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Miscellaneous—Troubleshooting
KR46761,00013A2 -19-22SEP16-5/5
Symptom Problem Solution
Oil leaks Locate source of leak and repair as
required.
Excessive oil temperature
See an authorized Hitachi dealer.
Worn engine
See an authorized Hitachi dealer.
Engine Oil Pressure High
Incorrect engine oil
Drain crankcase and rell with correct
oil.
Engine Coolant Temperature
Above Normal
Lack of coolant in cooling system
Fill cooling system to proper level.
Radiator and/or cooler cores
restricted or dirty
Clean radiator and cooler cores as
required.
Loose surge tank cap
Secure cap properly.
Air lters restricted or dirty Replace air lter elements.
Low crankcase oil level Fill crankcase to proper oil level.
Incorrect engine oil
Drain crankcase and rell with correct
oil.
Engine overloaded Reduce engine load.
Engine Emits Excessive Black or
Gray Exhaust Smoke
Incorrect fuel Drain fuel tank and rell with correct
fuel.
Coolant temperature low Check for proper thermostat
temperature and operation. Replace
if necessary.
Engine Emits Excessive White
Exhaust Smoke
Incorrect fuel Drain fuel tank and rell with correct
fuel.
Cold engine
Run engine until warm.
Turbocharger Excessively Noisy
or Vibrates
Excessive crankcase pressure
See an authorized Hitachi dealer.
Oil Dripping From Turbocharger
Adapter
Excessive crankcase pressure
See an authorized Hitachi dealer.
Turbocharger oil return line carbon
buildup
Remove line. Inspect and clean.
NOTE: If any other problems are encountered which
require special tools or machine knowledge to
correct, see an authorized Hitachi dealer.
4-3-6
112321
PN=331
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