Yuchai YC4D60-D21 - Too high water outlet temperature

41
Too high water outlet temperature
Possible causes
Remedies
Insufficient cooling water or too
small water flow
Check the level of cooling water, add water to
adequacy if necessary; check for looseness of
the belt, adjust it if necessary; check for leakage
of the water pump, repair it in time if necessary;
check and replace the damaged thermostat.
Too much scale in water passage
and tank
Clear it.
Thermostat failure
Check and replace the damaged thermostat
Water temperature indicator
damaged and transmitter failure
Check and compare the actual temperature with
the indication, if they are not same, replace the
transmitter or water temperature indicator.
Cooling fan damage
Repair or replace.
Water pump damage
Repair or replace.