TASK 71-21-11-200-003 Thrust Mount Brackets - Examine, Inspection-003

DMC:V2500-A0-71-21-1103-00A-300A-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 71-21-11-200-003 Thrust Mount Brackets - Examine, Inspection-003

Effectivity

FIG/ITEM

PART NO.

01-500

5A0390

01-500

5A1422

01-500

5A1431

01-500

5A8695

01-700

5A0391

01-700

5A1423

01-700

5A1432

01-700

5A8696

General

This TASK gives the procedure for the inspection of the thrust mount bracket assemblies. For the other forward mount support parts, refer to TASK 71-21-11-200-000 (INSPECTION/CHECK-000).

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 any part is examined. Refer to TASK 71-21-11-100-000 (CLEANING-000).

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 Step. Do the test before the part is visually examined. Limits for cracks are given in the SUBTASK for each part.

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 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, SPM TASK 70-02-02-350-501

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 71-21-11-240-052 Examine the Thrust Mount Bracket Assemblies (01-500 and 01-700) for Cracks

    1. Clean the parts. Refer to TASK 71-21-11-100-000 (CLeaning-000).

      2. Do the crack test on the parts that are given below.

        PART IDENT

        TASK/SUBTASK

        Thrust mount bracket assembly

        1. Cracked

        1. Reject

    2. SUBTASK 71-21-11-220-066 Examine the Thrust Mount Bracket Assemblies (01-500 and 01-700) Bushings

    1. Refer to Figure.

      2. Examine the bushings at location 1.

        1. Scored.

          1. Up to 0.003 in. (0.076 mm) in depth. If there are not more than three scores in one bush

          1. Accept

          2. More than in Step

          1. Repair, VRS1105 TASK 71-21-11-300-007 (REPAIR-007)

        2. Loose

        1. Repair, VRS1105 TASK 71-21-11-300-007 (REPAIR-007)

        3. Worn

          1. If the inside diameter is between 0.7507 and 0.7512 in. (19.068 and 19.081 mm)

          1. Accept

          2. More than 0.7512 in. (19.081 mm)

          1. Repair, VRS1105 TASK 71-21-11-300-007 (REPAIR-007)

        4. Missing dry film lubricant

        1. Repair, VRS1104 TASK 71-21-11-300-001 (REPAIR-001)

    3. SUBTASK 71-21-11-220-067 Examine the Thrust Mount Bracket Assemblies (01-500 and 01-700) Support Lugs

    1. Refer to Figure.

      2. Examine the support lugs at location 2.

        1. Cracked

        1. Reject

        2. Nicked

        1. Repair, VRS1106 TASK 71-21-11-300-008 (REPAIR-008)

        3. Dented

        1. Repair, VRS1106 TASK 71-21-11-300-008 (REPAIR-008)

    4. SUBTASK 71-21-11-220-068 Examine the Thrust Mount Bracket Assemblies (01-500 and 01-700) Face

    1. Refer to Figure.

      2. Examine the face at location 3.

        1. Galled

        1. Repair, VRS1106 TASK 71-21-11-300-008 (REPAIR-008)

    5. SUBTASK 71-21-11-220-069 Examine the Thrust Mount Bracket Assemblies (01-500 and 01-700) Outside Diameter

    1. Refer to Figure.

      2. Examine the outside diameter at location 4.

        1. Worn.

          1. If the outside diameter is between 1.7304 and 1.7319 in. (43.950 and 43.991 mm)

          1. Accept

          2. Less than in Step

          1. Reject

          3. NOTE

            If outside diameter on P/N 5A8695 and P/N 5A8696, No. 2 and No. 10 struts thrust mount brackets are between 1.7304 and 1.7319 in. (43.950 and 43.991 mm), the brackets can be reworked by SB-ENG-72-0045.

            Missing dry film lubricant

          1. Repair VRS1107 TASK 71-21-11-300-010 (REPAIR-010)

          4. Burrs

          1. Repair VRS1106 TASK 71-21-11-300-008 (REPAIR-008)

    6. SUBTASK 71-21-11-220-070 Examine the Thrust Mount Bracket Assemblies (01-500 and 01-700) Bolt Holes

    1. Refer to Figure.

      2. Examine the bolt holes at location 5.

        1. Scored

        1. Repair, VRS1106 TASK 71-21-11-300-008 (REPAIR-008)

        2. Burred

        1. Repair, VRS1106 TASK 71-21-11-300-008 (REPAIR-008)

    7. SUBTASK 71-21-11-220-071 Examine the Thrust Mount Bracket Assemblies (01-500 and 01-700) Pin Hole

    1. Refer to Figure.

      2. Examine the pin hole at location 6.

        1. Burred

        1. Repair, VRS1106 TASK 71-21-11-300-008 (REPAIR-008)

        2. Worn.

          1. If the hole diameter is between 0.3165 and 0.3179 in. (8.040 and 8.076 mm)

          1. Accept

          2. More than 0.3179 in. (8.076 mm)

          1. Reject

    8. SUBTASK 71-21-11-220-072 Examine the Thrust Mount Bracket Assemblies (01-500 and 01-700) Lugs

    1. Refer to Figure.

      2. Examine the lugs at location 7.

        1. Bent or cracked

        1. Reject

    9. SUBTASK 71-21-11-220-073 Examine the Thrust Mount Bracket Assemblies (01-500 and 01-700) Bolt Holes

    1. Refer to Figure.

      2. Examine the bolt holes at location 8.

        1. Burred

        1. Repair, VRS1106 TASK 71-21-11-300-008 (REPAIR-008)

        2. Scored

        1. Repair, VRS1106 TASK 71-21-11-300-008 (REPAIR-008)

    10. Figure: Locations on the thrust mount bracket assembly

    Locations on the thrust mount bracket assembly

Requirements After Job Completion

Follow-On Conditions

NONE