TASK 72-41-21-200-005-A00 HPC Front Support Cone - Examine, Inspection-005

DMC:V2500-A0-72-41-2101-00A-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 72-41-21-200-005-A00 HPC Front Support Cone - Examine, Inspection-005

Effectivity

FIG/ITEM PART NO.

03-300

6A2849

General

This TASK gives the procedure for the inspection of the front support cone.

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.

The procedure for those parts which must have a crack test is given in Step. Do the crack test before the part is examined.

Do not discard any part until you are sure there are not 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 72-41-21-230-052 Examine the Front Support Cone for Cracks

    1. Clean the parts. Refer to TASK 72-41-21-100-000 (CLEANING-000).

      2. Do the test for cracks on the part that is given below.

        PART IDENT TASK/SUBTASK

        Front support cone

        TASK

        1. Cracked

        1. Reject

    2. SUBTASK 72-41-21-220-056 Examine the Front Support Cone Front and Rear Flanges at Faces 1 to 3 and Locations 1100, 1101 and 1145

    1. Refer to Figure.

      2. Galled.

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

        1. Accept

        2. More than in (1)

        1. Repair VRS6091, TASK 72-41-21-300-001 (REPAIR-001)

      3. Scored.

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

        1. Accept

        2. More than in (1)

        1. Repair VRS6091, TASK 72-41-21-300-001 (REPAIR-001)

      4. Location 1100 and 1101.

        1. If the diameter is between 22.359 and 22.362 in. (567.92 and 568.00 mm)

        1. Accept

        2. If the diameter is more than in (1)

        1. Reject

      5. Location 1145.

        1. If the diameter is between 22.551 and 22.555 in. (572.80 and 572.90 mm)

        1. Accept

        2. Less than in (1)

        1. Reject

    3. SUBTASK 72-41-21-220-057 Examine the Front Support Cone Bolt Holes at Locations 5 and 6

    1. Refer to Figure.

      2. Burred edges

      1. Repair, VRS6091, TASK 72-41-21-300-001 (REPAIR-001)

      3. Scratched

      1. Repair, VRS6091, TASK 72-41-21-300-001 (REPAIR-001)

    4. SUBTASK 72-41-21-220-058 Examine the Front Support Cone Location Dowel at Locations 1186 and 1187

    1. Refer to Figure.

      2. Locations 1186 and 1187.

        1. If the diameter of the dowel is between 0.303 to 0.305 in. (7.70 to 7.75 mm)

        1. Accept

        2. If the diameter of the dowel is less than in step (1)

        1. Repair VRS6342, TASK 72-41-21-300-050 (REPAIR-050)

      3. Loose

      1. Repair VRS6342, TASK 72-41-21-300-050 (REPAIR-050)

    5. SUBTASK 72-41-21-220-059 Examine the Front Support Cone Dowel Holes at Locations 4 and 7

    1. Refer to Figure.

      2. Burred edges

      1. Repair, VRS6091, TASK 72-41-21-300-001 (REPAIR-001)

      3. Scratched

      1. Repair, VRS6091, TASK 72-41-21-300-001 (REPAIR-001)

    6. SUBTASK 72-41-21-220-199 Examine the Front Support Cone All Remaining Surfaces

      1. Nicked, dented and scratched.

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

        1. Accept

        2. More than in step A.(1)

        1. Repair, VRS6091, TASK 72-41-21-300-001 (REPAIR-001)

    7. Figure: Front support cone - inspection locations

    Front support cone - inspection locations

Requirements After Job Completion

Follow-On Conditions

NONE