Table 5. Engine Troubleshooting Procedures - Continued.

TM 9-2320-312-24-1

TROUBLESHOOTING PROCEDURES - CONTINUED

0006 00

Table 5. Engine Troubleshooting Procedures - Continued.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

WARNING

DO NOT service cooling system unless engine has

cooled to at least 120F (50C) as indicated on coolant

temperature gauge. This is a pressurized cooling

system and escaping steam or hot coolant will cause

serious burns.

Wear effective eye, glove, and skin protection when

handling coolants. Failure to do so may cause injury.

3. Engine Runs Hot.

1. Refer to Malfunction Number

If problem persists, refer to step

1 above.

WARNING

DO NOT reach into fan area unless engine is shut

down. With engine running, an may turn on unexpect-

edly, causing serious injury.

NOTE

Perform the following test with engine OFF, system

air pressure at 110-120 psi (758-827 kPa), and cab

tilted (TM 9-2320-312-10).

If there is no clicking sound or

a. Connect a jumper wire

air being expelled from fan

between 12V terminal on

clutch solenoid, replace fan

alternator and fan clutch

clutch solenoid (WP 0098 00).

solenoid positive (green

wire) terminal. Fan clutch

should move in and out as

power is supplied and

removed. A clicking

sound should be heard

from solenoid and air

being expelled from valve

side of solenoid.

a. If required air pressure is

b. If fan clutch solenoid is

not present, replace fan

operating

properly,

clutch solenoid (WP 0098

disconnect fan clutch air

00).

hose and check for

required

operating

pressure of 90-120 psi

(621-827 kPa), while

actuating fan clutch

solenoid using jumper

wire.

0006 00-20