TASK 75-24-47-200-403 HPT/LPT Active Clearance Control (ACC) Ducts - Related Parts - Examine The ACC Valve Bracket, Inspection-003

DMC:V2500-A0-75-24-4700-02A-300A-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 75-24-47-200-403 HPT/LPT Active Clearance Control (ACC) Ducts - Related Parts - Examine The ACC Valve Bracket, Inspection-003

Effectivity

FIG/ITEM

PART NO.

01-500

5W8456

01-500

5W2098

01-500

6A6486

01-500

6A6587

General

This TASK gives the procedure for the inspection of the ACC valve bracket. For the other HP/LP ACC duct parts, refer to Inspection-000 TASK 75-24-47-200-400.

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 the SPM TASK 70-20-00-200-501.

All the parts must be cleaned before any part is examined. Refer to Cleaning-000 TASK 75-24-47-100-400.

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

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/SUBTASK 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:

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 75-24-47-220-076 Examine the ACC Valve Bracket for Cracks

    1. Clean the part. Refer to Cleaning-000 TASK 75-24-47-100-400.

      2. Do the crack test on the part that is given below. Use the applicable visual inspection procedure.

        1. Bracket. Refer to SPM TASK 70-21-01-220-501.

          1. Cracked

          1. Reject

    2. SUBTASK 75-24-47-220-058 Examine the ACC Valve Bracket Surface

      1. Examine all the surface

        1. Nicked

          1. Any nicks

          1. Repair, VRS1520 (Repair-010) TASK 75-24-47-300-010.

        2. Dented

          1. Any dents

          1. Repair, VRS1520 (Repair-010) TASK 75-24-47-300-010.

        3. Scratched

          1. Any scratches

          1. Repair, VRS1520 (Repair-010) TASK 75-24-47-300-010.

    3. SUBTASK 75-24-47-220-059 Examine the ACC Valve Bracket Bolt Holes

    1. Refer to Figure

      2. Examine the bolt holes at location 1

        1. Worn

          1. The worn hole is less than 1.2 times of nominal diameter and the distance between the worn hole and the edge of bracket is more than 0.066 in. (1.68 mm).

          1. Accept

          2. Other than in Step.

          1. Reject

    4. SUBTASK 75-24-47-220-060-001 Examine the ACC Valve Bracket Spherical Bearing (Pre SBE75-0060 (5W8456 and 5W2098))

    1. Refer to Figure

      2. Examine the spherical bearing at location 2

        1. Binding

          1. The ball can be moved through 10 degrees in cone angle with maximum torque of 3 lbfin (0.34 Nm).

          1. Accept

          2. Other than in Step.

          1. Reject

        2. Worn

          1. Up to 0.005 in. (0.127 mm) in radial play.

          1. Accept

          2. More than in Step.

          1. Reject

        3. Mark and discoloration

          1. Without depth

          1. Accept

          2. With depth

          1. Reject

        4. Corroded

          1. Any corrosion

          1. Reject

    5. SUBTASK 75-24-47-220-060-002 Examine the ACC valve Bracket Spherical Bearing (SBE75-0060 (6A6486 and 6A6587))
      SBE75-0060: Introduction of Revised ACC Mounting Bracket and Link Assemblies with Slotted Entry Bearings

    1. Refer to Figure.

      2. Examine the spherical bearing at location 2.

        1. Binding

          1. The ball can be moved through 10 degrees in cone angle with maximum torque of 3 lbfin (0.34 Nm).

          1. Accept

          2. Other than in Step.

          1. Reject

        2. Worn

          1. Up to 0.005 in. (0.127 mm) in radial play.

          1. Accept

          2. More than in Step.

          1. Replace the spherical bearing.

        3. Mark and discoloration

          1. Without depth

          1. Accept

          2. With depth

          1. Replace the spherical bearing.

        4. Corroded

          1. Any corrosion

          1. Replace the spherical bearing

    6. SUBTASK 75-24-47-220-061 Examine the ACC Valve Bracket for Deformation

    1. Refer to Figure.

      2. Deformed

      1. Reject

    7. Figure: Locations on the ACC Valve Bracket

    Locations on the ACC Valve Bracket

Requirements After Job Completion

Follow-On Conditions

NONE