Section XV. COOLING SYSTEM - TM-10-3930-630-120089

TM 10-3930-630-12

(5)

Fill fuel tank with correct grade of fuel.

fuel tank and lines for leaks.

(6)

Open shutoff cock and start engine. Check

(7) Shut off engine. Install left front cowl.

Section XV. COOLING SYSTEM

4-66.

General

drive belt.

d. Installation. Refer to paragraph 4-51 and install

and adjust drive belt. Close side panels and lower seat.

The cooling system for the lift truck engine consists of a

water pump, a fan drive adapter, and cooling fan, drive

4-68.

Water Pump and Fan

belt, radiator, thermostat and connecting hoses. A gear

in the fan drive adapter is driven by the camshaft gear.

a. General. The water pump is mounted on the

This gear drives a pulley. The belts are driven by the

pulley and, in turn, drive the fan and alternator pulleys.

top front of the engine block. It is connected to the

A tank, mounted below, and an integral part of the

radiator with a rubber hose. Coolant is circulated by the

radiator, cools the transmission oil Capacity of the

water pump from the radiator through the engine. The

system is 9 quarts of coolant.

coolant then is discharged through the coolant outlet

elbow and returns to the radiator.

4-67.

Drive Belt

b. Inspection

(1) Open side panels and lift seat to an upright

a. General. The drive belt provides the motive

position.

force for the fan and alternator pulleys. It is driven by

(2) Inspect fan blades for bent or damaged

the fan drive pulley.

condition. Check fan for secure mounting

b. Inspection.

(3) Operate engine and check water pump and

(1) pen side panels and lift seat to upright

hoses for leaks. Shutoff engine.

c. Removal.

position.

(2) Inspect belts for fraying, wear, oil spots and

(1) Remove radiator cap (para. 3-12) and

evidence of stretching.

drain radiator by opening drain valve in radiator outlet

(3) Check belt tension (para 4-51) and adjust if

elbow. Drain engine block by opening drain valve (fig.

necessary.

4-51

(4) Replace unserviceable belts.

c. Removal Refer to paragraph 4-51 and remove

TA034826

Figure 4-51. Engine coolant drain valve.

(2)

Refer to paragraph 4-51 and remove drive

(3) Remove four screws and remove fan (fig.

belt.

4-52) from water pump pulley.

4-61