TASK 73-22-51-200-101-C00 Right And Left Control Tubes - Examine, Inspection-001

DMC:V2500-A0-73-22-5100-00C-310A-C|Issue No:002.00|Issue Date:2015-05-01

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 73-22-51-200-101-C00 Right And Left Control Tubes - Examine, Inspection-001

Effectivity

FIG/ITEM

PART NO.

20-050

2A4036-01

20-180

2A4035-01

General

This TASK gives the procedure for the inspection of the right and left pressure control tubes. For other parts of the P4.9 sensor and manifold, refer to Inspection/Check-000 TASK 73-22-51-200-100.

Fig/item numbers in parentheses in the procedure agree with those used in the IPC.

The policy that is necessary for inspection is given in SPM TASK 70-20-01-200-501.

All the parts must be cleaned before any part is examined.

The procedure for those parts which must have a crack test is given, do the 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 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.

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 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

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 73-22-51-230-001 Examine the Right Pressure Control Tube (20-050) and the Left Pressure Control Tube (20-180) for Cracks

    1. Clean the parts. Refer to Cleaning-000 TASK 73-22-51-100-100.

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

        1. Right pressure control tube and left pressure control tube. Refer to SPM TASK 70-23-01-230-501.

          1. Cracked

          1. Reject

    2. SUBTASK 73-22-51-230-002 Examine the Right Pressure Control Tube (20-050) and the Left Pressure Control Tube (20-180) for Cracks

    1. Clean the parts. Refer to Cleaning-000 TASK 73-22-51-100-100.

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

        1. Right pressure control tube and left pressure control tube. Refer to SPM TASK 70-23-02-230-501.

          1. Cracked

          1. Reject

    3. SUBTASK 73-22-51-220-001 Examine the Right Pressure Control Tube (20-050) for Damage

    1. Refer to Figure.

      2. Examine the tube for pits, dents, nicks and scratches.

        1. 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 tube, not more than 0.003 in. (0.075 mm) in depth, 0.062 in. (1.57 mm) in length and 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, VRS3276 (Repair-003) TASK 73-22-51-300-003

        2. Dents

          1. Smooth dents up to 0.025 in. (0.635 mm) in depth on the tube segment only.

          1. Accept

          2. Other than Step.

          1. Reject

        3. Nicks, scratches and general damage.

          1. Up to 0.008 in. (0.203 mm) in depth.

          1. Repair, VRS3276 (Repair-003) TASK 73-22-51-300-003.

          2. Other than Step .

          1. Reject

    4. SUBTASK 73-22-51-220-002 Examine the Left Pressure Control Tube (20-180) for Damage

    1. Refer to Figure.

      2. Examine the tube for pits, dents, nicks and scratches.

        1. Pitted

          1. Unlimited number of pits not more than 0.001 in. (0.03 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 tube, not more than 0.003 in. (0.08 mm) in depth, 0.062 in. (1.57 mm) in length and 0.010 in. (0.25 mm) in width and no other dents within 0.125 in. (3.18 mm).

          1. Accept

          3. Other than in Step or Step.

          1. Repair, VRS3277 (Repair-004) TASK 73-22-51-300-004

        2. Dents

          1. Smooth dents up to 0.025 in. (0.64 mm) in depth on the tube segment only.

          1. Accept

          2. Other than Step.

          1. Reject

        3. Nicks, scratches and general damage.

          1. Not more than 0.008 in. (0.20 mm) in depth.

          1. Repair, VRS3277 (Repair-004) TASK 73-22-51-300-004.

          2. Other than Step .

          1. Reject

    5. SUBTASK 73-22-51-220-003 Examine the Right Pressure Control Tube (20-050) for Damage to the Conical Seat

    1. Refer to Figure.

      2. Examine the tube at location 1 for damage to the conical seat.

        1. If there is no high metal in the sealing area.

        1. Accept

        2. Other than Step.

        1. Repair, VRS3276 (Repair-003) TASK 73-22-51-300-003

    6. SUBTASK 73-22-51-220-004 Examine the Left Pressure Control Tube (20-180) for Damage to the Conical Seat

    1. Refer to Figure.

      2. Examine the tube at location 1 for damage to the conical seat.

        1. If there is no high metal in the sealing area.

        1. Accept

        2. Other than Step.

        1. Repair, VRS3277 (Repair-004) TASK 73-22-51-300-004

    7. SUBTASK 73-22-51-220-005 Examine the Right Pressure Control Tube (20-050) for Damage to the Threads

    1. Refer to Figure.

      2. Examine the tube at location 2 for damage to the threads.

        1. If there is no high metal and the tube thread turns into the mating part freely.

        1. Accept

        2. Other than Step.

        1. Repair, VRS3276 (Repair-003) TASK 73-22-51-300-003

    8. SUBTASK 73-22-51-220-006 Examine the Left Pressure Control Tube (20-180) for Damage to the Threads

    1. Refer to Figure.

      2. Examine the tube at location 2 for damage to the threads.

        1. If there is no high metal and the tube thread turns into the mating part freely.

        1. Accept

        2. Other than Step.

        1. Repair, VRS3277 (Repair-004) TASK 73-22-51-300-004

    9. SUBTASK 73-22-51-220-007 Examine the Right Pressure Control Tube (20-050) for Damage to the Seal Ring Sealing Surface

    1. Refer to Figure.

      2. Examine the tube at location 3 for damage to the seal ring sealing surface.

        1. If there is no high metal.

        1. Accept

        2. Other than Step.

        1. Repair, VRS3276 (Repair-003) TASK 73-22-51-300-003

    10. SUBTASK 73-22-51-220-008 Examine the Left Pressure Control Tube (20-180) for Damage to the Seal Ring Sealing Surface

    1. Refer to Figure.

      2. Examine the tube at location 3 for damage to the seal ring sealing surface.

        1. If there is no high metal.

        1. Accept

        2. Other than Step.

        1. Repair, VRS3277 (Repair-004) TASK 73-22-51-300-004

    11. SUBTASK 73-22-51-220-009 Examine the Right Pressure Control Tube (20-050) for Leaks

      1. Examine the tube for leaks by a pressure test with air.

        1. Leaks at 100 to 120 psig (689.5 to 827.4 kPa).

        1. Reject

    12. SUBTASK 73-22-51-220-010 Examine the Left Pressure Control Tube (20-180) for Leaks

      1. Examine the tube for leaks by a pressure test with air.

        1. Leaks at 100 to 120 psig (689.5 to 827.4 kPa).

        1. Reject

    13. Figure: Right Pressure Control Tube Inspection Locations

    Right Pressure Control Tube Inspection Locations

    Figure: Left Pressure Control Tube Inspection Locations

    Left Pressure Control Tube Inspection Locations

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised format. (editorial change)