TASK 72-42-20-200-105 No. 4 Bearing Scavenge Oil Tube - Examine, Inspection-005

DMC:V2500-A0-72-42-2021-00A-310A-C|Issue No:002.00|Issue Date:2020-11-01

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 72-42-20-200-105 No. 4 Bearing Scavenge Oil Tube - Examine, Inspection-005

Effectivity

FIG/ITEM

PART NO.

02-020

2A0830-01

02-020

2A0830-001

02-020

2A1949-01

02-020

2A2028-01

02-020

2A2074-01

02-020

2A2274-01

02-020

2A4379-01

General

This TASK gives the procedure for the inspection of the No. 4 bearing scavenge tube. 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 70-20-01-200-501.

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 inspected.

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

NameManufacturerPart Number / IdentificationQuantityRemark
IAE 2P16248 Pressure test adapter0AM53IAE 2P162481 off
IAE 2P16249 Pressure test plug0AM53IAE 2P162491 off

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-42-20-220-082 Examine the No. 4 Bearing Scavenge Tube (02-020) for the Thickness of the Lower Lip

    1. Refer to Figure.

      2. Examine the tube at location 1 for the thickness of the lower lip.

        1. If the thickness of the lower lip is between 0.124 and 0.126 in. (3.15 and 3.20 mm).

        1. Accept

        2. Other than Step.

        1. Repair, VRS3759 (Repair-025) TASK 72-42-20-300-025.

    2. SUBTASK 72-42-20-220-083 Examine the No. 4 Bearing Scavenge Tube (02-020) for Leaks

    1. Refer to Figure.

    2. Install IAE 2P16248 Pressure test adapter 1 off onto the tube connector. Attach standard pressure test equipment to the adapter.

    3. Install IAE 2P16249 Pressure test plug 1 off onto the opposite end of the tube.

      4. Do a pressure test with water at 225 to 248 psig (1551.32 to 1709.90 kPa) and hold for 10 minutes.

        1. Leaks

        1. Repair, VRS3759 TASK 72-42-20-300-025 (REPAIR-025).

    5. Remove the pressure test plug and the pressure test adapter from the ends of the tube.

    3. SUBTASK 72-42-20-230-067-001 Examine the No. 4 Bearing Scavenge Tube with Heatshields (02-020) for Cracks

    1. Refer to Figure and Figure.

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

        1. Do the test for cracks on the part that is given below. Use the applicable penetrant procedure.

          1. No. 4 bearing scavenge tube. Refer to SPM TASK 70-23-08-230-501. Do not immerse.

            1. Cracks

            1. Heatshield

              Repair, VRS3759 TASK 72-42-20-300-025 (REPAIR-025) or Repair, VRS3775 TASK 72-42-20-300-027 (REPAIR-027) or Repair, VRS3832 TASK 72-42-20-300-028 (REPAIR-028).

            2. Other than Step.

              Repair, VRS3759 TASK 72-42-20-300-025 (REPAIR-025) per applicable part numbers.

              For PN 2A4379-01 only, reject.

