at Location 0436

    1. Refer to Figure.

      2. Worn.

        1. If the bore diameter is between 0.5006 and 0.5025 in. (12.713 and 12.764 mm)

        1. Accept

        2. More than 0.5025 in. (12.764 mm)

        1. Repair, VRS1326 TASK 72-32-71-300-012

    7. Figure: Locations on the power arm assembly

    Locations on the power arm assembly

    Figure: Locations on the power arm assembly

    Locations on the power arm assembly

Requirements After Job Completion

Follow-On Conditions

NONE