Engine
SHOP MANUAL MT26-31 - 06.2005
Tier-3 710655-
Ch 1 page 149
Oil in coolant
Oil cooler leaks when
engine is running
Test pressurize the oil cooler
Note: classed oil cooler, test pressurized: 10 bar oil
on the oil side, 0.5 bar air on the water side, im-
mersed in water 25 - 27 °C
Defective cylinder head
gasket
Crack in cylinder head
(not cracks between
valve seats).
If the fault is hard to trace:
Change all cylinder heads for exchange cylinder
heads.
(Or test pressurize all cylinder heads. Heat the cyl-
inder heads before pressurizing them.)
Effect Cause Troubleshooting Action
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