TM 5-1940-322-24
0006 00
MECHANICAL SYSTEMS TROUBLESHOOTING (Contd)
Table 1. Engine Troubleshooting Procedures (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Check coolant level in reservoir and
If coolant is low, add coolant to proper
9. ENGINE COOLANT
header tank.
TEMPERATURE
level.
ABOVE NORMAL
2. Check drivebelt tension.
1. If drivebelt is loose, adjust tension
2. If unable to tighten tension, replace
tensioner (WP 0087 00).
3. If drivebelt is missing, replace
drivebelt (WP 0086 00).
3. Check for damaged or clogged keel
1. If clogged, clean keel cooler
coolers or pipes.
(TM 5-1940-322-10).
2. If damaged, replace keel cooler
4. Check thermostat and water pump
1. Replace damaged thermostat
for damage.
2. Replace damaged water pump
5. Check keel cooler for debris.
Flush keel cooler (TM 5-1940-322-10).
1. Check engine for normal operating
Replace thermostat if stuck in open
10. ENGINE HAS
temperature.
position (WP 0092 00).
EXCESSIVE
EXHAUST SMOKE
2. Check for air filter for damage or
1. If dirty, clean air filter
clogging.
2. If damaged, replace air filter
3. Check for leaks between
Repair leaks as needed (WP 0106 00).
turbocharger and intake manifold.
4. Check for worn or damaged fuel
Replace malfunctioning fuel injectors
injectors.
5. Check for malfunctioning
Replace malfunctioning turbocharger
turbocharger.
1. Check throttle linkage for correct
Adjust throttle linkage stop-to-stop
11. ENGINE WILL NOT
position.
position on control lever (WP 0033 00).
REACH RPM WITH
NO LOAD
2. Ensure stop control cable is
Adjust stop control cable and control
disengaged and engine stop lever is
lever (WP 0035 00).
disengaged.
3. Check fuel injectors for damage or
Replace fuel injectors if damaged or
restrictions.
restricted (WP 0100 00).
4. Check fuel supply for restrictions.
Clean or replace fuel filter
5. Check for worn or damaged
Repair or replace turbocharger
turbocharger.
