Service Manual

13
3
COOLING SYSTEM
THERMOSTAT
Removing Thermostat – Engine Cold
1. Drain engine coolant.
2. Remove screws and coolant outlet housing.
3. Remove locating screw and thermostat, Fig. 3.
4. Remove all traces of gasket material.
Fig. 3 – Removing Thermostat
LOCATING
SCREW
COOLANT
OUTLET
THERMOSTAT
Checking Thermostat
A thermometer capable of reading 100° C (210° F) or
more is required.
1. Check to make sure thermostat valve is fully closed.
2. Immerse thermostat in water and heat water
gradually, Fig. 4.
3. Note temperature when thermostat starts to open.
a. 81 ~ 84° C (178 ~ 183° F)
4. Note temperature when thermostat is fully open.
a. 95° C (203° F)
5. Remove thermostat from water and allow to cool.
a. Thermostat should close fully.
Fig. 4 – Checking Thermostat
Installing Thermostat
1. Insert thermostat in housing and install locating
screw, Fig. 5.
2. Install coolant outlet housing with new gasket.
3. Torque screws to 8.0 Nm (70 in. lbs.).
Refill with coolant.
Fig. 5 – Installing Thermostat
LOCATING SCREW