TASK 71-73-49-200-401 Oil, Hydraulic, And Water Drain Tubes - Related Parts - Examine The No .4 Bearing Oil Weep Tube Remaining Parts, Inspection-001

DMC:V2500-A0-71-73-4900-00A-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 71-73-49-200-401 Oil, Hydraulic, And Water Drain Tubes - Related Parts - Examine The No .4 Bearing Oil Weep Tube Remaining Parts, Inspection-001

Effectivity

FIG/ITEM

PART NO.

VARIOUS

BOLTS

VARIOUS

WASHERS

VARIOUS

NUTS

VARIOUS

CLIPNUTS

VARIOUS

SPACERS

VARIOUS

CLIPS

General

This TASK gives the procedure for the inspection of the No.4 bearing oil weep tube remaining parts. For the other No.4 bearing oil weep tube parts, refer to Inspection-000 TASK 71-73-49-200-400 and Component Maintenance Manual - Tubes, Hoses and Ducts (CMM-THDV2500- 1IA) TASK 71-73-49-200-100.

Fig./item numbers in parentheses in the procedure agree with those given 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 they are examined. Refer to the Cleaning-000 TASK 71-73-49-100-400 .

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.

The procedure for those parts which must have a crack test is given in the 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 numbers 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 SPM TASK. For more information 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 71-73-49-220-063 Examine the Bolts

      1. Threads

        1. Crossed

        1. Reject

        2. Stripped

        1. Reject

        3. Missing

        1. Reject

        4. Worn

        1. Refer to 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. Burred with decrease in function.

          1. Reject

    2. SUBTASK 71-73-49-220-064 Examine the Self-Locking Nuts/Clipnuts

      1. Threads

        1. Crossed

        1. Reject

        2. Stripped

        1. Reject

        3. Missing

        1. Reject

        4. Worn

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

      2. Surfaces

        1. Burred/nicked.

          1. Burred/nicked but with no decrease in function.

          1. Accept

          2. Burred/nicked with decrease in function.

          1. Reject

      3. Clip

        1. Distorted

        1. Reject

        2. Unsatisfactory grip.

        1. Reject

    3. SUBTASK 71-73-49-220-065 Examine the Washers

      1. Surfaces

        1. Burred

        1. Reject

    4. SUBTASK 71-73-49-220-066 Examine the Spacers

      1. 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. Scratched

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

          1. Accept

          2. More than in Step.

          1. Reject

        3. Burred

        1. Reject

    5. SUBTASK 71-73-49-220-067 Examine the Tube Clips

      1. Cushion

        1. Torn/missing

        1. Reject

      2. Bolt holes.

        1. Distorted/worn but with no decrease in function.

        1. Accept

        2. Torn/cracked

        1. Reject

      3. Clip

        1. Distorted

        1. Reject

Requirements After Job Completion

Follow-On Conditions

NONE