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TM 5-4210-220-34
SECTION II. DIRECT SUPPORT TROUBLESHOOTING
2-4.
GENERAL.
Troubleshooting at the Direct Support Maintenance Level requires you to locate any trouble as quickly as possible. Once
the trouble is located, repair or replace the part if you are authorized to do so or determine if General Support Maintenance
is required.
2-5.
PROCEDURES.
Repairs by Direct Support maintenance are limited to those repairs in which neither the engine nor transmission requires
removal. Before using the troubleshooting table, (see table 2-1) check your work order and talk to the Organizational level
or operator, who may have checked the symptoms and ruled out certain faults prior to referring the unit to Direct Support.
2-6.
SYMPTOM INDEX.
Refer to table 2-1, TROUBLESHOOTING under the number of the symptom in this index to determine the tests and
corrective action required.
FIRE PUMP
WON’T PRIME ............................................................................................................................................................ 1a
NOISY OPERATION ................................................................................................................................................... 1b
LEAKING ..................................................................................................................................................................... 1c
TRANSMISSION
OIL LEAK AT OUTPUT SHAFT .................................................................................................................................. 2a
ENGINE
WON’T START ............................................................................................................................................................ 3a
RUN ERRATICALLY .................................................................................................................................................... 3b
LOW POWER ............................................................................................................................................................. 3c
LOW OIL PRESSURE ................................................................................................................................................. 3d
FUMES AT ROAD DRAFT TUBE ............................................................................................................................... 3e
EXHAUST SMOKE - BLACK ..................................................................................................................................... 3f
EXHAUST SMOKE - WHITE ...................................................................................................................................... 3g
HIGH OIL CONSUMPTION ........................................................................................................................................ 3h
OVERHEATING .......................................................................................................................................................... 3j
WON’T REACH OPERATING TEMPERATURE ........................................................................................................ 3k
2-2
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