10-26
Chapter 10 COOLING SYSTEM
2.6 Thermostat - Inspect
(1) Immerse the thermostat in a container filled with water.
(2) Heat the water while measuring water temperature.
Record the temperature at which valve start to open,
and at which valve lift becomes to the standard
value.Replace the thermostat if a deviation from the
standard temperature is unusual.
Note:(a) Stir the water to maintain uniform temperature dur-
ing the test.
(b) At assembling, be sure to check the valve opening
temperature marked on the side of thermostat valve.
Thermostat Operation - Inspect
Thermostat motion diagram
Be very careful with hot water and flames.
Or, you may get burned or cause a fire.
Item Standard value
Temperature at which primary valve starts to
open
69 to 73 ºC
[157 to 163 ºF]
Temperature at which secondary valve starts
to open
72 to 76ºC
[161 to 168ºF]
Temperature at which valve lift becomes 10
mm [0.35 in.] or more
85 ºC [185 ºF]
Stir the water with a stick.
10
0
85ËšC [185.0ËšF]
72 to 76ËšC
[161.6 to 168.8ËšF]
Secondary valve opening
Temperature:
Primary valve opening
temperature:
[0.39]
69 to 73ËšC
[156.2 to 163.4ËšF]
Lift
(mm [in.])
To Next Page
Loading...
Need help?
General
