TASK 71-52-43-200-301 EEC Core Harness And Voltage Divider Harness Assembly - Examine The Harness Assembly, Inspection-001

DMC:V2500-A0-71-52-4300-00A-310A-C|Issue No:001.00|Issue Date:2014-05-01

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 71-52-43-200-301 EEC Core Harness And Voltage Divider Harness Assembly - Examine The Harness Assembly, Inspection-001

Effectivity

FIG/ITEM

PART NO.

01-005

2A1497

01-005

6A4718

01-005

6A5554

01-005

6A5699

01-005

6A7570

01-005

6A8171

01-005

6A8172

06-005

6A8933

General

This TASK gives the procedure for the inspection of the EEC harness-core and the voltage divider harness assembly. For the other EEC harness-core parts, refer to Inspection-000 TASK 71-52-43-200-300 and the Component Maintenance Manual - Miscellaneous Mechanical Components (CMM-MECH-V2500-3IA) MECH Inspection-000 TASK 71-52-43-200-400.

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.

A ** following repair referenced in this inspection indicates that the repair is not yet published in the current revision of the manual and the part must be rejected. Contact IAE for additional information concerning FAA approved repair date.

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. Refer to Cleaning-000 TASK 71-52-43-100-300.

The procedure for those parts which must have a crack test is given in the relevant SUBTASK. Do the crack 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 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 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 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

Methods 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 71-52-43-220-052 Examine the EEC Harness-Core Cables at Location 1

    1. Refer to Figure.

      2. Cables/braided harness

        1. Chafed

        1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

        2. Frayed

        1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

      3. Cut

        SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

        4. Fused

        1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

        5. Burned

        1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

      3. Glass tape

      1. Not wound

        SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

      4. Lacing tape

      1. Missing

        SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

      2. Chafed

        SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

    2. SUBTASK 71-52-43-220-053 Examine the EEC Harness-Core Receptacles at Location 2

    1. Refer to Figure and Figure.

      2. Body

      1. Cracked

        SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

      2. Broken

        SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

      3. Threads

      1. Stripped

        SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

      2. Crossed

        SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

      3. Pick up

        SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

      4. Contacts

      1. Bent

        SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

        2. Worn

        1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

          NOTE

          Use a new pin or socket. Do the check for tension of each contact by feel.

      3. Loose

        SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

    3. SUBTASK 71-52-43-220-068 Examine the EEC Harness-Core Plugs at Location 2

    1. Refer to Figure and Figure.

      2. Body

        1. Cracked

        1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

        2. Broken

        1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

      3. Threads

      1. Stripped

        SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

        2. Crossed

        1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

        3. Pick up

        1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

      4. Contacts

        1. Bent

        1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

        2. Worn

        1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

          NOTE

          Use a new pin or socket. Do the check for tension of each contact by feel.

        3. Loose

        1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

    4. SUBTASK 71-52-43-220-069 Examine the EEC Harness-Core Backshells at Location 2

    1. Refer to Figure and Figure.

      2. Coupling nut

        1. Cracked

        1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

        2. Knurled shoulder

          1. Worn

          1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

        3. Lockwire hole

          1. Broken

            1. Not more than 50 percent

            1. Accept

            2. More than in Step.

            1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

      3. Backshell

        1. Scored

          1. Not more than 0.002 in. (0.05 mm)

          1. Accept

          2. More than in Step.

          1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

        2. Nicked

          1. Not more than 0.002 in. (0.05 mm)

          1. Accept

          2. More than in Step.

          1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

        3. Screws

          1. Missing

          1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

        4. Lockwire (which safeties the coupling nuts to the backshell)

          1. Missing/broken

          1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

        5. Sleeve

          1. Split/torn

          1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

    5. SUBTASK 71-52-43-220-054 Examine the EEC Harness-Core Terminals at Location 3

    1. Refer to Figure and Figure.

      2. Terminals

        1. Cracked

        1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

        2. Broken

        1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

        3. Looseness

          1. Crimp joints

          1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

    6. SUBTASK 71-52-43-220-055 Examine the EEC Harness-Core Sleeves and the Sleeve Markers at Location 4

    1. Refer to Figure.

      2. Sleeves and sleeve markers

        1. Chafed

        1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

        2. Torn

        1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

    7. SUBTASK 71-52-43-220-074 Examine the Voltage Divider Harness Cables at Location 1 (SBE 71-0303)

      SBE 71-0303: Power Plant - Engine electronic controller (EEC) harness-core - Introduction of voltage divider harness assembly between the trim balance probe and engine harness

    1. Refer to Figure.

      2. Cables/braided harness

        1. Chafed

        1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

          2. Frayed

          1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

          3. Cut

          1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

          4. Fused

          1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

          5. Burned

          1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

    8. SUBTASK 71-52-43-220-075 Examine the Voltage Divider Harness Terminals at Location 2 (SBE 71-0303)

      SBE 71-0303: Power Plant - Engine electronic controller (EEC) harness-core - Introduction of voltage divider harness assembly between the trim balance probe and engine harness

    1. Refer to Figure.

      2. Terminals

        1. Cracked

        1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

          2. Broken

          1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

          3. Looseness

            1. Crimp joints

            1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

    9. SUBTASK 71-52-43-220-076 Examine the Voltage Divider Harness Sleeves and the Sleeve Markers at Location 3 (SBE 71-0303)

      SBE 71-0303: Power Plant - Engine electronic controller (EEC) harness-core - Introduction of voltage divider harness assembly between the trim balance probe and engine harness

    1. Refer to Figure.

      2. Sleeves and sleeve markers

        1. Chafed

        1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

          2. Torn

          1. SPM, VRS7002 (Repair-001) TASK 70-35-25-300-001.

    10. Figure: EEC Harness-Core Inspection Locations

    EEC Harness-Core Inspection Locations

    EEC Harness-Core Inspection Locations

    Figure: SBE 71-0303: Voltage Divider Harness Assembly Inspection Locations

    SBE 71-0303: Voltage Divider Harness Assembly Inspection Locations

Requirements After Job Completion

Follow-On Conditions

NONE