TASK 75-23-48-200-404 Turbine Cooling Controlled Air Tubes - Related Parts - Examine the Turbine Cooling Controlled Air Tube Bracket, Inspection-004

DMC:V2500-A0-75-23-4800-03A-310A-C|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 75-23-48-200-404 Turbine Cooling Controlled Air Tubes - Related Parts - Examine the Turbine Cooling Controlled Air Tube Bracket, Inspection-004

Effectivity

FIG/ITEM

PART NO.

04-390

6A7620

04-390

6A7831

04-390

6A8151

General

This TASK gives the procedure for the inspection of the turbine cooling controlled air tube bracket. For the other turbine cooling controlled air tube parts, refer to Inspection-000 TASK 75-23-48-200-400 and Inspection-000 TASK 75-23-48-200-100 in Component Maintenance Manual (CMM-THD-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 the SPM .TASK 70-20-01-200-501.

All the parts must be cleaned before the part is examined. Refer to Cleaning-000 TASK 75-23-48-100-400.

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, SPM 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 75-23-48-230-056 Examine the Bracket for Cracks

    1. Clean the part, refer to Cleaning-000 TASK 75-23-48-100-400.

      2. Do the crack test on the part that is given below. Use the applicable fluorescent penetrant inspection procedure.

        1. Bracket. Refer to SPM TASK 70-23-02-230-501.

          1. Cracked

          1. Reject

    2. SUBTASK 75-23-48-220-091 Examine the Surfaces of the Bracket

      1. Examine all the surfaces

        1. Nicked

          1. Nicked to a depth of 0.002 in. (0.05 mm).

          1. Accept

          2. More than in Step.

          1. Reject

        2. Dented

          1. Dented to a depth of 0.150 in. (3.8 mm) with a large surface area.

          1. Accept

          2. More than in Step.

          1. Reject

        3. Scratched

          1. Scratched to a depth of 0.002 in. (0.05 mm).

          1. Accept

          2. More than in Step.

          1. Reject

    3. SUBTASK 75-23-48-220-092 Examine the Bracket Bolt Holes

      1. Bolt holes burred

      1. Reject

Requirements After Job Completion

Follow-On Conditions

NONE