    4. SUBTASK 72-42-20-230-067-002 Examine the No. 4 Bearing Scavenge Tube without Heatshields (02-020) for Cracks

    1. Refer to Figure.

      2. Clean the part. Refer to Cleaning-010 TASK 72-42-20-100-110 or Cleaning-022 TASK 72-42-20-100-122.

        1. Do the test for cracks on the part that is given below. Use the applicable penetrant procedure.

          1. No. 4 bearing scavenge tube. Refer to SPM TASK 70-23-08-230-501.

            1. Cracks to welds

            1. Repair, VRS3759 (Repair-025) TASK 72-42-20-300-025.

            2. If you find cracks

            1. Scrap

    5. SUBTASK 72-42-20-220-084 Examine the No. 4 Bearing Scavenge Tube (02-020) for the Thickness of the Lower Lip

    1. Refer to Figure.

      2. Examine the tube at location 1 for the thickness of the lower lip

        1. If the thickness of the lower lip is between 0.124 and 0.126 in. (3.15 and 3.20 mm).

        1. Accept

        2. Other than Step.

        1. Repair, VRS3759 (Repair-025) TASK 72-42-20-300-025

    6. SUBTASK 72-42-20-220-085 Examine the No. 4 Bearing Scavenge Tube (02-020) for Dents, Nicks, Scratches and Wear

    1. Refer to Figure.

      2. Examine the tube for dents, nicks, scratches and wear

        1. Dents

          1. Not more than 0.040 in. (1.02 mm) in depth and 0.500 in. (12.70 mm) in length and without a sharp bottom.

          1. Accept

          2. Other than Step.

          1. Repair, VRS3759 (Repair-025) TASK 72-42-20-300-025

        2. Nicks and scratches

          1. Not more than 0.005 in. (0.13 mm) in depth with no high metal. No nicks or scratches on the sheet metal section at location 2.

          1. Accept

          2. Other than Step.

          1. Repair, VRS3759 TASK 72-42-20-300-025 (REPAIR-025).

        3. Wear

          1. Any wear that indicates the tube rubs on the inside of the diffuser case strut.

          1. Repair, VRS3759 (Repair-025) TASK 72-42-20-300-025.

    7. SUBTASK 72-42-20-220-086 Examine the No. 4 Bearing Scavenge Tube (02-020) for Leaks

    1. Refer to Figure.

    2. Install IAE 2P16248 Pressure test adapter 1 off onto the tube connector. Attach standard pressure test equipment to the adapter.

    3. Install IAE 2P16249 Pressure test plug 1 off onto the opposite end of the tube.

      4. Do a pressure test with water at 225 to 248 psig (1551.32 to 1709.90 kPa) and hold for 10 minutes

        1. Leaks

        1. Repair, VRS3759 TASK 72-42-20-300-025 (REPAIR-025).

    5. Remove the pressure test plug and the pressure test adapter from the ends of the tube.

    8. SUBTASK 72-42-20-220-099 Examine the No. 4 Bearing Scavenge Tube (02-020) for Nicks and Scratches on the Mating Surfaces

    1. Refer to Figure.

      2. Examine the tube at locations 1 and 4 for nicks and scratches on the mating surfaces.

        1. Nicks and scratches that are not radial across the gasket mating surfaces.

        1. Accept

        2. Radial scratches across the gasket mating surfaces.

        1. Repair, VRS3759 TASK 72-42-20-300-025 (REPAIR-025) per applicable part numbers.

        2. For PN 2A4379-01 only, reject.

    9. SUBTASK 72-42-20-220-100 Examine the No. 4 Bearing Scavenge Tube (02-020) for Dents, Nicks, Scratches, Wear and Looseness on the Heatshields

    1. Refer to Figure.

      2. Examine the tube at location 2 for dents, nicks, scratches, wear and looseness on the heatshields.

        1. Dents

          1. Not more than 0.030 in. (0.76 mm) in depth, 0.500 in. (12.70 mm) in length and with a smooth bottom.

          1. Accept

          2. Other than Step.

          1. Repair, VRS3759 TASK 72-42-20-300-025 (REPAIR-025) or Repair, VRS3832 TASK 72-42-20-300-028 (REPAIR-028).

        2. Nicks and scratches

          1. Not more than 0.005 in. (0.13 mm) in depth with no high metal.

          1. Accept

          2. Other than Step.

          1. Repair, VRS3759 TASK 72-42-20-300-025 (REPAIR-025) or Repair, VRS3832 TASK 72-42-20-300-028 (REPAIR-028).

        3. Wear that indicates the tube rubs on the inside of the diffuser case strut and is more than 0.010 in. (0.25 mm) in depth

