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35. “RAPPlNG” SOUND FROM ONE OR MORE CYLINDERS | Up
/.25ton/TM-9-2320-289-34 CUCV Series Trucks at intermediate direct support and general support level Manual | Next
ENGINE COO/ANT HEATER |
TM 9-2320-289-34
Table 2-1. Mechanical Troubleshooting (Con’t)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
HEATER (ALL EXCEPT ENGINE COOLANT HEATER)
37. WILL NOT START
Step 1.
Step 2.
Step 3.
Step 4.
Step 5.
Step 6.
Replace igniter, (See paragraph 11-3)
Replace ignition control, (See paragraph 11-3)
Remove overheat switch. (See paragraph 11-3) Check for continuity through
switch contacts.
If there is no continuity, replace overheat switch.
Remove frame detector switch. (See paragraph 11-3) Check condition of ceramic
rod.
Replace ceramic rod if damaged.
Remove fuel control valve. (See paragraph 11-3) inspect all components for
looseness or damage. Check fuel line connectors for clogs.
Tighten any loose components. Replace any damaged components. Clean
fuel line connectors if clogged.
Remove burner. (See paragraph 11-3) Inspect vaporizer and wick for damage.
If only vaporizer or wick are damaged, replace. If both vaporizer and wick are
damaged, repair burner using rear vaporizer kit.
38. SMOKY HEATER EXHAUST AFTER 5 MINUTES CONTINUOUS OPERATION
Step 1.
Remove fuel control valve. (See paragraph 11-3) Inspect all components for
looseness or damage.
Tighten any loose components. Replace any damaged components.
39. BLOWER MOTOR CONTINUES TO RUN AFTER HEATER IS TURNED OFF
Step 1.
Remove flame detector switch. (See paragraph 11-3) Check condition of ceramic
rod.
Replace ceramic rod if damaged.
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