Tubing and Fittings - TM-5-4120-274-150059

TM 5-4120-274-15

to the component or components. If a broken wire

the break in a wire is in a harness or inaccessible

is part of a wiring harness, disconnect the wire at

area, replace wire (e below).

each end and tape these ends with electrical tape.

c. Testing. Teat a wire for continuity by dis-

Install a new wire and attach it to the outide of

connecting each end from the component or com-

the wiring harness.

ponents to which it is connected. Touch the test

probes of a multimeter to each end of the wire.

5-23. Tubing and Fittings

If continuity is not indicated, the wire is defec-

The refrigerant piping used on the air condition-

tive and must be repaired or replaced.

ing units consists of copper tubing and necessary

d. Repair. Remove the insulation on the wire

fittings. Joints of refrigeration pipes and fittings

to expose one-half inch of bare wire at both ends

are soldered. Inspect the piping and fittings for

of the break. Twist bare wire together and solder

the connection. Cover the repaired break with elec-

cracks and breaks. (para 3-45b). Replace defec-

trical tape and friction tape. Do not leave any bare

tive pipes with those of the same length, size,

wire exposed. If a terminal lug breaks off a wire,

shape, and material. When soldering or unsolder-

ing items such as the thermostatic expansion

replace it, using an exact duplicate terminal lug.

valves, or solenoid valves, disassemble valves and

e. Replacement. Replace a wire by disconnect-

wrap valve bodies with a damp cloth to protect

ing it from the component or components and re-

them from damage by heat.

move the wire. Install a new wire and connect it

5-5