TM 9-2320-273-20
Table 4-1. Engine and Engine Systems Troubleshooting.
MALFUNCTION.
TEST OR INSPECTION.
CORRECTIVE ACTION.
1. ENGINE WILL NOT CRANK:
Step 1.
Check battery condition.
Test, charge, or replace as indicated by hydrometer (para 5-7).
Step 2.
Check battery cables and terminals for loose or dirty connections.
Clean and tighten connections.
Step 3.
Check electrical starting system.
a.
Troubleshoot starting system (para 5-8).
b.
Notify Direct Support Maintenance.
2. ENGINE WILL CRANK BUT NOT START:
Step 1.
Check fuel level in tank.
Add fuel, if required.
Step 2.
Check fuel solenoid shutoff valve.
Repair, if required (para 4-16).
Step 3.
Check for leaking fuel lines.
Tighten connections or replace fuel lines as required (para 4-20).
Step 4.
Check for air cleaner element restriction.
Service air cleaner element (para 4-24).
Step 5.
Check for white exhaust smoke.
Use cold weather starting aid (Refer to TM 9-2320-273-10).
Step 6.
Check for dirty fuel filter.
Service fuel filter (para 4-18).
Step 7.
Check for congealed fuel (cold weather).
Check fuel specifications (Refer to TM 9-2320-273-10).
3. ENGINE STOPS, NOT SEIZED:
Step 1.
Refer to steps 1 thru 7 of Malfunction 2 above.
Step 2.
Check for obstructed air vent in fuel tank.
Remove air vent (para 4-23), then clean.
4. ENGINE STOPS, SEIZED:
Refer problem to Direct Support Maintenance.
4-2
