TASK 70-21-03-100-501 Examine the Remaining Parts

DMC:V2500-00-70-21-03-00A-310A-D|Issue No:003.00|Issue Date:2021-02-01

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 70-21-03-100-501 Examine the Remaining Parts

Effectivity

FIG/ITEM

PART NO.

VARIOUS

BOLTS

VARIOUS

NUTS

VARIOUS

NUTS, LOCK

VARIOUS

CLIPNUTS

VARIOUS

SCREWS

VARIOUS

WASHER

VARIOUS

SPACER

VARIOUS

DOWELS

VARIOUS

E-TYPE SEALS

VARIOUS

BRACKET

VARIOUS

CLIPS/CLAMPS

General

This TASK gives the procedure for the inspection of the miscellaneous remaining parts identified in the Inspection/Check TASKS in the EM, the CMM-MM, the CMM-THD or the CMM-EHC.

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.

All the 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 oversize parts are installed.

Parts which should be discarded can be held although no repair is available. The repair of a discarded part can be shown to be necessary at a subsequent date.

All the 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.

References

Refer to the SPM for data on these items.

Definition of Damage, SPM TASK 70-02-02-350-501

Inspection of Parts, SPM TASK 70-20-01-200-501

Cleaning Policy and Methods, SPM TASK 70-10-00-100-501

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 70-21-03-220-001 Examine the Bolts/Screws

      1. Threads.

        1. Crossed

        1. Reject

        2. Stripped

        1. Reject

        3. Threads that are not there

        1. Reject

        4. Worn

        1. Refer to the SPM TASK 70-42-01-400-501.

      2. Surfaces.

        1. Nicked.

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

          1. Accept

          2. More than in Step

          1. Reject

      3. Head.

        1. Burred

          1. Burred but with no decrease in function

          1. Accept

          2. In excess of Step

          1. Reject

    2. SUBTASK 70-21-03-220-002 Examine the Nuts

      1. Threads

        1. Crossed

        1. Reject

        2. Stripped

        1. Reject

        3. Threads that are not there

        1. Reject

        4. Worn excessively

        1. Reject

      2. Damage to the head of the nut

      1. Reject

    3. SUBTASK 70-21-03-220-003 Examine the Assembled Washer Nuts

      1. Threads

        1. Crossed

        1. Reject

        2. Stripped

        1. Reject

        3. Threads that are not there

        1. Reject

        4. Worn excessively

        1. Refer to the SPM TASK 70-42-01-400-501

      2. Surfaces.

        1. Burred/nicked

          1. Burred/nicked but with no decrease in function

          1. Accept

          2. More than in Step

          1. Reject

      3. Assembled washer

        1. Cracked

        1. Reject

        2. Cup not locked to nut or distorted

        1. Reject

        3. Cup does not turn

        1. Reject

    4. SUBTASK 70-21-03-220-004 Examine the Self-Locking Nuts/Clipnuts

      1. Threads

        1. Crossed

        1. Reject

        2. Stripped

        1. Reject

        3. Threads that are not there

        1. Reject

        4. Worn

        1. Refer to the SPM TASK 70-42-01-400-501.

      2. Surfaces.

        1. Burred/nicked

          1. Burred/nicked but with no decrease in function

          1. Accept

          2. More than in Step

          1. Reject

      3. Clip

        1. Distorted

        1. Reject

        2. Unsatisfactory grip

        1. Reject

    5. SUBTASK 70-21-03-220-005 Examine the Washers

      1. Galled

      1. Reject

      2. Bolt Holes

        1. Burred

        1. Reject

        2. Elongated

        1. Reject

    6. SUBTASK 70-21-03-220-006 Examine the Spacers/Brackets

      1. Scored

      1. Reject

      2. Bent

      1. Reject

      3. Galled

      1. Reject

      4. Bolt Holes

        1. Burred

        1. Reject

        2. Elongated

        1. Reject

    7. SUBTASK 70-21-03-220-007 Examine the Dowels

      1. External surfaces

        1. Galled

        1. Reject

        2. Scored

        1. Reject

        3. Scratched

        1. Reject

      2. Bore

        1. Scored

        1. Reject

        2. Scratched

        1. Reject

    8. SUBTASK 70-21-03-220-008 Examine the E-Type Seals

      1. Surfaces

        1. Distorted

        1. Reject

        2. Nicked/scored

        1. Reject

      2. Silver plating

        1. Up to 30 percent of plating missing

        1. Accept

        2. More than in Step

        1. Reject

      3. Seal thickness

        1. More than 0.12 in. (3.05 mm)

        1. Accept

        2. Less than in Step

        1. Reject

    9. SUBTASK 70-21-03-220-009 Examine the C Seal

      1. Free height (thickness)

        1. More than 0.122 in. (3.09 mm)

        1. Accept

        2. Less than in Step

        1. Reject

      2. Surfaces

        1. Burred, nicked, distorted

        1. Reject

    10. SUBTASK 70-21-03-220-010Examine the Clips/Clamps

      1. Cushion

        1. Torn/missing

        1. Reject

      2. Bolt hole.

        1. Distorted/worn but no decrease in function

        1. Accept

        2. Torn/cracked

        1. Reject

      3. Clip/Clamp

        1. Bent/Distorted Surfaces

        1. Reject

    11. SUBTASK 70-21-03-220-011 Examine the Bonded Clips

      1. Cushion

        1. Torn/missing

        1. Reject

      2. Bolt hole

        1. Distorted/worn but no decrease in function

        1. Accept

        2. Torn/cracked

        1. Reject

      3. Clip

        1. Distorted

        1. Reject

      4. Copper earth finger

        1. Cracked

        1. Reject

        2. Loose

        1. Reject

    12. SUBTASK 70-21-03-220-012 Examine the Bonding Lead

      1. Lead

        1. Chafed/cut/frayed

        1. Reject

      2. Terminals

        1. Broken

        1. Reject

        2. Cracked

        1. Reject

        3. Loose

        1. Reject

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Editorial typo updates for clamps. (REA20VC395)