TASK 79-21-49-200-103 Engine Pressure Oil Tubes - Examine, Inspection-003

DMC:V2500-A0-79-21-4900-09A-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 79-21-49-200-103 Engine Pressure Oil Tubes - Examine, Inspection-003

Effectivity

FIG/ITEM

PART NO.

10-100

5R8132

10-100

6A5394

11-100

5R8133

11-100

6A5395

12-100

5R8135

12-100

6A5397

13-100

5R8134

13-100

6A5396

13-100

6A6202

General

This TASK gives the procedure for the inspection of the pressure oil tubes.

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 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 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.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 79-21-49-230-053 Examine the Tubes (10-100, 11-100, 12-100 and 13-100) for Cracks

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

      2. Do a crack test on the parts given below. Use the applicable penetrant procedure.

        1. Tubes. Refer to SPM TASK 70-23-01-230-501.

          1. Cracked

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

    2. SUBTASK 79-21-49-220-066 Examine the Tube (10-100, 11-100, 12-100 and 13-100) Surface

    1. Refer to Figure.

      2. Examine the surface.

        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 0.003 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 within 0.125 in. (3.175 mm)

          1. Accept

          3. Other than in Step or Step.

          1. Repair, VRS1689 (Repair-014) TASK 79-21-49-300-014 or Repair, VRS7001 (Repair-001) SPM TASK 70-35-24-300-501.

        2. Dented

          1. Less than 0.25 in. (6.35 mm) from a weld joint.

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

          2. Smooth dents, if they are round bottomed and the depth is less than 0.025 in. (0.63 mm). Where the dent is on the outside of a bend the maximum depth must be less than 0.015 in. (0.38 mm).

          1. Accept

          3. Dents more than Step.

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

        3. Nicked

          1. Nicks that are round bottomed and less than 0.004 in. (0.10 mm) in depth if all burrs are removed.

          1. Accept

          2. More than Step.

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

        4. Fretted

          1. Not more than a maximum depth of 0.004 in. (0.10 mm) on the outside surface of a bend and 0.010 in. (0.25 mm) on the remaining section of the tube.

          1. Accept

          2. Nicks more than Step

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

        5. Scored

          1. Less than 0.004 in. (0.10 mm) in depth.

          1. Repair, VRS1689 (Repair-014) TASK 79-21-49-300-014.

          2. More than Step.

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

    3. SUBTASK 79-21-49-220-067 Examine the Tube (10-100, 11-100, 12-100 and 13-100) Bore

    1. Examine the bore.

      2. Plugged

      1. Clear with dry compressed air.

    4. SUBTASK 79-21-49-220-068 Examine the Tube (11-100 and 12-100) Lugs

      1. Examine the lug.

        1. Distorted

          1. Slight distortion can be removed, if the original shape is restored and cracks are not caused.

          1. Repair VRS1689 (Repair-014) TASK 79-21-49-300-014.

          2. Distortion more than Step.

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

        2. Lugs broken or cracked.

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

        3. Bolt hole edges burred.

        1. Repair, VRS1689 (Repair-014) TASK 79-21-49-300-014.

    5. SUBTASK 79-21-49-220-069 Examine the Tube (10-100) Cross Adapter and Flanged Adapter

    1. Examine the adapters.

      2. Threads

        1. Pick-up

        1. Repair, VRS1689 (Repair-014) TASK 79-21-49-300-014.

        2. Crossed and stripped

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

      3. Sealing face

        1. Galled

        1. Repair, VRS1689 (Repair-014) TASK 79-21-49-300-014 or Repair VRS7001, (Repair-001) SPM TASK 70-35-24-300-501.

      4. Bolt hole

        1. Burred

        1. Repair, VRS1689 (Repair-014) TASK 79-21-49-300-014.

    6. SUBTASK 79-21-49-220-070 Examine the Tube (10-100, 11-100, 12-100 and 13-100) Ferrule

    1. Examine the ferrule

      2. Sealing face

        1. Galled

        1. Repair, VRS1689 (Repair-014) TASK 79-21-49-300-014 or Repair, VRS7001 (Repair-001) SPM TASK 70-35-24-300-501

    7. SUBTASK 79-21-49-220-071 Examine the Tube (10-100, 11-100, 12-100 and 13-100) Nut

    1. Examine the nut.

      2. Threads

        1. Pick-up

        1. Repair, VRS1689 (Repair-014) TASK 79-21-49-300-014.

        2. Crossed and stripped

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

    8. Figure: Pressure Oil Tube (10-100) Inspection Locations

    Pressure Oil Tube (10-100) Inspection Locations

    Pressure Oil Tube (10-100) Inspection Locations

    Pressure Oil Tube (10-100) Inspection Locations

    Pressure Oil Tube (10-100) Inspection Locations

Requirements After Job Completion

Follow-On Conditions

NONE