TASK 72-00-43-220-002 No. 4 Bearing And Rear Compartment Assembly - Examine The No. 4 Bearing And Rear Compartment Parts Rear Face At Interface L-43, Inspection-002

DMC:V2500-A0-72-00-4300-01A-310A-B|Issue No:001.00|Issue Date:2014-05-01

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 72-00-43-220-002 No. 4 Bearing And Rear Compartment Assembly - Examine The No. 4 Bearing And Rear Compartment Parts Rear Face At Interface L-43, Inspection-002

General

The word 'reject' after an interface inspection statement requires that further detailed inspection or repair as applicable, of the affected area be accomplished using data in the applicable ATA section of the part in question. Contact IAE for FAA approved data if the referenced TASK is not in the manual.

Refer to TASK 72-00-00-200-001 (examine the modular/non-modular interfaces) before you do this TASK.

The policy that is necessary for inspection is given in TASK 70-20-01-200-001.

Interface limit definitions

Nick - A small areas of local displacement of metal usually caused by contact with another object. There is no distortion to the adjacent metal.

Dent - A surface depression made by contact with another object and can possibly have local distortion of the adjacent metal.

Warp - A local area of metal twisted or damaged from its original shape. For this applicable function, warps cause metal movement of less than 0.050in. (0.270 mm).

Distortion - An area (larger than a warp) of metal damaged from its original shape. For this applicable function, distortion can cause metal movement more than 0.050in. (0.270 mm).

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-00-43-220-056 Visually Examine the No. 4 Bearing Support Bolt Holes at Location 1

    1. NOTE

      If the stage 1 turbine nozzle assembly was removed (Refer to TASK 72-00-44-020-001-001), you can do the inspection that follows.

      Refer to Figure.

      2. Bolt holes with less than 0.010 in. (0.254 mm) wear. Worn surfaces must be smooth and gradual. No sharp edges, grooves or high metal is permitted.

      1. Accept

      3. Cracks

      1. Reject

    2. SUBTASK 72-00-43-220-057 Visually Examine the No. 4 Bearing Rear Compartment Heatshield at Location 2

    1. NOTE

      If the stage 1 turbine nozzle assembly was removed (Refer to TASK 72-00-44-020-001-001), you can do the inspection that follows.

      Refer to Figure

      2. Dents.

        1. Up to 0.050 in. (1.27 mm) in depth

        1. Accept

        2. Other than Step

        1. Reject

      3. Cracks

      1. Reject

      4. Loose or missing nuts

      1. Reject

    3. Figure: Locations at interface L-43

    Locations at interface L-43

Requirements After Job Completion

Follow-On Conditions

NONE