TASK 72-41-34-200-022 HPC Variable Stator Vane Actuation System - Examine The Crank Levers, Bearing Housing Supports, And Stage 3 And 4 Actuating Levers, Inspection-022

DMC:V2500-A0-72-41-3400-01A-300A-B|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 72-41-34-200-022 HPC Variable Stator Vane Actuation System - Examine The Crank Levers, Bearing Housing Supports, And Stage 3 And 4 Actuating Levers, Inspection-022

Effectivity

FIG/ITEM PART NO.

01-470

6A3299

01-470

6A7436

01-500

6A3833

01-500

6A4516

01-500

6A7806

01-520

6A3834

01-520

6A4398

01-520

6A7439

01-520

6A8682

01-540

6A3524

01-540

6A4399

01-560

6A3835

01-560

6A4400

01-560

6A7807

01-560

6A8681

01-579

6A3836

General

This TASK gives the procedure for the inspection of the VIGV/VSV crank levers, bearing housing support and stage 3 and 4 actuating levers.

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.

Do not discard any part until you are sure there are no repairs available. Refer to the instruction 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 be 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 the 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 72-41-34-230-072 Examine the VIGV/VSV Crank Levers, Bearing Housing Support and Stage 3 and 4 Actuating Levers for Cracks

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

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

        PART IDENT

        TASK/SUBTASK

        VIGV/VSV crank levers, bearing housing support and stage 3 and 4 actuating levers

        SPM TASK

        1. Cracked

        1. Reject

    2. SUBTASK 72-41-34-220-158 Examine the VIGV/VSV Crank Levers and Stage 3 and 4 Actuating Levers, Bolt Holes at Locations 1 and 2

    1. Refer to Figure, Figure and Figure.

      2. Scored.

        1. Not more than 0.002 in. (0.05 mm) in depth

        1. Accept

        2. More than in step B.(1)

        1. Reject

      3. Burred edges

      1. Reject

      4. Elongated

      1. Reject

    3. SUBTASK 72-41-34-220-159 Examine the VIGV/VSV Crank Levers and Stage 3 and 4 Actuating Levers, Surfaces at Locations 3 and 4

    1. Refer to: Figure, Figure and Figure.

      2. Galled.

        1. Not more than 0.002 in. (0.05 mm) in depth

        1. Accept

        2. More than in step B.(1)

        1. Reject

      3. Scored.

        1. Not more than 0.002 in. (0.05 mm) in depth

        1. Accept

        2. More than in step C.(1)

        1. Reject

      4. Scratched.

        1. Not more than 0.002 in. (0.05 mm) in depth

        1. Accept

        2. More than in step D.(1)

        1. Reject

      5. Nicked.

        1. Not more than 0.002 in. (0.05 mm) in depth

        1. Accept

        2. More than in step E.(1)

        1. Reject

    4. SUBTASK 72-41-34-220-332-A00 -A1 Series : Examine the VIGV and VSV Crank Levers Surface Coating

    1. Refer to: Figure

      2. Surface coating.

        1. Missing

        1. Reject

    5. SUBTASK 72-41-34-220-332-B00 Examine the VIGV and VSV Crank Levers Surface Coating (Pre SBE 72-0366, Pre SBE 72-0406 and Pre SBE 72-0560)

    1. Refer to: Figure.

      2. Surface coating.

        1. Missing

        1. Reject

    6. SUBTASK 72-41-34-220-160 Examine the Stage 6 Crank Lever Stud and Wire Thread Insert at Locations 5 and 6 (Pre SBE 72-0560)

    1. Refer to: Figure.

      2. Stud at location 5.

        1. Broken

        1. Reject

        2. Loose

        1. Reject

        3. Crossed threads

        1. Reject

        4. Stripped threads

        1. Reject

        5. Threads that are not there

        1. Reject

        6. Excessively worn

        1. Reject

      3. Wire thread insert at location 6.

        1. Crossed threads

        1. Reject

        2. Stripped threads

        1. Reject

        3. Threads that are not there

        1. Reject

        4. Excessively worn

        1. Reject

    7. SUBTASK 72-41-34-220-161 Examine the VIGV and VSV Crank Levers and Stage 3 and 4 Actuating Levers all Remaining Surfaces

      1. Nicked.

        1. Not more than 0.002 in. (0.05 mm) in depth

        1. Accept

        2. More than in step A.(1)

        1. Reject

      2. Scratched.

        1. Not more than 0.002 in. (0.05 mm) in depth

        1. Accept

        2. More than in step B.(1)

        1. Reject

      3. Scored.

        1. Not more than 0.002 in. (0.05 mm) in depth

        1. Accept

        2. More than in step C.(1)

        1. Reject

    8. SUBTASK 72-41-34-220-293 Examine the VSV Bearing Housing Support Bolt Holes at Locations 1 and 2 (Pre SBE 72-0560)

    1. Refer to: Figure.

      2. Scored.

        1. Not more than 0.002 in. (0.05 mm) in depth

        1. Accept

        2. More than in step B.(1)

        1. Reject

      3. Burred edges

      1. Reject

      4. Elongated

      1. Reject

    9. SUBTASK 72-41-34-220-294 Examine the VSV Bearing Housing Support All Surfaces (Pre SBE 72-0560)

    1. Refer to: Figure.

      2. Scored.

        1. Not more than 0.002 in. (0.05 mm) in depth

        1. Accept

        2. More than in step B.(1)

        1. Reject

      3. Burred edges

      1. Reject

      4. Galled.

        1. Not more than 0.002 in. (0.05 mm) in depth

        1. Accept

        2. More than in step D.(1)

        1. Reject

      5. Scratched.

        1. Not more than 0.002 in. (0.05 mm) in depth

        1. Accept

        2. More than in step E.(1)

        1. Reject

      6. Nicked.

        1. Not more than 0.002 in. (0.05 mm) in depth

        1. Accept

        2. More than in step F.(1)

        1. Reject

      7. Corrosion pitted.

        1. Not more than 0.002 in. (0.05 mm) in depth

        1. Accept

        2. More than in step G.(1)

        1. Reject

    10. SUBTASK 72-41-34-220-295 Examine the VSV Bearing Housing Support Surface Coating (SBE 72-0366 and Pre SBE 72-0560)

      SBE 72-0366: Actuating mechanism HPC variable vanes - introduction of a revised crankshaft assembly

    1. Refer to: Figure.

      2. Surface coating.

        1. Missing

        1. Reject

    11. Figure: Locations to examine the VIGV/VSV crank levers

    Locations to examine the VIGV/VSV crank levers

    Figure: Locations to examine the VSV bearing housing support

    Locations to examine the VSV bearing housing support

    Figure: -A1 series and Pre SBE 72-0366 and Pre SBE 72-0406 : Surface coated locations to examine the VIGV and VSV crank levers

    -A1 series and Pre SBE 72-0366 and Pre SBE 72-0406 : Surface coated locations to examine the VIGV and VSV crank levers

    Figure: Stage 3 Actuating Lever - Inspection Locations

    Stage 3 Actuating Lever - Inspection Locations

    Figure: Stage 4 Actuating Lever - Inspection Locations

    Stage 4 Actuating Lever - Inspection Locations

Requirements After Job Completion

Follow-On Conditions

NONE