TM 9-2320-260-10
Table 3-1. Troubleshooting
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ENGINE
1. WHEN STARTER SWITCH IS TURNED TO START, ENGINE FAILS TO CRANK OR CRANKS
SLOWLY.
Step 1.
Check to see if battery switch is off.
Turn switch on.
Step 2.
Visually check to see if battery cables are loose, broken, or corroded. Visually check
battery terminals and connections for looseness damage, and corrosion. Check battery for
proper water level.
Notify organizational maintenance if water is to be added and of any damage to batteries,
cables, and terminals.
2. ENGINE CRANKS BUT DOES NOT START.
NOTE
Do not completely fill fuel tank(s) before checking visually for leaks in fuel system.
Step 1.
Check to see if emergency engine stop control is partially pulled out.
If control is pulled out, notify organizational maintenance to check out emergency shut
down conditions before trying to start engine.
Step 2.
Check to see if fuel gage indicates empty.
Fill fuel tank(s).
NOTE
Whenever fuel tank(s) are completely drained and then refilled, the fuel system
must be purged of air (refer to paragraph 3-11f.).
3. ENGINE CRANKS BUT FAILS TO START AT OUTSIDE TEMPERATURES BELOW 0°F (-17°C).
Step 1.
Perform steps 1 and 2 of malfunction 2.
Step 2.
See if glow plug is energized.
If not energized, turn the glow plug switch on.
4. ENGINE STARTS BUT MISFIRES, RUNS ROUGH, OR LACKS POWER.
Step 1.
Check operation of glow plug and hand pump.
Turn on glow plug switch and operate hand pump.
Step 2.
Check to see if emergency engine stop control is partially pulled out.
If control is pulled out, notify organizational maintenance to check out emergency shut
down conditions before trying to start engine.
Step 3.
Check fuel supply system for water and impurities.
Drain fuel filter into a container until fuel is clear (refer to paragraph 3-11e.). If complete
draining is required to obtain clear fuel, notify organizational maintenance to check fuel
tank(s) for contamination.
5. ENGINE OVERHEATS ACCORDING TO ENGINE COOLANT TEMPERATURE GAGE.
Step 1.
Check coolant level in surge tank.
Add coolant to surge tank until at least 3/4 full. Check for leakage from tank and hoses. If
leaking, notify organizational maintenance.
Step 2.
Check radiator core for obstructions.
If clogged, remove debris (see cleaning instructions table 2-1).
TA 094455
3-4
