T M 9 - 4 9 3 1 - 3 8 1 - 1 4 & P - 2
3 - 4 .
General Maintenance Instructions. The following maintenance practices must be
followed anytime you are working on the accessory storage assembly.
NOTE
Electrical connector repair maintenance kit 12285360
contains instructions and tools needed for repair and
replacement of connectors, receptacles, contacts, and
wires.
a. Soldering Techiques. Solder connections must be bright clean before soldering.
Remove dirt and grease from connections with freon (Item 13, appendix C) and acid swabbing
brush (ltem 8, appendix C). Solder (ltem 29, appendix C) must be non-acid type. Rosin flux
(ltem 25, appendix C) should be used. All wires, parts, and solder iron must be pre-tinned for
good connection and maximum transfer of heat. Clean all solder joints with acid swabbing
brush and isopropyl alchohol (ltem 17, appendix C) after soldering to obtain a clean, bright
surface.
b. Crimping Wires. Cutoff and get rid of broken, bent, or discolored contacts with
pliers. Strip insulation from wires with a thermal wire stripper.
NOTE
Color bands on contacts indicate size of wire; for example,
contacts with green color bands for 22-26 gauge wire.
Contacts with red color bands are for 20-24 gauge wire.
Put contact into crimping tool with color band toward rear. Put bare wire into contact and
squeeze crimping tool. Takeout crimped contact from tool and check crimp by looking in
inspection hole. You must be able to see end of bare wire.
C . Tagging Electrical Wires. Look at component or part to see if wiring or component
has numbers or letters. Write numbers or letters on tag (Item 34, appendix C) with penciI (Item
19, appendix C). Fasten tag on wire. Remove tags after parts or wires are installed. If you
cannot tag a wire because it must fit through a smalI hole, you cannot reach it, or it has no
markings, write down the wire location and terminating point. After connecting wires without
tags, check continuity of wire to make sure it is connected to the correct point.
d. Replacing Wires.
WARNING
Use solvent in a well ventilated area away from open flame.
Solvent can burn easiIy and may give off harmful vapor.
Cut shrinkable sleeving from terminals of wire to be replaced. Unsolder wire or cut if crimped.
When soldering or unsoldering wires, hold the bare wire near the soldering point with long round
nose pliers. Pliers act as a heat sink preventing heat damage to electrical and electronic
components. Cut new wire to desired length and sIide new heat-shrinkable tubing over ends of
wire. Push sleeving back and strip insulation off wire with thermal wire stripper. Solder or
crimp wire to end terminal. Clean soldered joint with acid swabbing brush (Item 8, appendix C)
and solvent cleaning compound, (Item 30, appendix C). Slide sleeving over connection. Using
thermal gun, shrink sleeving.
3-2
Volume IV
Para. 3-4
