TROUBLESHOOTING SECTION 6
DD-29/31HF/38HF Vibratory Asphalt Compactors 6-5
Engine Overheats - Stop Engine Immediately
Low Engine Oil Pressure - Red Warning Light Illuminates
Voltmeter Indicates Low or Negative Value
SYMPTOM POSSIBLE CAUSE SOLUTION
Engine Overheats -
Stop Engine
Immediately
Engine oil level too low
Check oil level. Replenish oil as
necessary
Engine belt broken Call for service to correct fault
Engine coolant level too low
Check coolant level. Replenish
coolant as necessary
Excessive dirt on cooling
system
Clean the cooling fins
Blocked cooling air flow Call for service to correct fault
Fan on radiator or radiator cap
defective
Replace defective component
Thermostat defective
Check thermostat. Replace if
defective
SYMPTOM POSSIBLE CAUSE SOLUTION
Low Engine Oil
Pressure - Red
Warning Light
Illuminates
Low engine oil level. (low
engine oil pressure warning
light should illuminate)
Fill oil level to dipstick mark
Lubrication system leak
Stop engine and check for
leaks. Tighten any loose fittings
on the system oil lines
SYMPTOM POSSIBLE CAUSE SOLUTION
Voltmeter Indicates
Low or Negative
Value
Speed of alternator too low
Check V-belt tension, change
belt if required
Not charging due to defective
alternator or regulator
Call for service to correct fault
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