TASK 79-22-49-200-109 Engine Scavenge Oil Tubes - Examine, Inspection-009

DMC:V2500-A0-79-22-4900-08A-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 79-22-49-200-109 Engine Scavenge Oil Tubes - Examine, Inspection-009

Effectivity

FIG./ITEM

PART NO.

12-500

740-5755-511

12-500

740-5767-507

12-500

745-5755-501

12-500

740-5755-513

General

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 parts must be cleaned before they are examined, refer to Cleaning-000 TASK 79-22-49-100-100. All parts must be visually examined for damage, corrosion and wear. Defects which are not identified in the procedure must be referred to IAE. The policy which is necessary for inspection is given in the SPM TASK 70-20-01-200-501.

The procedure for those parts which must have a crack test is given in Step Do the test before the part is visually examined.

Before the part is discarded make sure there are no repairs available. Refer to the instructions in the 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 could be shown to be necessary at a later date.

References

Refer to the SPM for data on these items.

Definitions of Damage SPM TASK 70-02-02-350-501.

Record and control of the lives of parts, SPM TASK 70-05-00-220-501.

Chemical processes, SPM TASK 70-11-00-110-501.

Inspection of parts, SPM 70-22-00-220-501

Methods of testing for crack indications, SPM TASK 70-23-00-230-501.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 79-22-49-230-057 Examine the Scavenge Oil Tube and all the Welds for Cracks

    1. Clean the tube. Refer to Cleaning-000 TASK 79-22-49-100-100.

      2. Fluorescent penetrant examine the tube for cracks. Use the applicable penetrant procedure, refer to the SPM TASK 70-23-01-200-501.

        1. Cracked

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

        2. Defective weld

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

    2. SUBTASK 79-22-49-220-088 Examine the Scavenge Oil Tube at Locations R

    1. Refer to Figure.

      2. Pitted

        1. Unlimited number of pits not more than 0.001 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 and Step.

        1. Repair, VRS2910 (Repair 010) TASK 79-22-49-300-010 or VRS7001 SPM (Repair 001) TASK 70-35-24-300-501.

      3. Nicked

        1. Up to 0.003 in. (0.07 mm) deep.

        1. Repair, VRS2910 (Repair 010) TASK 79-22-49-300-010.

          2. More than in Step.

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

      4. Scratched

        1. Up to 0.003 in. (0.07 mm) deep.

        1. Repair, VRS2910 (Repair 010) TASK 79-22-49-300-010.

        2. More than in Step.

        1. Repair, VRS7001 SPM (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. Up to 0.050 in. (1.27 mm) deep 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 SPM (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 SPM (Repair 001) TASK 70-35-24-300-501.

      6. Rubbed

        1. Up to 0.003 in. (0.07 mm) deep.

        1. Repair, VRS2910 (Repair 010) TASK 79-22-49-300-010.

        2. More than in Step.

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

    3. SUBTASK 79-22-49-220-089 Examine the Scavenge Oil Tube at Location S

    1. Refer to Figure.

      2. Pitted

        1. Unlimited number of pits not more than 0.001 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 and Step.

        1. Repair, VRS2910 (Repair 010) TASK 79-22-49-300-010 or VRS7001 SPM (Repair 001) TASK 70-35-24-300-501.

      3. Nicked

        1. Up to 0.003 in. (0.07 mm) deep.

        1. Repair, VRS2910 (Repair 010) TASK 79-22-49-300-010.

          2. More than in Step.

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

      4. Scratched

        1. Up to 0.003 in. (0.07 mm) deep.

        1. Repair, VRS2910 (Repair 010) TASK 79-22-49-300-010.

        2. More than in Step.

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

      5. Distorted

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

      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. Up to 0.050 in. (1.27 mm) deep 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 SPM (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 SPM (Repair 001) TASK 70-35-24-300-501.

      7. Rubbed

        1. Up to 0.003 in. (0.07 mm) deep.

        1. Repair, VRS2910 (Repair 010) TASK 79-22-49-300-010.

        2. More than in Step.

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

    4. SUBTASK 79-22-49-220-090 Examine the Scavenge Oil Tube Support Clips

    1. Refer to Figure.

      2. Distorted

      1. Repair, VRS2952 (Repair-009) TASK 79-22-49-300-009.

      3. Cracked

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

    5. SUBTASK 79-22-49-220-091 Examine the Scavenge Oil Tube End Connectors, Location N and P

    1. Refer to Figure.

      2. Nicked

        1. Up to 0.010 in. (0.25 mm) deep.

        1. Accept

        2. More than in Step.

        1. Repair, VRS2910 (Repair 010) TASK 79-22-49-300-010 or VRS7001 SPM (Repair 001) TASK 70-35-24-300-501.

      3. Burred

      1. Repair, VRS2910 (Repair 010) TASK 79-22-49-300-010.

      4. Damaged

        1. Damage to the lock-wire holes.

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

        2. Damage to threads.

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

    6. SUBTASK 79-22-49-220-092 Examine the Scavenge Oil Tube Sealing - Faces, V and W

    1. Refer to Figure.

      2. Scratched

        1. Circumferential scratches up to 0.003 in. (0.07 mm) deep.

        1. Repair, VRS2910 (Repair 010) TASK 79-22-49-300-010.

        2. More than in Step.

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

    7. Figure: Locations on the Scavenge Oil Tube (12-500)

    Locations on the Scavenge Oil Tube (12-500)

Requirements After Job Completion

Follow-On Conditions

NONE