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 70-43-03-450-501 Application Of Electrical Contact Enhancer For Wiring Harnesses
General
Electrical contact enhancer on connector contacts in connector interfaces can reduce intermittent false signals and nuisance messages.
This electrical contact enhancer is not an alternative to contact replacement. Worn or damaged connectors must be replaced as soon as the harness is at a location where it is possible to replace the connectors.
For better reliability of connector contacts, it is permitted to apply electrical contact enhancer routinely as part of the usual harness assembly procedure.
Do not apply CoMat 01-578 ELECTRICAL CONTACT ENHANCER or CoMat 01-579 ELECTRICAL CONTACT ENHANCER to igniter high tension lead contacts, EGT harness connections, or EGT junction box connections. During engine operation, the temperatures of these connections can exceed the 425F (218C) decomposition temperature of CoMat 01-578 ELECTRICAL CONTACT ENHANCER or the 550F (288C) decomposition temperature of CoMat 01-579 ELECTRICAL CONTACT ENHANCER.
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
NONEConsumables, Materials and Expendables
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| CoMat 01-578 ELECTRICAL CONTACT ENHANCER | LOCAL | CoMat 01-578 | ||
| CoMat 01-410 ISOPROPYL ALCOHOL, REAGENT GRADE | 0AL61 | CoMat 01-410 | ||
| CoMat 01-579 ELECTRICAL CONTACT ENHANCER | LOCAL | CoMat 01-579 |
Spares
NONESafety Requirements
NONEProcedure
Clean and dry the connectors by SPM TASK 70-11-57-110-501.
If the ambient temperature is too cold for the electrical contact enhancer to flow sufficiently, add CoMat 01-410 ISOPROPYL ALCOHOL, REAGENT GRADE to the CoMat 01-578 ELECTRICAL CONTACT ENHANCER in a proportion of 4 to 1 maximum (that is, four parts or less isopropyl alcohol to one part electrical contact enhancer) to make the electrical contact enhancer more liquid.
Apply one drop of CoMat 01-578 ELECTRICAL CONTACT ENHANCER to the brush that the manufacturer supplies with the electrical contact enhancer and then use the brush to apply a thin coating of the electrical contact enhancer to the electrical contact pins on the male connector of the mating pair of electrical connectors.
If you have added CoMat 01-410 ISOPROPYL ALCOHOL, REAGENT GRADE to the electrical contact enhancer, let the applied electrical contact enhancer dry for one hour minimum before you connect the mating connectors.
For CoMat 01-578 ELECTRICAL CONTACT ENHANCER, do the subsequent procedure:
For CoMat 01-579 ELECTRICAL CONTACT ENHANCER bulk liquid, stir to mix the electrical contact enhancer and then use a brush to apply a thin coating of the electrical contact enhancer to the electrical contact pins on the male connector of the mating pair of electrical connectors.
For CoMat 01-579 ELECTRICAL CONTACT ENHANCER aerosol spray, shake the can to mix the contents and then hold the spray can at a distance of 10 - 12 inches (26 - 30 cm) from the connector while lightly spraying to apply a thin coating of electrical contact enhancer to the electrical contact pins on the male connector of the mating pair of electrical connectors.
CAUTION
IF YOU APPLY TOO MUCH COMAT 01-579 ELECTRICAL CONTACT ENHANCER, PIN-TO-PIN SHORT CIRCUITS CAN OCCUR.Use the applicable procedure to apply the electrical contact enhancer:
Let the applied electrical contact enhancer dry before you connect the mating connectors.
For CoMat 01-579 ELECTRICAL CONTACT ENHANCER, do the subsequent procedure:
Apply the electrical contact enhancer by the applicable procedure:
Connect the mating connectors. Follow the applicable standard procedures in the Engine Manual to make the connections.
SUBTASK 70-35-19-350-001 Procedure