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

b. If transmission oil level is

1. Coolant Temperature Gauge (and Warning

low, fill to correct level

Light and Alarm) Indicate Engine is

(TM 9-2320-312-10).

Overheating - Continued).

a. If fan is loose, tighten

6. Check cooling fan for secure

mounting nuts to 26 lb-ft

mounting and/or damaged

(35 Nm).

blades.

b. If fan blades are damaged,

notify Direct Support

Maintenance to replace

cooling fan.

Perform required repairs.

7. Check engine diagnostic

codes

(Group

020

Commercial

Service

Manuals).

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.

2. Engine Runs Cold.

1. Check engine coolant level

If low, add coolant (TM 9-2320-

(TM 9-2320-312-10).

312-10).

If problem persists, refer to step

2. Check engine diagnostic

codes

(Group

020

3 below.

Commercial

Service

Manuals).

WARNING

DO NOT reach into fan area unless engine is shut

down. With engine running, fan 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).

0006 00-18