Table 5. Engine Troubleshooting Procedures.

TM 9-2320-312-10

TROUBLESHOOTING PROCEDURES - CONTINUED

0010 00

Table 5. Engine Troubleshooting Procedures.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1. Engine Coolant Temperature Gauge (and

Warning Light and Alarm) Indicates Engine

is Overheating.

WARNING

DO NOT service cooling system unless engine has cooled to 120F (50C) as indicated on coolant tempera-

ture 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.

1. Check engine coolant level in

If coolant is low, fill to correct

level (WP 0011 00 and WP 0012

coolant overflow bottle.

00).

2. Check cooling system for

If leaks are found, notify Unit

Maintenance.

leaks.

3. Check if radiator cooling fins

Remove anything that blocks or

impedes cooling fins.

are free of mud, snow, ice or

debris.

4. Check serpentine drive belt for

If belt is loose, notify Unit

Maintenance.

looseness.

5. Check engine oil level.

If engine oil is low, fill to correct

level (WP 0011 00 and WP 0012

00).

6. Check

transmission

fluid

If transmission fluid level is low,

fill to correct level (WP 0011 00

level.

and WP 0012 00).

2. Engine Cranks But Fails to Start.

1. Check fuel gauge with ignition

1. If empty, add fuel (WP 0013

00).

switch in ON position.

2. If engine still fails to start,

prime fuel system (WP 0013

00).

2. Check air cleaner restriction

If yellow band has risen to red

area on gauge, service engine air

indicator.

cleaner (WP 0015 00).

3. If below 32F (0C), check

If red light is on, notify Unit

Maintenance.

indicator light on ether

electronic control relay.

3. Engine Does Not Develop Full Power.

Check air cleaner restriction

If yellow band has risen to red

area on gauge, service engine air

indicator.

cleaner (WP 0015 00).

0010 00-4