Workshop Manual

Table Of Contents
© 12/2008 17836-001
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6
D 2011 w Cooling system
TD 2011 w, TCD 2011 w W 09-08-01
Checking the thermostat (in the removed state)
Commercial available tools:
Thermometer
W 09-08-02
Danger!
Risk of injury!
Hot water and hot thermostat.
Checking thermostat
z Remove thermostat.
W 09-08-02
z Measure beginning of stroke, dimension (a).
z Note measured value, dimension (a).
© 34679-3
z Heat up the thermostat in the water bath.
z Determine beginning of opening.
86 - 90 °C
In order to determine the exact beginning
of opening, the temperature should be
measured as close as possible to the ther-
mostat.
The water should be continuously stirred
for an even temperature distribution. The
temperature rise should not take place
faster than 1°C/min. Otherwise the begin-
ning of opening will be delayed accordin-
gly.
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