ELECTRICAL SYSTEM - TM-10-3930-638-24-P0031

1. RADIATOR. Mounted at rear of truck; cools engine

4. WATER PUMP. Driven by belt from crankshaft

coolant. Includes a coolant recovery system.

pulley.

2. THERMOSTAT AND HOUSING. Mounted on front

5. FAN. Mounted on water pump pulley; located behind

radiator.

of engine at rear of truck. Thermostat opens at 180

6. DRIVE BELT. Installed between engine crankshaft,

degrees F.

water pump pulley and alternator pulley; drives water

3. HOSES. Two hoses route coolant to and from radiator;

pump and alternator.

one hose connected between top of radiator to top of

water pump; other hose connected from bottom of radiator

to side of water pump.

1-19. ELECTRICAL SYSTEM

1. ALTERNATOR. 40 ampere; charges batteries and

and one blackout light. Operation of all lights is controlled

by VEHICLE LIGHTS switch mounted on instrument

supplies current for additional electrical power.

panel plus front and rear flood lights have individual

2. DRIVE BELT. Drives alternator through engine

switches.

crankshaft pulley.

6. SENDING UNITS. Includes oil pressure sending unit

3. STARTER MOTOR. Electric motor with an over

mounted on right of engine and fuel level sending unit

running clutch. Solenoid is mounted on starter with an

mounted in fuel tank.

enclosed shifting mechanism.

7. HORN AND SWITCH. Electric horn operates from

4. INSTRUMENT PANEL. Refer to paragraphs 1-19a

24 Volts and is mounted at front of truck; horn switch

and 1-19b for a description of gages, lights, and switches

located in steering wheel horn button applies 24 Volts

mounted on instrument panel.

to horn when depressed.

5. LIGHTS. Mounted at rear of truck are two flood

8. BATTERIES. Two 12 Volt batteries connected in

lights, two stop and tail lights, and two blackout stop and

series giving a 24 Volt electrical power supply.

tail lights. Mounted at front of truck are four flood lights

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