TASK 75-22-41-200-101 No. 4 Bearing Compartment Cooler (ACAC) Air Ducts - Examine, Inspection-001

DMC:V2500-A0-75-22-4101-00A-310A-C|Issue No:002.00|Issue Date:2014-08-01

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 75-22-41-200-101 No. 4 Bearing Compartment Cooler (ACAC) Air Ducts - Examine, Inspection-001

Effectivity

FIG/ITEM

PART NO.

01-300

5T0114

01-300

5T8199

01-400

5T0115

01-400

5T8128

General

This TASK gives the procedure for the inspection of the ducts.

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 70-20-01-200-501.

All parts must be cleaned before any part is examined. Refer to Cleaning-000 TASK 75-22-41-100-100.

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

The procedure for those parts which must have a crack test is given in Step

Do the test before the parts are visually examined.

Limits for cracks are given in the SUBTASK for each part.

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 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 the data on these items.

Definitions of damages, SPM TASK 70-02-02-350-501.

Inspection of parts, SPM TASK 70-20-01-200-501.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Cleaning EquipmentLOCALCleaning Equipment
Fluorescent Penetrant Inspection EquipmentLOCALFluorescent Penetrant Inspection Equipment

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 75-22-41-230-051 Examine the Ducts (01-300 and 01-400) for Cracks

      1. Clean the parts.

      1. Refer to Cleaning-000 TASK 75-22-41-100-100.

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

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

          1. Cracked inlet duct.

          1. Reject

          2. Cracked outlet duct.

            1. Cracks up to 1.00 in. (25.4 mm) in length in one direction.

            1. Repair, VRS1649 (Repair-006) TASK 75-22-41-300-006.

            2. Cracks longer than in Step.

            1. Reject

    2. SUBTASK 75-22-41-220-052 Examine the Ducts (01-300 and 01-400) Mating Surface of Location 2 and 5

    1. Refer to Figure and Figure.

      2. Nicked

      1. Repair, VRS1643 (Repair-001) TASK 75-22-41-300-001.

      3. Scored

      1. Repair, VRS1643 (Repair-001) TASK 75-22-41-300-001.

    3. SUBTASK 75-22-41-220-053 Examine the Inlet Duct Bolt Hole at Location 1 and 3

    1. Refer to Figure.

      2. Bolt hole A.

        1. If the bore diameter is less than 0.4151 in. (10.54 mm).

        1. Accept

        2. More than in Step.

        1. Repair, VRS1651 TASK 75-22-41-300-007

        3. Burrs

        1. Repair, VRS1643 (Repair-001) TASK 75-22-41-300-001.

      3. Bolt hole B.

        1. If the bore diameter is less than 0.305 in. (7.74 mm).

        1. Accept

        2. More than in Step.

        1. Reject

        3. Burrs

        1. Repair, VRS1643 (Repair-001) TASK 75-22-41-300-001.

    4. SUBTASK 75-22-41-220-071 Examine the Outlet Duct Bolt Hole at Location 4 and 6

    1. Refer to Figure.

      2. Bolt hole C.

        1. If the bore diameter is less than 0.4411 in. (11.20 mm).

        1. Accept

        2. More than in Step.

        1. Reject

        3. Burrs

        1. Repair, VRS1643 (Repair-001) TASK 75-22-41-300-001.

      3. Bolt hole D.

        1. If the bore diameter is less than 0.305 in. (7.74 mm).

        1. Accept

        2. More than in Step.

        1. Reject

        3. Burrs

        1. Repair, VRS1643 (Repair-001) TASK 75-22-41-300-001.

    5. Figure: Inlet Duct

    Inlet Duct

    Figure: Outlet Duct

    Outlet Duct

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised the procedure. (JK0376)

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Tool Number:Cleaning Equipment
Tool Name:Cleaning Equipment
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