TASK 72-41-34-200-027-B00 HPC Vane Actuating Crankshaft And Housings Assembly - Examine, Inspection-027

DMC:V2500-A0-72-41-3410-00B-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 72-41-34-200-027-B00 HPC Vane Actuating Crankshaft And Housings Assembly - Examine, Inspection-027

Effectivity

FIG/ITEM PART NO.

01-600

6A7662

General

This TASK gives the procedure for the inspection of the vane actuating crank shaft assembly.

Fig./item numbers in parentheses in the procedure agree with those used in the IPC. Only the primary Fig./item numbers are used. For the Service Bulletin alpha variants refer to 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 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.

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.

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 satisfactorily.

The practices and processes referred to in the procedure by the TASK/SUBTASK number are in the SPM.

References

Refer to the SPM for data on these items.

Definition 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 72-41-34-230-109 Examine the Vane Actuating Crank Shaft Assembly for Cracks

    1. Clean the parts. Refer to TASK 72-41-34-100-000 (CLEANING-000).

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

        PART IDENT

        TASK/SUBTASK

        Vane actuating crank shaft assy

        1. Cracked

        1. Reject

    2. SUBTASK 72-41-34-220-265 Examine the Vane Actuating Crank Shaft Assembly Front Bearing Housing at Location 1

    1. Refer to: Figure

      2. Bearing housing assembly freedom.

        1. Bearing housing assembly movement should be smooth with no radial movement

        1. Accept

        2. Rotational binding

        1. Reject

        3. Radial movement

        1. Reject

    3. SUBTASK 72-41-34-220-266 Examine the Vane Actuating Crank Shaft Assemblyy Bearing Surface at Location 1354

    1. Refer to: Figure

      2. Scored.

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

        1. Accept

        2. More than in step A.(1)

        1. Reject

      3. Scratched.

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

        1. Accept

        2. More than in step B.(1)

        1. Reject

      4. Wear.

        1. If the crank shaft diameter is between 2.47248 to 2.47346 in. (62.8010 to 62.8260 mm)

        1. Accept

        2. Less than in step C.(1)

        1. Reject

    4. SUBTASK 72-41-34-220-267 Examine the Vane Actuating Crank Shaft Assembly Wire Thread Insert at Location 6

    1. Refer to: Figure

      2. Broken

      1. Reject

      3. Crossed threads

      1. Reject

      4. Worn excessively

      1. Reject

      5. Threads that are not there

      1. Reject

    5. SUBTASK 72-41-34-220-268 Examine the Vane Actuating Crank Shaft Assembly Surface at Location 4

    1. Refer to: Figure

      2. Galled.

        1. Up to 0.005 in. (0.13 mm) in depth. The total area must not be more than 10 percent of the surface area

        1. Accept

        2. More than in step A.(1)

        1. Reject

    6. SUBTASK 72-41-34-220-269 Examine the Vane Actuating Crank Shaft Assembly Bolt Holes at Location 9

    1. Refer to: Figure

      2. Elongated

      1. Reject

      3. Worn.

        1. If the large diameter of the holes is less than 0.361 in. (9.16 mm)

        1. Accept

        2. If the large diameter of the hole is more than in step B.(1)

        1. Reject

        3. If the smaller diameter of the hole is less than 0.314 in. (7.97 mm)

        1. Accept

        4. If the smaller diameter of the hole is more than in step B.(3)

        1. Reject

      4. Burred edges

      1. Reject

    7. SUBTASK 72-41-34-220-270 Examine the Vane Actuating Crank Shaft Assembly Bush Holes at Location 7

    1. Refer to: Figure

      2. Elongated

      1. Reject

      3. Wear.

        1. The hole bore is between 0.375 to 0.376 in. (9.54 to 9.56 mm)

        1. Accept

        2. More than in step B.(1)

        1. Reject

      4. Burred edges

      1. Reject

    8. SUBTASK 72-41-34-220-271 Examine the Vane Actuating Crank Shaft Assembly Bush Holes at Location 2, 3 and 5

    1. Refer to: Figure

      2. Elongated

      1. Reject

      3. Wear.

        1. The hole bore is less than 0.314 in. (7.97 mm)

        1. Accept

        2. More than in step B.(1)

        1. Reject

      4. Burred edges

      1. Reject

    9. SUBTASK 72-41-34-220-272 Examine the Vane Actuating Crank Shaft Assembly Rigging Position Location 8

      1. Bent.

        1. Up to 0.010 in. (0.25 mm)

        1. Accept

        2. More than in step (1)

        1. Reject

      2. Scored.

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

        1. Accept

        2. More than in step A.(1)

        1. Reject

      3. Scratched.

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

        1. Accept

        2. More than in step B.(1)

        1. Reject

      4. Wear.

        1. If the slot width is less than 0.277 in. (7.022 mm)

        1. Accept

        2. More than in step C .(1)

        1. Reject

    10. SUBTASK 72-41-34-220-251 Examine the Vane Actuating Crank Shaft Assembly All Remaining Surfaces

      1. Nicked, dented, scratched and burred.

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

        1. Accept

        2. More than in step (1)

        1. Reject

    11. Figure: SBE 72-0366 : Vane actuating crank shaft - inspection locations

    SBE 72-0366 : Vane actuating crank shaft - inspection locations

Requirements After Job Completion

Follow-On Conditions

NONE