Thermostat
Replacement
NOTE: Use new gaskets and O-rings when reassem-
bling.
ENGINE COOLANT
TEMPERATURE (ECT) GAUGE
SENDING UNIT
9 N-m (0.9 kg-m, 7 Ib-ft)
Apply liquid gasket
to the threads.
WATER PASSAGE
8 x 1.25 mm
22 N-m (2.2 kg-m,
16 Ib-ft)
BLEED BOLT
10 N-m (1.0 kg-m, 7 Ib-ft)
6 x 1.0 mm
12 N-m (1.2 kg-m,
9 Ib-ft)
ECT SWITCH
18 N-m (1.8 kg-m,
13 Ib-ft)
8 x 1.25 mm
22 N-m (2.2 kg-m, 16 Ib-ft)
THERMO COVER
O-RING Replace.
Testing
Replace thermostat if it is open at room temperature.
To test a closed thermostat:
1. Suspend the thermostat in a container of water as
shown.
2. Heat the water, and check the temperature with a
thermometer. Check the temperature at which the
thermostat first opens and at full lift.
CAUTION: Do not let thermometer touch the bottom
of the hot container.
3. Measure lift height of the thermostat when fully open.
STANDARD THERMOSTAT
Lift height: above 10 mm (0.39 in)
Starts opening: 169-176°F (76-80°C)
Fully open: 194°F (90°C)
THERMOMETER
THERMOSTAT
THERMOSTAT
Install with pin up.
Replacement
NOTE: Use new gaskets and O-rings when reassem-
bling.
ENGINE COOLANT
TEMPERATURE (ECT) GAUGE
SENDING UNIT
9 N-m (0.9 kg-m, 7 Ib-ft)
Apply liquid gasket
to the threads.
WATER PASSAGE
8 x 1.25 mm
22 N-m (2.2 kg-m,
16 Ib-ft)
BLEED BOLT
10 N-m (1.0 kg-m, 7 Ib-ft)
6 x 1.0 mm
12 N-m (1.2 kg-m,
9 Ib-ft)
ECT SWITCH
18 N-m (1.8 kg-m,
13 Ib-ft)
8 x 1.25 mm
22 N-m (2.2 kg-m, 16 Ib-ft)
THERMO COVER
O-RING Replace.
Testing
Replace thermostat if it is open at room temperature.
To test a closed thermostat:
1. Suspend the thermostat in a container of water as
shown.
2. Heat the water, and check the temperature with a
thermometer. Check the temperature at which the
thermostat first opens and at full lift.
CAUTION: Do not let thermometer touch the bottom
of the hot container.
3. Measure lift height of the thermostat when fully open.
STANDARD THERMOSTAT
Lift height: above 10 mm (0.39 in)
Starts opening: 169-176°F (76-80°C)
Fully open: 194°F (90°C)
THERMOMETER
THERMOSTAT
THERMOSTAT
Install with pin up.