TM 9-2320-289-20
Table 2-3. Mechanical Troubleshooting (Con’t)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
AMBULANCE PERSONNEL HEATER
33. SMOKY HEATER EXHAUST AFTER 5 MINUTES CONTINUOUS OPERATION
WARNING
Before checking for restrictions, allow exhaust pipe to cool. Failure to
follow this warning will result in serious burns.
Step 1.
Check air inlet or exhaust outlet for restrictions.
Remove any restrictions.
If there are no restrictions, replace heater, (See paragraph 10-36)
34. STARTS BUT SHUTS OFF COMPLETELY
Step 1.
Ensure that truck fuel tank is at least
Step 2.
Inspect air passages for restrictions.
Clear restrictions. Allow system
¼ full. Add fuel if low.
to cool before retesting.
WARNING
Diesel fuel is flammable. When disconnecting fuel lines to test fuel flow,
direct fuel spray away from source of ignition. A fire extinguisher must be
on hand in work area. Failure to follow this warning may result in serious
injury or death to personnel.
Step 3.
Remove side panel from heater compartment. Disconnect fuel line from inlet side
of heater. Place suitable container under inlet line. Check for fuel flow to heater
while holding run-start switch in the “START” position.
If fuel flow is evident, replace heater (See
If fuel flow is not evident, perform step 4.
Step 4.
Check for restrictions in heater inlet fuel line.
If line is restricted, clear restriction.
paragraph 10-36)
2-48
