Oil Is In Coolant (Or Coolant Spurts Back Or Coolant Level Goes Down) - Komatsu WA250-6 Shop Manual

SEN03850-00
S-11 Oil is in coolant (or coolant spurts back or coolant level goes down)
General causes why oil is in coolant
Internal leakage in lubrication system
q
Internal leakage in cooling system
q
Confirm recent repair history
Degree of use of machine
Oil level
Hard water is being used as coolant
Oil level has risen and oil is milky
There are excessive air bubbles in radiator, coolant spurts back
Hydraulic oil or power train oil on applicable machine side is milky
When hydraulic oil or power train oil is drained, water is found
Pressure-tightness test of cylinder head shows there is leakage
Inspect cylinder block directly
Pressure-tightness test of oil cooler shows there is leakage
18
40-600
S-11 Oil is in coolant (or coolant spurts back or coolant level goes down)
Operated for long period
Suddenly rose
Gradually rose
600 Troubleshooting of engine (S-mode)
Causes
E E
Q Q
Q Q
Q Q
Q Q w
w
q
q q
q
Remedy
WA250, 250PZ-6
1
Q
w
w
Check directly
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