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Page Title:
TABLE 5-1. SERVICE TROUBLES AND REMEDIES (Cont'd) |
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 TM 10-3930-623-12
TABLE 5-1. SERVICE TROUBLES AND REMEDIES (Cont'd)
Trouble
Probable Cause
Remedy
ENGINE (Cont'd)
ENGINE SLUGGISH,
MISSES, BACKFIRES
(Cont'd)
Valve timing incorrect
Correct timing
Overheating
Check cause and correct
Restricted exhaust
Remove obstruction and correct
Insufficient coolant
Add coolant
ENGINE OVERHEATS
Late ignition timing
Check timing adjustment
Improper valve timing
Check valve adjustment
Thermostat defective
Replace
Water pump not working properly
Replace pump
Fan not working properly
Check fan mounting
Fan belt slipping or broken
Adjust or replace as necessary
Lack of oil
Fill crankcase to proper level
Exhaust pipe restricted
Clean and remove restriction
Defective thermostat
Replace
ENGINE TEMPER-
ATURE TOO LOW
Weather or climatic conditions too
Cover radiator sufficiently to
(OVERCOOLING)
cold to allow thermostat to hold
bring coolant into proper range
temperature
or use winter front
ENGINE NOISES
Wrong ignition timing
Adjust ignition timing
SHARP PING
Wrong grade of fuel
Fill tank with proper grade
of fuel
Excessive carbon deposits
Clean
5-18
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