SOLDERING

TM9-2320-270-20-1

SOLDERING

CAUTION

Use low-wattage soldering gun when soldering electrical wires, connectors, terminal

lugs, and receptacles. High-wattage soldering gun may damage parts by overheating

them.

Solder connections must be bright and clean before soldering (see page 4-3 of this section for

instructions on how to clean electrical parts). Solder must be non-acid type (item 15, appendix C).

Use rosin flux (item 7, appendix C). All wires, parts, and soldering gun must be pre-tinned for good

connection and maximum transfer of heat.

To prevent overheating damage to electrical parts when soldering and unsoldering connections, hold

bare wire, lead, or terminal lug close to soldering point with long round nose pliers. Pliers act as a

heat sink, absorbing excess heat.

Clean all solder joints with an acid swabbing brush and cleaning compound after soldering to get a

bright clean surface.

HEAT SHRINKABLE TUBING

Heat shrinkable tubing (item 8, appendix C) is used to insulate soldered and crimped electrical

connections as follows:

1. Cut desired length of new tubing twice the diameter of the connection to be covered.

2. Slide tubing onto wire and out of the way before making connection.

3. After making electrical connections, slide tubing into place over it.

WARNING

Do not touch heat shrinkable tubing for at least 30 seconds after heating. Hot tubing can

burn you.

4. Hold heat gun 4 to 5 inches away from tubing and apply heat for about 30 seconds. Stop

applying heat as soon as tubing forms to shape of connection.

WIRE TERMINAL LUG AND CONNECTOR REPLACEMENT

Replace wire terminal lugs and connectors as follows:

Cut off damaged terminal lug or connector with diagonal-cutting pliers.

Slide new length of heat shrinkable tubing (item 8, appendix C) onto wire if desired.

Using wire stripper, strip enough insulation from wire to allow bare wire to go all the way

into hole in terminal lug or connector.

Select proper terminal lug or connector for wire size and terminal stud or other mating

connector.

4-5