THERMOSTAT
REMOVAL AND INSTALLATION
1. Drain coolant into a suitable container.
2. Remove each part in sequence as given below.
(1) Upper radiator hose
(2) Thermostat cover
(3) Gasket
(4) Thermostat
3. Install in the reverse order of removal.
INSPECTION
Check operation and replace if necessary
1. Visually check valve to make sure it is air tight.
2. Place thermostat and a thermometer in water.
3. Heat water gradually.
4. Check initial valve opening temperature, fully open temperature and fully-
open lift.
Initial opening
temperature
Fully-open
temperature
Fully-open lift
OO
74 C ± 2 C
OO
90 C ± 2 C
9.5 mm (min)
FIG. 1
SERVICE MANUAL
B-72
FIG. 2
ITL
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