TASK 72-42-20-200-106 No. 4 Bearing Scavenge Oil Tube Heat Shield - Examine, Inspection-006

DMC:V2500-A0-72-42-2022-00A-310A-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 72-42-20-200-106 No. 4 Bearing Scavenge Oil Tube Heat Shield - Examine, Inspection-006

Effectivity

FIG/ITEM

PART NO.

02-140

2A0458

02-380

2A0922-01

02-400

2A0923-01

General

This TASK gives the procedure for the inspection of the No.4 bearing scavenge tube heat shield. For the other parts of the No.4 bearing compartment tubes, refer to Inspection-000 TASK 72-42-20-200-100.

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 70-20-00-200-501.

All the parts must be cleaned before any part is examined. Refer to the SPM TASK 70-10-00-100-501.

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 or Step Do the 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 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

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-42-20-230-068-001 Examine the No. 4 Bearing Scavenge Tube Heat Shield (02-140) for Cracks

    1. Clean the part. Refer to the Cleaning-000 TASK 72-42-20-100-100.

      2. Do the test for cracks on the part that is given below. Use the applicable penetrant procedures.

        1. No. 4 bearing scavenge tube heat shield. Refer to SPM TASK 70-23-01-230-501 (Dip or Spray).

          1. Cracked

          1. Reject

    2. SUBTASK 72-42-20-230-068-002 Examine the No. 4 Bearing Scavenge Tube Heat Shield (02-140) for Cracks

    1. Clean the part. Refer to the Cleaning-000 TASK 72-42-20-100-100.

      2. Do the test for cracks on the part that is given below. Use the applicable penetrant procedures.

        1. No. 4 bearing scavenge tube heat shield. Refer to SPM TASK 70-23-02-230-501 (Dip or Spray).

          1. Cracked

          1. Reject

    3. SUBTASK 72-42-20-220-087 Examine the No. 4 Bearing Scavenge Tube Heat Shield (02-140) for Nicks, Dents, Fretting, Galling and Cracks

    1. Refer to Figure.

      2. Examine the heat shield for nicks and dents.

        1. Nicks or dents at location 1 or 2

        1. Reject

        2. Dents at locations other than location 1 or 2

          1. Up to 0.030 in. (0.762 mm) in depth. Dents must be smooth and gradual with no crack indications.

          1. Accept

          2. Other than Step

          1. Reject

        3. Nicks at locations other than location 1 or 2

          1. Up to 0.004 in. (0.102 mm) in depth

          1. Accept

          2. Other than Step.

          1. Reject

      3. Examine the heat shield at locations 3 and 4 for fretting and galling.

        1. Fretting or galling

        1. Reject

      4. Examine the heat shield for cracks..

        1. Cracks

        1. Reject

    4. SUBTASK 72-42-20-220-088 Examine the No. 4 Bearing Scavenge Tube Heat Shield (02-140) for the Inside Diameter of the Sealing Area

    1. Refer to Figure.

      2. Examine the heat shield at location 5 for the inside diameter of the sealing area.

        1. If the inside diameter is between 1.9445 and 1.9485 in. (49.39 and 49.49 mm).

        1. Accept

        2. Other than Step.

        1. Reject

    5. SUBTASK 72-42-20-220-089 Examine the No. 4 Bearing Scavenge Tube Heat Shield (02-380) for Nicks, Dents and Cracks

    1. Refer to Figure.

      2. Examine the heat shield for nicks, dents and cracks.

        1. Dents

          1. Up to 0.050 in. (1.27 mm) in depth. Dents must be smooth and gradual with no crack indications.

          1. Accept

          2. Other than Step

          1. Reject

        2. Nicks

          1. Up to 0.005 in. (0.127 mm) in depth on the outer surface only.

          1. Accept

          2. Other than Step

          1. Reject

        3. Cracks

        1. Reject

    6. SUBTASK 72-42-20-220-090 Examine the No. 4 Bearing Scavenge Tube Heat Shield (02-380) for Wear in the Wire Wrap Area

    1. Refer to Figure.

      2. Examine the heat shield at location 1 for wear in the wire wrap area.

        1. Up to 0.005 in. (0.127 mm) in depth

        1. Accept

        2. Other than Step.

        1. Reject

    7. SUBTASK 72-42-20-220-091 Examine the No. 4 Bearing Scavenge Tube Heat Shield (02-400) for Nicks, Dents and Cracks

    1. Refer to Figure.

      2. Examine the heat shield for nicks, dents and cracks.

        1. Dents

          1. Up to 0.050 in. (1.27 mm) in depth. Dents must be smooth and gradual with no crack indications.

          1. Accept

          2. Other than Step

          1. Reject

        2. Nicks

          1. Up to 0.005 in. (0.127 mm) in depth on the outer surface only.

          1. Accept

          2. Other than Step

          1. Reject

        3. Cracks

        1. Reject

    8. SUBTASK 72-42-20-220-092 Examine the No. 4 Bearing Scavenge Tube Heat Shield (02-400) for Wear in the Wire Wrap Area

    1. Refer to Figure.

      2. Examine the heat shield at location 1 for wear in the wire wrap area.

        1. Up to 0.005 in. (0.127 mm) in depth

        1. Accept

        2. Other than Step.

        1. Reject

    9. Figure: No. 4 Bearing Scavenge Tube Heat Shield (02-140) Inspection Locations

    No. 4 Bearing Scavenge Tube Heat Shield (02-140) Inspection Locations

    Figure: No. 4 Bearing Scavenge Tube Heat Shield (02-380) Inspection Locations

    No. 4 Bearing Scavenge Tube Heat Shield (02-380) Inspection Locations

    Figure: No. 4 Bearing Scavenge Tube Heat Shield (02-400) Inspection Locations

    No. 4 Bearing Scavenge Tube Heat Shield (02-400) Inspection Locations

Requirements After Job Completion

Follow-On Conditions

NONE