Komatsu WA800-1 Operation & Maintenance Manual page 121

TROUBLE SHOOTING GUIDE
ENGINE
The engine oil pressure monitor flashes.
The engine does not start when the starting motor is turned
l Add the oil to the specified level.
over.
l Replace the oil element.
l Check oil leakage from the pipe or the joint.
l Replace the monitor.
Add fuel.
Supply the coolig water and check leakage.
Replace fan belt.
Wash out inside of cooling system.
Clean or repair the radiator fin.
Replace the thermostat.
Steam is emitted from the front part of the radiator (the pres-
Tighten the radiator cap firmly or replace the gasket of it.
sure valve).
Engine oil temperature monitor flashes.
Replace the monitor.
Repair where air is leaking into fuel system.
Replace the injection pump or the nozzle.
Check the valve clearance.
Check engine compression pressure.
Refer to the section of electrical system.
Exhaust gas is white or blue.
. Adjust to specified oil quantity.
l Replace with specified fuel.
Exhaust gas occasionaly turns black.
l
l
0
Clean or replace the air cleaner element.
l Replace the nozzle.
l Check engine compression pressure.
l Clean or replace the turbocharger.
Combustion noise occasionally changes to breathing sound.
l Replace the nozzle.
Unusual combustion noise or mechanical noise.
. Replace with specified fuel.
l
Check over-heating.
l Replace the muffler.
l Adjust valve clearance.
W-02108
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