TASK 72-42-20-200-111 No. 4 Bearing Compartment Weep Oil Tubes - Examine The Inner Tube, Inspection-011

DMC:V2500-A0-72-42-2031-01A-310A-C|Issue No:002.00|Issue Date:2021-02-01

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 72-42-20-200-111 No. 4 Bearing Compartment Weep Oil Tubes - Examine The Inner Tube, Inspection-011

Effectivity

FIG/ITEM

PART NO.

03-240

2A0977-01

03-240

2A2495-01

General

This TASK gives the procedure for the inspection of the No. 4 bearing and airframe inner manifold assembly. For the other part 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 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 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.

NOTE

Special tools are identified in the procedure by the tool primary number.

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.

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

NameManufacturerPart Number / IdentificationQuantityRemark
IAE 2P16443 Pressure test plug0AM53IAE 2P164431 off
IAE 2P16245 Pressure test adapter0AM53IAE 2P162451 off
IAE 2P16250 Pressure test plug0AM53IAE 2P162502 off

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-42-20-230-061-001 Examine the No. 4 Bearing and Airframe Inner Manifold Assembly (03-240) for Cracks

    1. Clean the part. Refer to 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 inspection procedure.

        1. No. 4 bearing and airframe inner manifold assembly. Refer to SPM TASK 70-23-03-230-501 (Dip or Spray).

          1. Cracked

          1. Reject

    2. SUBTASK 72-42-20-230-061-002 Examine the No. 4 Bearing and Airframe Inner Manifold Assembly (03-240) for Cracks

    1. Clean the part. Refer to 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 inspection procedure.

        1. No. 4 bearing and airframe inner manifold assembly. Refer to SPM TASK 70-23-08-230-501 (Dip or Spray).

          1. Cracked

          1. Reject

    3. SUBTASK 72-42-20-220-072 Examine the No. 4 Bearing and Airframe Inner Manifold Assembly (03-240) for Dents, Nicks and Kinks

    1. Refer to Figure.

      2. Examine the manifold assembly for dents, nicks and kinks.

        1. Pitted

          1. Unlimited number of pits not more than 0.001 in. (0.025 mm) in depth, 0.062 in. (1.57 mm) in length and 0.010 in. (0.25 mm) in width

          1. Accept

          2. Maximum of three pits for each 2.00 in. (50.8 mm) length of tubing; not more than 0.003 in. (0.075 mm) in depth, 0.062 in. (1.57 mm) in length, 0.010 in. (0.25 mm) in width and no other dents within 0.125 in. (3.175 mm)

          1. Accept

          3. Other than in Step or Step.

          1. Repair, VRS3018 (Repair-007) TASK 72-42-20-300-007.

        2. Nicks

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

          1. Accept

          2. Other than in Step.

          1. Repair, VRS3653 (Repair-019) TASK 72-42-20-300-019.

        3. Dents

          1. Up to 0.025 in. (0.635 mm) in depth. Dent must be smooth and continuous with no cracks.

          1. Accept

          2. Other than Step.

          1. Reject

        4. Kinks

        1. Reject

    4. SUBTASK 72-42-20-220-073 Examine the No. 4 Bearing and Airframe Inner Manifold Assembly (03-240) for Leaks

    1. Refer to Figure.

    2. Install IAE 2P16245 Pressure test adapter 1 off onto the tube connector. Attach standard pressure test equipment to the adapter.

    3. Install IAE 2P16250 Pressure test plug 1 off onto the sleeved end of the tube.

    4. Install IAE 2P16443 Pressure test plug 1 off onto the curved end of the tube.

      5. Do a pressure test with water or oil at 225 psig to 246 psig (1551.32 kpa to 1696.11 kpa) and hold for 10 minutes.

        1. Leaks

        1. Reject

    6. Remove the two pressure test plugs and the pressure test adapter from the ends of the tube.

    5. Figure: No. 4 bearing and airframes inner manifold assembly inspection location

    No. 4 bearing and airframes inner manifold assembly inspection location

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised the procedural step. (20VC254)

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 2P16245
Tool Name:IAE 2P16245 Pressure test adapter
Manufacturer Code:0AM53
Tool Number:IAE 2P16250
Tool Name:IAE 2P16250 Pressure test plug
Manufacturer Code:0AM53
Tool Number:IAE 2P16443
Tool Name:IAE 2P16443 Pressure test plug