TASK 75-24-49-200-115 LPT ACC Support Assemblies - Examine, Inspection-015

DMC:V2500-A0-75-24-4915-03A-310A-C|Issue No:003.00|Issue Date:2018-02-01

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 75-24-49-200-115 LPT ACC Support Assemblies - Examine, Inspection-015

Effectivity

FIG/ITEM

PART NO.

02-490

3A2350

02-720

3A2355

03-490

3A2365

03-720

3A2362

04-010

3A2337

04-410

3A2358

General

This TASK gives the procedure for the inspection of the support assemblies. For the other LP turbine ACC manifold and tube parts, refer to Inspection-000 TASK 75-24-49-200-100.

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 SPM TASK 70-11-03-300-503.

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.

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 oversized 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.

References

Refer to the SPM for data on these items.

Definitions of Damage, Refer to SPM TASK 70-02-02-350-501.

Record and Control of the Lives of Parts, Refer to SPM TASK 70-05-00-220-501.

Inspection of Parts, Refer to 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 75-24-49-220-109 Examine the Support Assemblies for Cracks

    1. Refer to Figure

      2. Visually examine the support assemblies for cracks

        1. Cracked

        1. Repair, VRS4364 (Repair-019) TASK 75-24-49-300-019.

    2. SUBTASK 75-24-49-220-098 Examine the Support Assemblies for Surface Damage

    1. Refer to Figure

      2. Dented

        1. No limit in the number of dents, with no deterioration to function or assembly

        1. Accept

        2. Other than in Step with deterioration to function or assembly

        1. Reject

      3. Nicked

        1. No limit in the number of nicks, up to maximum 0.005 in. (0.13 mm) depth without lifted material

        1. Accept

        2. Other than in Step

        1. Repair, VRS4363 (Repair-018) TASK 75-24-49-300-018

    3. SUBTASK 75-24-49-220-099 Examine the Support Assemblies for Damage

    1. Refer to Figure

      2. Examine the tube locations of the support assemblies at location A1

        1. Smooth wear pattern, minimum wall thickness 0.016 in. (0.4 mm)

        1. Accept

        2. Other than in Step

        1. Reject

    4. SUBTASK 75-24-49-220-100 Examine the Screw Thread Inserts of the Support Assemblies (02-490, 03-490, 03-720 and 04-010)

    1. Refer to Figure

      2. Examine the support screw inserts

        1. Worn

        1. Repair, VRS4366 (Repair-021) TASK 75-24-49-300-021

        2. Damaged

        1. Repair, VRS4366 (Repair-021) TASK 75-24-49-300-021

        3. Missing

        1. Repair, VRS4366 (Repair-021) TASK 75-24-49-300-021

    5. SUBTASK 75-24-49-220-101 Examine the Blind Rivets of the Support Assemblies

    1. Refer to Figure

      2. Loose

      1. Repair, VRS4365 (Repair-020) TASK 75-24-49-300-020

      3. Damaged

      1. Repair, VRS4365 (Repair-020) TASK 75-24-49-300-020

      4. Missing

      1. Repair, VRS4365 (Repair-020) TASK 75-24-49-300-020

    6. SUBTASK 75-24-49-220-102 Examine the Self Locking Nuts of the Support Assembly

    1. Refer to Figure

      2. Damaged

      1. Repair, VRS4365 (Repair-020) TASK 75-24-49-300-020

      3. Missing

      1. Repair, VRS4365 (Repair-020) TASK 75-24-49-300-020

    7. SUBTASK 75-24-49-220-103 Examine the Half Loop Clamp of the Support Assemblies for Cracks

    1. Refer to Figure

      2. Visually examine

        1. Cracked

        1. Repair, VRS4365 (Repair-020) TASK 75-24-49-300-020

    8. SUBTASK 75-24-49-220-104 Examine the Half Loop Clamp of the Support Assemblies for Cracks

    1. Refer to Figure

      2. Dented

        1. No limit in the number of dents, with no deterioration to function or assembly

        1. Accept

        2. Other than in Step with deterioration to function or assembly

        1. Repair, VRS4365 (Repair-020) TASK 75-24-49-300-020

      3. Nicked

        1. No limit in the number of nicks, up to maximum 0.005 in. (0.13 mm) in depth, without lifted material

        1. Accept

        2. Other than in Step

        1. Repair, VRS4365 (Repair-020) TASK 75-24-49-300-020

      4. Worn

        1. Smooth wear pattern, minimum wall thickness 0.016 in. (0.4 mm)

        1. Accept

        2. Other than in Step

        1. Repair, VRS4365 (Repair-020) TASK 75-24-49-300-020

    9. SUBTASK 75-24-49-220-105 Examine the Rear Flange of the Support Assembly for Surface Damage

    1. Refer to Figure

      2. Worn

        1. Smooth wear pattern, maximum depth up to 0.005 in. (0.13 mm)

        1. Accept

        2. Other than in Step

        1. Repair, VRS4405 (Repair-022) TASK 75-24-49-300-022

    10. Figure: Inspection of the Support Assemblies

    Inspection of the Support Assemblies

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised Subtask Number (Editorial)