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TM 9-4110-257-14
SECTION IV. TROUBLESHOOTING INSTRUCTIONS
4-12.
TROUBLESHOOTING.
The following procedures are listed in order of the most probable malfunctions. Each malfunction is followed by test or
inspection procedures in logical order to isolate and identify the fault and actions required to correct it. This section
cannot list all the possible malfunctions that may occur with the equipment. If a malfunction occurs that is not listed or
actions listed do not correct a malfunction, notify your supervisor.
a.
Engine Does Not Crank.
TEST BATTERY (PARA 4-35) AND REPLACE IF
NEEDED. DOES REFRIGERATION UNIT START?
YES
NO
TEST FUSES (PARA 4-23) AND REPLACE IF
NEEDED.DOES REFRIGERATION UNIT START?
YES
NO
TEST CIRCUIT BREAKER (PARA 4-21) AND REPLACE IF
NEEDED. DOES REFRIGERATION UNIT START?
YES
NO
TEST TOGGLE SWITCH (PARA 4-28) AND REPLACE IF
NEEDED. DOES REFRIGERATION UNIT START?
YES
NO
TEST REMOTE BULB THERMOSTAT (PARA 4-29) AND
REPLACE IF NEEDED. DOES REFRIGERATION UNIT
START?
YES
NO
PUT UNIT BACK INTO SERVICE.
TEST CONTROL RELAYS (PARA 4-24) AND REPLACE IF
NEEDED.
4-34
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