Wiring

mounted on each side of the front of the radiator furnish

illumination for the engine. Two motor solenoid relays

and motors. one mounted on each hose reel assembly

and one motor solenoid and motor mounted on the

priming pump serve to furnish power for the priming

pump and hose reels. There are two battery charging

receptacles located at the rear of the unit above the

apron. The temperature and oil pressure sending units

are mounted on the engine.

Refer to TM 9-2320-235-10 for the chassis and engine

electrical components.

80. Wiring

a. General. When testing, repairing, or replacing

the wiring, refer to wiring diagram (fig. 3).

b. Testing.

Test a wire for continuity by

disconnecting each end from the component or

components to which it is connected. Touch the test

probes of a multimeter to each end of the wire. If

continuity is not indicated, the wire is defective and must

be repaired or replaced.

c. Repair. Shave the insulation on the wire at both

ends of the break and twist the bare wires together and

solder the connection. Cover the repaired breaks with

electrical tape and friction tape.

If a terminal breaks off a wire, replace it, using a like

terminal.

Figure 35. Siren and flasher light, removal and

d. Replacement. Replace a wire by disconnecting

installation.

it from the component or components and remove the

wire. Install a new wire and connect it. If a broken wire

c. Installation. Refer to figure 34, and install the

is part of a wiring harness, disconnect the wire and tape

front directional lights on the fire truck fenders.

the ends. Install a new wire and attach it to the outside

of the wiring harness.

82. Siren and Flasher Light

a. Removal. Refer to figure 35, and remove the

81. Front Directional Light Assembly

siren and flasher light from the fire truck fender.

a. Removal. Refer to figure 34, and remove the

b. Disassembly.

Refer to figure 36.

and

front directional light assembly from the fire truck

disassemble the siren and flasher light.

fenders.

c. Cleaning, Inspection., and Repair.

b. Cleaning, Inspection, and Repair.

(1) Clean all parts with a clean cloth

dampened in an approved cleaning

solvent, and dry thoroughly.

(2) Inspect all parts for damaged or defective

(2) Inspect lens, gasket for damaged or

condition.

defective condition.

(3) Replace or repair damaged or defective

(3) Inspect lamp for cracks, breaks, or burned

parts as necessary.

out condition.

d. Reassembly.

Refer to figure 36.

and

(4) Replace or repair damage(d or defective

reassemble the siren and flasher light in the reverse

parts as necessary.

order.

c. Installation. Refer to figure 3.5, an(i install the

siren and flasher light on the fire truck fender.

TAGO 6839A