TASK 75-23-48-200-104 TCA PS3 Cooling Air Tubes, Examine The Nickel Alloy Air Tubes, Inspection-004

DMC:V2500-A0-75-23-4803-00A-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 75-23-48-200-104 TCA PS3 Cooling Air Tubes, Examine The Nickel Alloy Air Tubes, Inspection-004

Effectivity

FIG/ITEM

PART NO.

04-100

5W2559

04-500

5W2558

General

This TASK gives the procedure to clean the PS3 cooling air tube. For the other turbine cooling controlled air tube parts, refer to Inspection-000 TASK 75-23-48-200-100and Inspection-000 in the Component Maintenance Manual (CMM-MECH-V2500-1IA)

Fig./item numbers in parentheses in the procedure agree with those used in the IPC. Only the primary Fig./item numbers are used. For the service bulletin alpha variants refer to 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 Cleaning-000 TASK 75-23-48-100-100.

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 relevant SUBTASK. Do the crack 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 must 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/SUBTASK number are in the SPM..

NOTE

The consumable materials are given in the related SPM TASK.

References

Refer to the SPM for data on these items.

Definitions of Damage - Specified Types of Damage,TASK 70-02-02-350-501.

Inspection Policy and 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

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 75-23-48-230-051 Examine the PS3 Cooling Tubes for Cracks

    1. Clean the part. Refer to Cleaning-000 TASK 75-23-48-100-100.

      2. Do the test for cracks on the parts that are given below. Use the applicable penetrant procedure.

        1. PS3 cooling tubes (75-23-48,04-100) and (75-23-48,04-500). Refer to SPM TASK 70-23-05-230-501

          1. Cracked

          1. Reject

    2. SUBTASK 75-23-48-220-051 Examine the PS3 Cooling Air Tubes Surfaces

    1. Refer to Figure.

      2. Examine the PS3 cooling air tubes surfaces.

        1. Pitted

          1. Unlimited number of pits not more than 0.0010 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 (50.80 mm) length of tubing; not more than 0.003 in (0.075 mm) in depth, 0.062 in (1.57 mm) in length and 0.010 in (0.25 mm) in width and no other pits in 0.1250 in. (3.175 mm) area.

          1. Accept

          3. Other than Step or Step.

          1. Repair, VRS1660, (Repair-001) TASK 75-23-48-300-001.

        2. Nicked

          1. All nicks

          1. Repair, VRS1660, (Repair-001) TASK 75-23-48-300-001.

        3. Scratched/Scored

          1. All scratches or scores

          1. Repair, VRS1660, (Repair-001) TASK 75-23-48-300-001.

        4. Dented

          1. Maximum of two dents per each 12.00 in. (304.8 mm) length of tubing, not more than five percent of nominal tube OD in depth.

          1. Accept

          2. Other than Step.

          1. Repair, VRS1660, (Repair-001) TASK 75-23-48-300-001.

        5. Wrinkle

          1. Maximum of three wrinkles per part, not more than 0.020 in. (0.50 mm) from the highest to the lowest point of the wrinkle.

          1. Accept

          2. More than Step.

          1. Reject

    3. SUBTASK 75-23-48-220-052 Examine the PS3 Cooling Air Tubes Thread

    1. Refer to Figure.

      2. Examine the thread at location 1.

        1. Damaged

          1. On union nut with thrust wire.

          1. Reject

          2. On other part

          1. Reject

    4. SUBTASK 75-23-48-220-053 Examine the PS3 Cooling Air Tubes Conical Seat

    1. Refer to Figure.

      2. Examine the conical seat at location 2.

        1. Worn

        1. Reject

    5. SUBTASK 75-23-48-220-054 Examine the PS3 Cooling Air Tubes Spherical Seat

    1. Refer to Figure.

      2. Examine the spherical seat at location 3.

        1. Worn

        1. Reject

    6. Figure: Inspection Of The PS3 Cooling Air Tube

    Inspection Of The PS3 Cooling Air Tube

Requirements After Job Completion

Follow-On Conditions

NONE