TASK 79-21-49-200-104 Engine Pressure Oil Tubes - Examine, Inspection-004

DMC:V2500-A0-79-21-4900-10A-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 79-21-49-200-104 Engine Pressure Oil Tubes - Examine, Inspection-004

Effectivity

FIG/ITEM

PART NO.

17-100

740-5767-507

17-100

745-5767-501

17-100

740-5755-511

17-100

740-5767-509

General

This TASK gives the procedure for the inspection of the pressure oil tubes. For the other pressure oil tube parts, refer to Inspection-000 TASK 79-21-49-200-100.

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 the 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 a 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 parts must be examined to make sure that all the repairs are completed satisfactorily.

Practices and processes referred to in the procedure by the TASK number 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:

Procedures for crack tests

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 79-21-49-230-054 Examine the Pressure Oil Tube (17-100) for Cracks

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

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

      1. Pressure oil tube (17-100), SPM TASK 70-23-01-230-501.

        2. Cracked

          1. Not more than 0.010 in. (0.25 mm) in width.

          1. Repair, VRS2909 (Repair-002) TASK 79-21-49-300-002.

          2. More than in Step and not more than 2.00 in. (50.8 mm) in length.

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

        3. Defective Weld

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

    2. SUBTASK 79-21-49-220-072 Examine the Pressure Oil Tube at Locations R

    1. Refer to Figure.

      2. 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, VRS2905 (Repair-001) TASK 79-21-49-300-001 or Repair VRS7001, (Repair-001)TASK 70-35-24-300-501.

      3. Nicked

        1. Not more than 0.003 in. (0.07 mm) in depth

        1. Repair, VRS2905 (Repair-001) TASK 79-21-49-300-001.

        2. More than Step

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

      4. Scratched

        1. Not more than 0.003 in. (0.07 mm) in depth

        1. Repair, VRS2905 (Repair-001) TASK 79-21-49-300-001.

        2. More than in Step

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

      5. Dented

        1. One or more dents, with more than 1.00 in. (25.4 mm) between the edges of each of the dents

          1. Not more than 0.050 in. (1.27 mm) in depth with the radius of the dent not less than 0.056 in. (1.42 mm).

          1. Accept

          2. Other than inStep

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

        2. More than one dent, with less than 1.00 in. (25.4 mm) between the edges of each of the dents

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

      6. Rubbed

        1. Not more than 0.003 in. (0.07 mm) in depth

        1. Repair, VRS2905 (Repair-001) TASK 79-21-49-300-001.

        2. More than in Step.

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

    3. SUBTASK 79-21-49-220-073 Examine the Pressure Oil Tube at Location S

    1. Refer to Figure.

      2. 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, VRS2905 (Repair-001) TASK 79-21-49-300-001 or Repair, VRS7001 (Repair-001) SPM TASK 70-35-24-300-501.

      3. Nicked

        1. Not more than 0.003 in. (0.07 mm) in depth

        1. Repair, VRS2905 (Repair-001) TASK 79-21-49-300-001.

        2. More than in Step

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

      4. Scratched

        1. Not more than 0.003 in. (0.07 mm) in depth

        1. Repair, VRS2905 (Repair-001) TASK 79-21-49-300-001.

        2. More than in Step

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

      5. Distorted

      1. Repair, VRS2905 (Repair-001) TASK 79-21-49-300-001.

      6. Dented

        1. One or more dents, with more than 1.00 in. (25.4 mm) between the edges of each of the dents

          1. Not more than 0.050 in. (1.27 mm) in depth with the radius of the dent not less than 0.056 in. (1.42 mm)

          1. Accept

          2. Other than in Step

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

        2. More than one dent, with less than 1.00 in. (25.4 mm) between the edges of each of the dents

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

      7. Rubbed

        1. Not more than 0.003 in. (0.07 mm) in depth.

        1. Repair, VRS2905 (Repair-001) SPM TASK 79-21-49-300-001.

        2. More than Step.

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

    4. SUBTASK 79-21-49-220-074 Examine the Pressure Oil Tube Support Clips

      1. Distorted

      1. Repair, VRS2995 (Repair-013) TASK 79-21-49-300-013 or Repair, VRS7001 (Repair-001) SPM TASK 70-35-24-300-501.

    5. SUBTASK 79-21-49-220-075 Examine the Pressure Oil Tube End Connectors, Locations N and P

    1. Refer to Figure.

      2. Nicked

        1. Not more than 0.010 in. (0.25 mm) in depth

        1. Accept

          2. More than in Step

          1. Repair, VRS2905 (Repair-001) TASK 79-21-49-300-001 or Repair, VRS7001 (Repair-001) SPM TASK 70-35-24-300-501.

        2. Burred

        1. Repair, VRS2905 (Repair-001) TASK 79-21-49-300-001.

        3. Damaged

          1. Lock-wire holes

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

          2. Threads

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

    6. SUBTASK 79-21-49-220-076 Examine the Pressure Oil Tube Sealing Faces V and W

    1. Refer to Figure.

      2. Scratched

        1. Circumferential scratches not more than 0.010 in. (0.25 mm) in depth

        1. Repair, VRS2905 (Repair-001) TASK 79-21-49-300-001.

          2. More than in Step

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

    7. Figure: Pressure Oil Tube (17-100) Inspection Locations

    Pressure Oil Tube (17-100) Inspection Locations

Requirements After Job Completion

Follow-On Conditions

NONE