Oil Becomes Contaminated Early - Komatsu PC200-8M0 Shop Manual

SEN06140-00
S-9 Oil becomes contaminated early
General causes why oil becomes contaminated early
q
Entry of exhaust gas into oil due to internal wear
q
Clogging of lubrication passage
q
Use of improper fuel
q
Use of improper oil
q
Operation under excessive load
Check recent repair history.
Machine operation hours
Fuel other than specified one is used
Oil must be added more frequently.
Metal particles are found in the removed oil filter.
Inside of exhaust pipe is dirty with oil.
Engine oil temperature rises quickly.
Color of exhaust smoke
Amount of blowby gas
Excessive play of turbocharger shaft
When compression pressure is measured, it is found to be low.
Check breather or breather hose.
Check oil cooler.
Check oil filter.
Spring of oil filter safety valve is stuck or broken.
Check turbocharger lubrication oil drain tube.
16
40-600
Operated for long period
Blue under light load
Black
Excessive
None
600 Troubleshooting of engine (S-mode)
S-9 Oil becomes contaminated early
Cause
E E E
Q
w
Q Q
w
w
w
Q Q w
w
q
q q
q
q
Remedy
PC200, 200LC, 220, 220LC-8M0
Q
w
w
Q
q
q
q