D439E Service Manual 2. Engine Mechanical System (D439E)
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Removal
1. Remove the coolant drain plug and drain the
coolant.
2. Loosen the alternator (1) tension adjusting screw
(2) and remove V-belt (3).
3. Remove the cooling fan
4. Remove water pump pulley (1) and water pump
assembly (2).
5. Disassemble the coolant temperature sensor
connector and remove the thermostat housing (1)
from the cylinder head.
a. Remove the thermostat cover.
b. Remove the thermostat.
c. Disassemble the bypass pipe from the
thermostat case.
d. Remove the coolant temperature sensor.