COOLING SYSTEM
10-3
2. Disassembling, inspecting and reassembling cooling system
2.1 Disassembling and inspecting thermostat
Disassembling and inspecting thermostat
Disassembling sequence
2.2 Inspecting thermostat
&$87,21
Be careful of burns or a fire when measuring tempera-
ture, as it involves a high-temperature and open flame.
To test the thermostat operation, immerse the thermostat in a
container filled with water. Heat the water, while measuring
the water temperature. Record the temperature at the
conditions shown in the table below. If the temperatures are
not within the standard range, replace the thermostat.
Note: (a) Stir the water in the container with a stick to
ensure uniform temperature distribution.
(b) Before installing the thermostat, be sure to check
the valve opening temperature stamped on the
thermostat valve side face.
Inspecting thermostat
1 Thermostat cover 2 Thermostat 3 Thermostat case
1
2
3
Replace
Item Standurd
Temperature at which valve starts
opening
76.5 ± 1.5°C
[167 to 172°F]
Temperature at which valve lift becomes
6 mm [0.24 in.] or more
90°C
[194°F]
Stir hot water well.
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