TASK 71-51-43-300-003 General Services Harness - Replace The Connectors, Repair-003 (VRS2981)

DMC:V2500-A0-71-51-4300-02A-920A-C|Issue No:003.00|Issue Date:2019-08-01

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 71-51-43-300-003 General Services Harness - Replace The Connectors, Repair-003 (VRS2981)

Effectivity

FIG/ITEM

PART NO

01-005

740-5966-503

01-005

740-5966-505

01-005

740-5966-507

01-005

740-5966-511

01-005

740-5966-513

01-005

740-5966-515

01-005

740-5966-517

01-005

740-5966-519

01-005

740-5966-521

01-005

740-5966-523

01-005

740-5966-525

01-005

740-5966-527

01-005

740-5966-529

General

This repair can be done on the harnesses during overhaul, or while they are installed on the engine. Replace only the parts of the connectors which are unserviceable.

To identify the consumable materials, refer to the PCI.

Repair parts

Repair part identification - Refer to Figure.

Repair part location - Refer to Figure.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Extractor/inserter toolLOCAL

16g

Extractor/inserter toolLOCAL

20g

Strap WrenchLOCAL

BT-BS-611

Strap WrenchLOCAL

TG-70

Torque Wrench - 0 to 1000 lbf.in rangeLOCALTorque Wrench

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 02-127 LOCKWIRELOCALCoMat 02-127
CoMat 02-138 LOCKWIRELOCALCoMat 02-138
CoMat 02-141 LOCKWIRELOCALCoMat 02-141
CoMat 06-131 MARKING PENLOCALCoMat 06-131
CoMat 08-026 THREADLOCKING MATERIALLOCALCoMat 08-026

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 71-51-43-350-053 Disassemble the Connector Assembly

    1. WARNING

      PUT ON PROTECTIVE GOGGLES WHEN YOU CUT THE LOCKWIRE. PIECES OF THE LOCKWIRE CAN CAUSE DAMAGE TO YOUR EYES.

      Refer to Figure.

      2. Cut and remove the lockwire from the screws, the coupling nut and the shell.

      1. Be careful not to cause damage to the lockwire holes.

      3. If the backshell is not a straight type, make a mark on the shell which aligns with the master keyway.

    4. Remove the screws and the strain-relief clamp from the coupling nut.

      5. Remove the coupling nut from the shell.

      1. Use the applicable Strap Wrench (BT-BS- 611 or TG-70).

      2. Move the coupling nut and the grounding ferrule away from the shell.

      3. Be careful not to cause damage to the ground-shields of the cables.

      6. Remove the shell from the connector.

      1. Use the applicable Strap Wrench (BT-BS- 611 or TG-70).

      2. Move the shell away from the connector.

      3. Be careful not to cause damage to the ground-shields of the cables.

    2. SUBTASK 71-51-43-350-054 Remove the Contacts from the Connector.

    1. Refer to Figure.

      2. Attach a temporary identification tag to each of the cables in the connector.

      1. Write on the tag the number of the connector hole from which the cable came.

      3. Remove a contact from the connector.

      1. Use the applicable Extractor/inserter tool (16g or 20g).

      2. Put the cable in the groove of the tool.

      3. Push the tool along the cable and into the rear of the connector, until it touches the contact (the tool will open the collet).

      4. Hold the cable and the tool together and remove the contact, from the rear of the connector.

      4. Remove the remaining contacts from the connector.

      1. Do Step again for the remaining contacts.

    3. SUBTASK 71-51-43-350-055 Remove the Components of the Connector Assembly

      1. Remove the shell, the grounding ferrule and the coupling nut, from the harness.

      1. Be careful not to cause damage to the contacts or the ground-shields.

    4. SUBTASK 71-51-43-220-056 Examine the Components

      1. Examine the connector, the contacts, the coupling nut, the grounding ferrule, the screws and the shell.

      1. Refer to Inspection-001 TASK 71-51-43-200-301. Reject the parts which are unserviceable.

    5. SUBTASK 71-51-43-350-056 Install the Replacement Components of the Connector Assembly

    1. CAUTION

      THE REPLACEMENT COMPONENTS MUST HAVE THE SAME PART NUMBERS AS THE COMPONENTS WHICH WERE REMOVED. INCORRECT COMPONENTS CAN CAUSE DAMAGE TO THE SYSTEM.

      Refer to Figure.

      2. Install the new, or serviceable, components to the harness.

      1. Install the components in the sequence that follows: the coupling nut, the grounding ferrule and the shell.

      2. Be careful not to cause damage to the contacts or the ground-shields.

    6. SUBTASK 71-51-43-350-057 Install the Contacts to the Connector

    1. CAUTION

      THE CONTACTS MUST BE INSTALLED IN THEIR CORRECT POSITIONS IN THE CONNECTOR. IF THEY ARE INSTALLED IN THE INCORRECT POSITIONS, THE SYSTEM CAN BE DAMAGED.

      Refer to Figure.