        1. Repair, VRS3759 TASK 72-42-20-300-025 (REPAIR-025) or Repair, VRS3832 TASK 72-42-20-300-028 (REPAIR-028).

        4. Looseness not allowed

        1. Repair, VRS3759 TASK 72-42-20-300-025 (REPAIR-025) or Repair, VRS3832 TASK 72-42-20-300-028 (REPAIR-028).

    10. SUBTASK 72-42-20-220-101 Examine the No. 4 Bearing Scavenge Tube (02-020) for the Thickness of the Lower Lip

    1. Refer to Figure.

      2. Examine the tube at location 3 for the thickness of the lower lip

        1. If the thickness of the lower lip is between 0.124 and 0.126 in. (3.15 and 3.20 mm)

        1. Accept

        2. Other than Step.

        1. Repair, VRS3759 TASK 72-42-20-300-025 (REPAIR-025) per applicable part numbers.

        2. For PN 2A4379-01 only, reject.

    11. SUBTASK 72-42-20-220-102 Examine the No. 4 Bearing Scavenge Tube (02-020) for Damage on the Lower Lip and Groove

    1. Refer to Figure.

      2. Examine the tube at location 5 for damage on the lower lip and groove.

        1. Nicks and scratches

          1. Not more than 0.005 in. (0.13 mm) in depth with no high metal.

          1. Accept

          2. Other than Step.

          1. Repair, VRS3759 TASK 72-42-20-300-025 (REPAIR-025) per applicable part numbers.

          2. For PN 2A4379-01 only, reject.

        2. Dents and distortion

          1. If the lip is in limits dimensionally, the lock plates engage freely and there is no high metal.

          1. Accept

          2. Other than Step.

          1. Repair, VRS3759 TASK 72-42-20-300-025 (REPAIR-025) per applicable part numbers.

          2. For PN 2A4379-01 only, reject.

    12. SUBTASK 72-42-20-220-103 Examine the No. 4 Bearing Scavenge Tube (02-020) for Leaks

    1. Refer to Figure.

    2. Install IAE 2P16248 Pressure test adapter 1 off onto the tube connector. Attach standard pressure test equipment to the adapter.

    3. Install IAE 2P16249 Pressure test plug 1 off onto the opposite end of the tube.

      4. Do a pressure test with water at 225 to 248 psig (1551.32 to 1709.90 kpa) and hold for 10 minutes

        1. Leaks

        1. Repair, VRS3759 TASK 72-42-20-300-025 (REPAIR-025) or Repair, VRS3775 TASK 72-42-20-300-027 (REPAIR-027) per applicable part numbers.

        2. For PN 2A4379-01 only, reject.

    5. Remove the pressure test plug and the pressure test adapter from the ends of the tube.

    13. Figure: No. 4 Bearing Scavenge Tube (PN 2A0830-01 and 2A1949-01) Inspection Locations

    No. 4 Bearing Scavenge Tube (PN 2A0830-01 and 2A1949-01) Inspection Locations

    Figure: No.4 Bearing Scavenge Tube (PN 2A0830-001 and 2A2028-01) Inspection Locations

    No.4 Bearing Scavenge Tube (PN 2A0830-001 and 2A2028-01) Inspection Locations

    Figure: No. 4 Bearing Scavenge Tube (PN 2A2074-01, 2A2274-01 and 2A4379-01) Inspection Locations

    No. 4 Bearing Scavenge Tube (PN 2A2074-01, 2A2274-01 and 2A4379-01) Inspection Locations

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised the effectivity table, procedural steps and figure title. (15VC485)

Manufacturer Code:0AM53
Enterprise Name:IAE INTERNATIONAL AERO ENGINES AG
BU Name:NULL
Building:SUITE 400
Street:628 HEBRON AVENUE
City:GLASTONBURY
State:CT
Zip Code:06033
Country:USA
Manufacturer Code:0AM53
Tool Number:IAE 2P16248
Tool Name:IAE 2P16248 Pressure test adapter
Manufacturer Code:0AM53
Tool Number:IAE 2P16249
Tool Name:IAE 2P16249 Pressure test plug