TASK 72-42-20-200-110 No. 4 Bearing Compartment Weep Oil Tubes - Examine The Outer Tube, Inspection-010

DMC:V2500-A0-72-42-2031-00A-310A-C|Issue No:004.00|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 72-42-20-200-110 No. 4 Bearing Compartment Weep Oil Tubes - Examine The Outer Tube, Inspection-010

Effectivity

FIG/ITEM

PART NO.

03-040

2A0367-01

03-040

2A2873-01

03-040

2A3587-01

General

This TASK gives the procedure for the inspection of the No. 4 bearing and airframe outer tube 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 2P16245 Pressure test adapter0AM53IAE 2P162451 off
IAE 2P16246 Pressure test plug0AM53IAE 2P162461 off

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-42-20-230-060-001 Examine the No. 4 Bearing and Airframe Outer Tube Assembly (03-040) 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 outer tube assembly. Refer to SPM TASK 70-23-01-230-501 (Dip or Spray).

          1. Cracked

          1. Reject

    2. SUBTASK 72-42-20-230-060-002 Examine the No. 4 Bearing and Airframe Outer Tube Assembly (03-040) 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 outer tube assembly. Refer to SPM TASK 70-23-08-230-501 (Dip or Spray).

          1. Cracked

          1. Reject

    3. SUBTASK 72-42-20-220-069 Examine the No. 4 Bearing and Airframe Outer Tube Assembly (03-040) for Dents, Nicks and Kinks

    1. Refer to Figure.

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

        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.

        4. Nicks

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

        5. Kinks

        1. Reject

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

    4. SUBTASK 72-42-20-220-070 Examine the No. 4 Bearing and Airframe Outer Tube Assembly (03-040) for Damage on the Round End Connector and Seat

    1. Refer to Figure.

      2. Examine the tube assembly at location 1 for damage on the round end connector and seat.

        1. High material

        1. Reject

    5. SUBTASK 72-42-20-220-115 Examine the No. 4 Bearing and Airframe Outer Tube Assembly (03-040) for Wear on the Connector at the Seal Ring Grooves and Body

    1. Refer to Figure.

      2. Examine the tube assembly at location 2 for wear on the connector

        1. Dimension Y less than 0.051 in. (1.30 mm).

        1. Accept

        2. Other than Step

        1. Reject

        3. Dimension X less than 0.066 in. (1.68 mm).

        1. Accept

        4. Other than Step

        1. Reject

        5. Dimension A damage or wear

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

      3. Examine the tube assembly at location 3 for wear on the connector.

        1. Wear that is less than 0.005 in. (0.13 mm) in depth.

        1. Accept

        2. Wear less than 0.060 in. (1.52 mm) in depth.

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

        3. Other than Step or Step.

        1. Reject

    6. SUBTASK 72-42-20-220-071 Examine the No. 4 Bearing and Airframe Outer Tube Assembly (03-040) 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 2P16246 Pressure test plug 1 off onto the opposite end of the tube.

      4. 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

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

    7. SUBTASK 72-42-20-220-072 Examine the No.4 Bearing Weep Tube Diameter (03-040) at location 2074

      Pre SB 72-0168

      1. Diameter

        1. If the diameter is between 0.6190 and 0.6225 in. (15.723 and 15.8115 mm)

        1. Accept

        2. Other than Step

        1. Reject

    8. SUBTASK 72-42-20-220-073 Examine the No.4 Bearing Weep Tube diameter (03-040) at location 2074

      SB 72-0168

      1. Diameter

        1. If the diameter is between 0.639 and 0.641 in. (16.231 and 16.281 mm)

        1. Accept

        2. Other than Step

        1. Reject

    9. Figure: No. 4 Bearing and Airframes Outer Tube Assembly Inspection Locations

    No. 4 Bearing and Airframes Outer Tube Assembly Inspection Locations

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 2P16246
Tool Name:IAE 2P16246 Pressure test plug