D1146/D1146TI/DE08TIS
MAINTENANCE MANUAL
100
Printed in Jan. 2001 PS-MMA0415-E1A
mm or more (full open) at temperature of 95 °C, the thermostat is normal.
z Replacing thermostat and precautions for handling
(1) Precautions for handling
The wax pallet type thermostat does not react as quickly as bellows type one to
a variation of temperature of coolant. Such relatively slow reaction is mainly due
to the large heat capacity of the wax pellet type thermostat. Therefore, to avoid a
sharp rise of coolant temperature, it is essential to idle the engine sufficiently
before running it. In cold weather, do not run the engine at overload or
overspeed it immediately after starting off.
(2) When draining out or replenishing coolant, do it slowly so that air is bled
sufficiently from the entire cooling system.
(3) Replacing thermostat
If the thermostat is detected defective, replace with a new one.
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