Komatsu PW160-7H Operation & Maintenance Manual page 218

TROUBLESHOOTING
Problem
Exhaust gas occasionally turns
black
Combustion noise occasionally
make breathing sound
Abnormal noise generated (com-
bustion or mechanical)
218
Main causes
Clogged air cleaner element
●
Defective nozzle
●
Defective compression
●
Defective turbocharger
●
● Defective nozzle
Low-grade fuel being used
●
Overheating
●
Damage inside muffler
●
Excessive valve clearance
●
Remedy
Clean or replace, see WHEN
•
REQUIRED
( Replace nozzle)
•
( See defective compression
•
above)
Clean or replace turbocharger
•
( Replace nozzle)
•
Change to specified fuel
•
Refer to "Radiator water levelmon-
•
itor lights up" as above
Replace muffler
•
( Adjust clearance)
•
PW160-7H VEAM390100
OPERATION