TASK 78-32-47-700-301 Left C-Duct Electrical Harness - Test The Harness, Testing-001

DMC:V2500-A0-78-32-4700-00A-340A-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 78-32-47-700-301 Left C-Duct Electrical Harness - Test The Harness, Testing-001

Effectivity

FIG/ITEM

PART NO.

01-050

740-0254-513

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.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
MeggerLOCALMegger

250 volts DC or equivalent

Lamp and battery teterLOCALLamp and battery tester

4.5 volts DC

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 78-32-47-750-001 Do the Test to Find the Insulation Resistance Value of the Left C-Duct Electrical Harness

    1. Refer to Table.

      2. Connect the Megger - 250 volts DC between each connector body and all the contacts within the connector. This check must be carried out for all connectors.

      1. Accept resistances more than 20 megohms.

      2. Reject resistances less than in Step.

      3. Lightly pull or bend the cable. Make sure the resistances do not become less than 20 megohms.

      3. Connect the Megger - 250 volts DC between each contact and all the other contacts within the connectors.

      1. Accept resistances more than 20 megohms.

      2. Reject resistances less than in Step.

      3. Lightly pull or bend the cable. Make sure the resistances do not become less than 20 megohms.

    2. SUBTASK 78-32-47-750-051 Do a Continuity Test on the Left C-Duct Electrical Harness

      NOTE

      Various methods can be used for continuity testing but in all cases the maximum voltage allowed is 24 volts DC.

    1. Refer to Table.

    2. Connect the Lamp and battery teter - 4.5 volts DC to each end of the cable circuit.

      3. Reject the harness if the light does not come on which shows no continuity.

      1. Accept cable circuits where the test lamp comes on.

      2. Reject all circuits where the test lamp does not come on.

    3. Table 2. Connector and Contact Numbers

    Connector

    Contact to

    Connector

    Contact

    901J

    1

    905P

    A

    901J

    2

    905P

    C

    901J

    3

    905P

    B

    901J

    4

    903P

    1

    901J

    5

    903P

    2

    901J

    6

    903P

    3

    901J

    7

    903P

    4

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Tool Number:Lamp and battery tester
Tool Name:Lamp and battery teter
Manufacturer Code:LOCAL
Tool Number:Megger
Tool Name:Megger