Oil Is In Cooling Water, Or Water Spurts Back, Or Water Level Goes Down - Komatsu PC130-7 Shop Manual

TROUBLESHOOTING
S-11 Oil is in cooling water, or water spurts
back, or water level goes down
General causes why oil is in cooling water
• Internal leakage in lubrication system
• Internal leakage in cooling system
Confirm recent repair history
Degree of use of machine
Oil level
Hard water is being used as cooling water
Engine oil level has risen, oil is cloudy white
Excessive air bubbles inside radiator, spurts back
Hydraulic oil, transmission oil is cloudy white
When hydraulic oil, transmission oil is drained, water is
found
Pressure-tightness test of oil cooler shows there is leakage
Pressure-tightness test of cylinder head shows there is leakage
Remove oil pan and inspect directly
PC130-7
Operated for long period
Suddenly increased
Gradually increased
Remedy
Causes
S-11
20-619
(1)