TOPIC 2. RADIATOR

TM 10-3930-644-14&P

TOPIC 2. RADIATOR

A. DESCRIPTION

The radiator (Figure 2-1) is of the fin and tube type and

is vertically supported by angle bracing to the truck

frame. The front of the radiator is protected from

structural damage by a heavy grille mounted in the

counterweight. An overflow tube is connected to the

filler neck and leads to the bottom of the radiator.

B. REMOVAL

When it becomes necessary to remove the radiator for

service, the following procedure is recommended:

1. Remove the side panels and raise the operator's

seat.

2. Remove the radiator cap, open the drain cocks

located underneath the alternator (Figure 2-2)

and in radiator outlet elbow to drain the cooling

system.

CAUTION

When removing the filler cap, rotate

the

cap

counterclockwise

very

Figure 2-1. Radiator Assembly

slowly; if hissing of vapor is

encountered, tighten cap immediately

5. Remove the capscrews which hold the radiator

and wait for system to cool

in position on the mounting bars located on the

sufficiently to allow removal of cap.

frame inside the counterweight.

CAUTION

NOTE: A quantity of spacers may

Never pour cold-water or cold anti-

have been used between the radiator

freeze into the radiator of an

and the mounting bars.

These

OVERHEATED ENGINE. Allow the

spacers must be replaced exactly as

engine to cool and avoid the danger

removed.

of cracking the cylinder head or

block. Keep engine running while

6 Slide the bottom of the radiator out of position.

adding water.

After the filler neck of the radiator has cleared

the inside top of the counterweight, the radiator

3. Loosen the retaining hose clamps and remove

can easily be removed.

the inlet and outlet hoses from the top and

bottom of the radiator.

NOTE

Refer to REPAIR MANUAL for proper

NOTE

RADIATOR INSPECTION, TESTING

An oil cooler is an integral part of the

and REPAIR.

bottom of the radiator to prevent

overheating of the transmission. The

C. INSTALLATION

oil cooler lines must be removed

prior to removing the radiator.

1. Slide radiator up into mounting position within

the counterweight, ensuring against any damage

4. Remove securing capscrews and the radiator

to filler neck or cooling fins.

grille from the back of the frame. Also remove

rear section of exhaust pipe and muffler (ACP

only).

M-155-1

2-41