      2. Find the contact which must be installed in the center hole of the connector.

      1. You must install the contacts at the center of the connector first and work out.

      3. Install the center contact to the connector.

      1. Use the applicable Extractor/inserter tool (16g or 20g).

      2. Put the cable in the groove of the tool.

      3. Push the tool along the cable, until it touches the flange of the contact.

      4. Hold the cable and the tool together and use the tool to push the contact in to the connector hole.

      5. When the contact is in the correct position, in the connector hole, release the cable and remove the tool.

      6. Lightly pull the cable to make sure that the contact is engaged correctly in the connector.

      4. Install the remaining contacts to the connector.

      1. Do Step again for the remaining contacts.

      2. Make sure the contacts are installed in the positions noted during their removal.

      3. Install the contacts nearest to the center first.

      5. Remove the identification tags from the cables.

      1. Remove the temporary tags, which were installed in Step.

    7. SUBTASK 71-51-43-350-058 Assemble the Connector Assembly

    1. Refer to Figure.

      2. Install the shell to the connector.

      1. Use the applicable Strap Wrench (BT-BS-611 or TG-70) to tighten the shell.

      2. If the backshell is not a straight type, align the mark (made in Step ) with the master keyway.

      3. Install the coupling nut to the shell.

      1. Put the ground-shields an equal distance apart around the shell.

      2. Push the ground ferrule along the harness, until it touches the ground-shields.

      3. Put the ground-shields through the coupling nut.

      4. Put two drops of the CoMat 08-026 THREADLOCKING MATERIAL opposite to each other, on the threads of the shell.

      5. Install the coupling nut to the shell.

      6. Use the Torque Wrench - 0 to 1000 lbf.in range and the applicable Strap Wrench (BT-BS-611 or TG-70), to torque the coupling nut to 10 lbfin. (1.13 Nm).

      4. Install the strain-relief clamp to the coupling nut.

      1. Make sure that all of the twists and bends are out of the cables.

      2. Attach the clamp to the coupling nut, with the two screws.

      3. Use the torque wrench to torque the screws to between 10 lbfin. and 20 lbfin. (1.13 Nm and 2.26 Nm).

    8. SUBTASK 71-51-43-750-051 Do a Continuity and Insulation Test on the Connector Assembly

      1. Do the test for continuity and insulation.

      1. Refer to Testing-001 TASK 71-51-43-700-301.

    9. SUBTASK 71-51-43-350-059 Safety the Connector Assembly

    1. Refer to Figure.

      2. Safety the connector assembly.

      2. Make sure that the shell, the coupling nut and the screws, are all safetied.

    10. SUBTASK 71-51-43-850-055 Put the Repair Scheme Number on the Harness

      1. Put the repair scheme number VRS2981 on the identification sleeve, of the harness, adjacent to the part number.

    11. Figure: Connector Assembly Details

    Connector Assembly Details

    Figure: Contact Removal and Installation Details

    Contact Removal and Installation Details

    Figure: Connector Assembly Lockwire Details

    Connector Assembly Lockwire Details

    Figure: Repair Part Identification

    Repair Part Identification

    Figure: Repair Part Location

    Repair Part Location

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised figure. (19VC206)

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:3HPT0
Supply Number:CoMat 02-127
Type:sp01
Supply Short Name:CoMat 02-127 LOCKWIRE
Supply Name:CoMat 02-127 LOCKWIRE
Specification Groups:
Doc NumberType
MS 9226-03 (0.025 IN)
Suppliers:
ManufacturerRemarks
3HPT0
K6835
LOCAL
Manufacturer Code:LOCAL
Supply Number:CoMat 02-138
Type:sp01
Supply Short Name:CoMat 02-138 LOCKWIRE
Supply Name:CoMat 02-138 LOCKWIRE
Specification Groups:
Doc NumberType
SAE ITC AS 44725-1, AMS5689 (0.5 mm)
orSAE ITC AS 44725-1, DTD 189A (0,5 mm)
Suppliers:
ManufacturerRemarks
LOCAL
81343
V508V
Manufacturer Code:LOCAL
Supply Number:CoMat 02-141
Type:sp01
Supply Short Name:CoMat 02-141 LOCKWIRE
Supply Name:CoMat 02-141 LOCKWIRE
Specification Groups:
Doc NumberType
AS3214-02 (0.8 mm)AMS 5689
Suppliers:
ManufacturerRemarks
LOCAL
81343
IE508
58401
Manufacturer Code:0AM53
Supply Number:CoMat 06-131
Type:sp01
Supply Short Name:CoMat 06-131 MARKING PEN
Supply Name:CoMat 06-131 MARKING PEN
Suppliers:
ManufacturerRemarks
0AM53
Manufacturer Code:LOCAL
Supply Number:CoMat 08-026
Type:sp01
Supply Short Name:CoMat 08-026 THREADLOCKING MATERIAL
Supply Name:CoMat 08-026 THREADLOCKING MATERIAL
Specification Groups:
Doc NumberType
OMAT: 8/66LOCTITE 222 AFS 1737A MIL-S-46163A TYPE 2 NATO 8030-99-224-8425
Suppliers:
ManufacturerRemarks
LOCAL
IE259
IE200
IE261
IE379
IE380
k3504
K6835
U0406
Manufacturer Code:LOCAL
Tool Number:Torque Wrench
Tool Name:Torque Wrench - 0 to 1000 lbf.in range
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