TASK 79-21-49-200-101-A00 Engine Pressure Oil Tubes - Examine, Inspection-001

DMC:V2500-A0-79-21-4900-08A-310A-C|Issue No:001.00|Issue Date:2013-11-01

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 79-21-49-200-101-A00 Engine Pressure Oil Tubes - Examine, Inspection-001

Effectivity

FIG/ITEM

PART NO.

01-100

5A8786

01-100

5A8796

01-100

5A9187

01-100

6A6181

01-500

5A8773

02-100

5A9153

02-100

6A6182

02-500

5A8795

02-500

5A9081

02-500

6A6183

03-100

5A8770

03-100

5A8797

General

This TASK gives the procedure for the inspection of the oil tube assembly. For the other engine pressure oil tubes parts, refer to Inspection-000 TASK 79-21-49-200-100 and Inspection-000 V2500-A0-79-21-4900-00A-307A-C in the Component Maintenance Manual (CMM-MECH-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.

All the parts must be cleaned before the part is examined. Refer to Cleaning-000 TASK 79-21-49-100-100.

All parts must be visually examined for damage, corrosion and wear. Defects that are not identified in the procedure must be referred to IAE.

Do not discard the 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.

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

NameManufacturerPart Number / IdentificationQuantityRemark
Fluorescent Penetrant Inspection EquipmentLOCALFluorescent Penetrant Inspection Equipment

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 79-21-49-230-066 Examine the Oil Tube Assembly for Cracks

    1. Clean the parts. Refer to Cleaning - 000 TASK 79-21-49-100-100.

      2. Do the crack test on the parts that are given below. Use the applicable penetrant inspection procedure.

        1. Oil tube assembly, Refer to SPM TASK 70-23-02-230-501.

          1. Cracked

          1. Repair VRS7001, (Repair-001)TASK 70-35-24-300-501.

    2. SUBTASK 79-21-49-220-123 Examine the Oil Tube Assembly Tube Surface

    1. Refer to Figure.

      2. Examine the tube surface at location 1.

        1. Pitted

          1. Unlimited number of pits not more than 0.0010 in. (0.025 mm) in depth, 0.062 in. (1.57 mm) in length and 0.010 in. (0.25 mm) in width.

          1. Accept

          2. Maximum of three pits for each 2.00 in. (50.8 mm) length of tubing; not more than 0.0030 in. (0.075 mm) in depth, 0.062 in. (1.57 mm) in length, 0.010 in. (0.25 mm) in width and no other dents in less than 0.1250 in (3,175 mm).

          1. Accept

          3. Other than in Step or Step.

          1. Repair VRS1687, (Repair-003)TASK 79-21-49-300-003 or Repair VRS7001, (Repair-001)TASK 70-35-24-300-501.

        2. Dented

          1. Not more than 0.500 in. (12.70 mm) of fitting or bend.

          1. Repair VRS7001, (Repair-001)TASK 70-35-24-300-501.

          2. In areas other than Step, of large smooth area if the maximum diameter is ten times the depth and bore is not decreased by more than ten percent at any one point.

          1. Accept

          3. In areas other than Step, of small smooth area, that is not more than 0.125 sq in. (80.00 sq mm) if depth is more than 0.025 in. (0.64 mm).

          1. Accept

        3. Nicked

          1. On the other surface of a bend.

          1. Repair VRS1687, (Repair-003)TASK 79-21-49-300-003 or Repair VRS7001, (Repair-001)TASK 70-35-24-300-501.

          2. In areas other than Step.

          1. Repair VRS1687, (Repair-003)TASK 79-21-49-300-003 or Repair VRS7001, (Repair-001)TASK 70-35-24-300-501.

        4. Galled

          1. On the outer surface of a bend.

          1. Repair VRS1687, (Repair-003)TASK 79-21-49-300-003 or Repair VRS7001, (Repair-001)TASK 70-35-24-300-501.

          2. In areas other than Step.

          1. Repair VRS1687, (Repair-003)TASK 79-21-49-300-003 or Repair VRS7001, (Repair-001)TASK 70-35-24-300-501.

    3. SUBTASK 79-21-49-220-124 Examine the Oil Tube Assembly Tube Bore

    1. Refer to Figure.

      2. Examine the tube bore at location 2.

        1. Plugged

        1. Clean with dry air blast.

    4. SUBTASK 79-21-49-220-125 Examine the Oil Tube Assembly Ferrule

    1. Refer to Figure.

      2. Examine the ferrule at location 3.

        1. Sealing face

          1. Galled

          1. Repair VRS1687, (Repair-003)TASK 79-21-49-300-003 or Repair VRS7001, (Repair-001)TASK 70-35-24-300-501.

    5. SUBTASK 79-21-49-220-126 Examine the Oil Tube Assembly Swivel Nut

    1. Refer to Figure.

      2. Examine the swivel nut at location 4.

        1. Threads

          1. Pick-up

          1. Repair VRS1687, (Repair-003)TASK 79-21-49-300-003.

          2. Crossed

          1. Repair VRS7001, (Repair-001)TASK 70-35-24-300-501.

          3. Stripped

          1. Repair VRS7001, (Repair-001)TASK 70-35-24-300-501.

        2. Sealing face

          1. Galled

          1. Repair VRS1687, (Repair-003)TASK 79-21-49-300-003 or Repair VRS7001, (Repair-001)TASK 70-35-24-300-501.

        3. Lockwire hole

          1. Damaged

          1. Repair VRS7001, (Repair-001)TASK 70-35-24-300-501.

    6. SUBTASK 79-21-49-220-127 Examine the Oil Tube Assembly Union Adaptor

    1. Refer to Figure.

      2. Examine the union adaptor at location 5.

        1. Threads

          1. Pick-up

          1. Repair VRS1687, (Repair-003)TASK 79-21-49-300-003.

          2. Crossed

          1. Repair VRS7001, (Repair-001)TASK 70-35-24-300-501.

          3. Stripped

          1. Repair VRS7001, (Repair-001)TASK 70-35-24-300-501.

        2. Sealing face

          1. Galled

          1. Repair VRS1687, (Repair-003)TASK 79-21-49-300-003 or Repair VRS7001, (Repair-001)TASK 70-35-24-300-501.

        3. Lockwire hole

          1. Damaged

          1. Repair VRS7001, (Repair-001)TASK 70-35-24-300-501.

    7. SUBTASK 79-21-49-220-128 Examine the Oil Tube Assembly Lug

    1. Refer to Figure.

      2. Examine the lug at location 6

        1. Cracked

        1. Repair VRS7001, (Repair-001)TASK 70-35-24-300-501.

        2. Distorted, small distortion can be removed if crack are not caused.

        1. Repair VRS1687, (Repair-003)TASK 79-21-49-300-003.

    8. SUBTASK 79-21-49-220-129 Examine the Oil Tube Assembly Elbow Adaptor

    1. Refer to Figure.

      2. Examine the elbow adaptor at location 7.

        1. Sealing face

          1. Galled

          1. Repair VRS1687, (Repair-003)TASK 79-21-49-300-003 or Repair VRS7001, (Repair-001)TASK 70-35-24-300-501.

        2. Flange

          1. Cracked

          1. Repair VRS7001, (Repair-001)TASK 70-35-24-300-501.

          2. Galled

          1. Repair VRS1687, (Repair-003)TASK 79-21-49-300-003 or Repair VRS7001, (Repair-001)TASK 70-35-24-300-501.

    9. Figure: Locations on the Oil Tube Assembly

    Locations on the Oil Tube Assembly

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
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