TASK 75-23-48-200-101 TCA Bleed Valve Solenoid Air Tube - Examine, Inspection-001

DMC:V2500-A0-75-23-4801-00A-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 75-23-48-200-101 TCA Bleed Valve Solenoid Air Tube - Examine, Inspection-001

Effectivity

FIG/ITEM

PART NO.

01-100

5A9141

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-000TASK 75-23-48-200-100 and 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 75-23-48-230-052 Examine the Air Tube Assembly 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. Air tube assembly (01-100). Refer to SPM TASK 70-23-02-230-501.

          1. Cracked

          1. Repair, VRS7001 (Repair-001) SPM TASK 70-35-24-300-501.

    2. SUBTASK 75-23-48-220-055 Examine the Air Tube Assembly Tube Surface

    1. Refer to Figure.

      2. Examine the tube surface at location 1.

        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 (50.80 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 dents within 0.125 in (3.175 mm).

          1. Accept

          3. More than Step or Step.

          1. Repair, VRS1655 (Repair-004) TASK 75-23-48-300-004.

        2. Dented

          1. In area of bend, or within 0.500 in. (12.70 mm) of bend or fitting.

          1. Repair, VRS7001 (Repair-001) SPM TASK 70-35-24-300-501

          2. In areas other than Step: Of large smooth area if the maximum diameter is ten times the depth and bore is not decreased by more than ten per cent at any one point.

          1. Accept

          3. In areas other than Step: Of small smooth area, that is up to 0.124 sq in (80.0 sq mm) if depth is not more than 0.025 in. (0.64 mm).

          1. Accept

          4. More than in Step or Step.

          1. Repair, VRS7001 (Repair-001) SPM TASK 70-35-24-300-501

        3. Nicked

          1. On the outer surface of a bend

          1. Repair, VRS7001 (Repair-001) SPM TASK 70-35-24-300-501

          2. In areas other than Step: Any nicks.

          1. Repair, VRS1655 (Repair-004) TASK 75-23-48-300-004.

        4. Galled

          1. On the outer surface of a bend.

          1. Repair, VRS7001 (Repair-001) SPM TASK 70-35-24-300-501

          2. In areas other than Step: Any galls.

          1. Repair, VRS1655 (Repair-004) TASK 75-23-48-300-004.

    3. SUBTASK 75-23-48-220-056 Examine the Air Tube Assembly Tube Bore

    1. Refer to Figure.

      2. Examine the tube bore at location 2.

        1. Plugged

        1. Clean with dry air blast.

    4. SUBTASK 75-23-48-220-057 Examine the Air Tube Assembly Ferrule

    1. Refer to Figure.

      2. Examine the ferrule at location 3.

        1. Sealing face

          1. Galled

          1. Repair, VRS1655 (Repair-004) TASK 75-23-48-300-004.

    5. SUBTASK 75-23-48-220-058 Examine the Air Tube Assembly Swivel Nut

    1. Refer to Figure.

      2. Examine the swivel nut at location 4.

        1. Threads

          1. Pick-up

          1. Repair, VRS1655 (Repair-004) TASK 75-23-48-300-004.

          2. Crossed

          1. Repair, VRS7001 (Repair-001) SPM TASK 70-35-24-300-501

          3. Stripped

          1. Repair, VRS7001 (Repair-001) SPM TASK 70-35-24-300-501

    6. Figure: Locations On The Bleed Valve Solenoid Air Tube Assembly

    Locations On The Bleed Valve Solenoid Air Tube Assembly

Requirements After Job Completion

Follow-On Conditions

NONE