WIRE REPLACEMENT

TM 5-2420-222-20-1

WIRE REPLACEMENT - CONTINUED

2. If a solder type terminal is in good condition, it can be unsoldered and reused.

3. Unsolder wires from soldered splice and terminal connections.

4. Cut new wire of same gage and type as wire being replaced to desired length using diagonal-cutting pliers.

5. Slide new lengths of heat shrinkable tubing (item 15, Appendix C) onto wire ends if desired. Always use heat

shrinkable tubing around wire splices, or wrap them with electrical tape (item 32, Appendix C).

6. Connect terminals or connectors to wire by soldering or crimping as necessary. Make sure that connections are

tight.

7. To splice two wires together, twist and tin end strands of each wire separately. After allowing tinned ends to cool,

twist both ends together and reheat to fuse ends together.

8. If heat shrinkable tubing Is used, shrink it around connections.

ELECTRICAL GROUND POINTS

Many electrical problems are the result of poor ground connections. You can make sure that ground connections are good

by doing the following:

WARNING

Although battery ground cable must be connected to test electrical circuit voltage, disconnect battery

ground cable before doing resistance tests or replacing parts. This will keep you from getting shocked and

prevent damage to parts and equipment.

1. Remove hardware connecting ground cable terminal to ground point.

WARNING

Electrical parts solvent cleaning compound (trichlorotrifluoroethane) is flammable, and reacts violently with

aluminum, titanium, barium, lithium, samarium, and sodium potassium. Cleaning compound fumes

displace air and it may be carcinogenic. Boiling point is 114F (460C). Do not wear jewelry. Wear rubber

gloves and use only in well ventilated area. Avoid contact with skin, eyes, and clothes and do not breathe

vapors. Do not use near open flame or excessive heat. If you become dizzy while using cleaning

compound, get fresh air immediately and get medical aid. If contact with eyes is made, wash your eyes

with water and get medical aid immediately.

2. Clean mounting hardware, ground cable terminal, and ground point with electrical parts solvent cleaning

compound (item 4, Appendix C) and acid swabbing brush.

3. Remove any rust with wire brush and crocus cloth (item 6, Appendix C).

4. Look for cracks, loose terminals, and stripped threads. Replace any defective parts.

5. Install hardware connecting ground cable terminal to ground point. Make sure that all hardware Is tight.

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