High Temperature Warning and Shutdown Switches
The high temperature warning and shut down switches
are located on the water pump, which is located on the
rear end of the engine block. The high temperature shut-
down switch is on the alternator side of the engine (Fig.
11).
2
1
CAUTION
Make sure engine is cool before removing the
temperature switch.
1.
temperature switch.
Lower coolant level in the engine and remove the
3
Figure 11
1.
2.
Temp. warning switch
Temp. shutdown switch
3.
Water pump
2.
and slowly heat the oil (Fig. 12).
Put switch in a container of oil with a thermometer
CAUTION
Handle the hot oil with extreme care to prevent
personal injury or fire.
Note:
90150,
On units with serial numbers from 90101 to
the high temperature shutdown switch settings
are the same as the high temperature warning switch
below.
Figure 12
4.
Allow oil to cool while observing temperature.
3.
Check continuity of the switch with a multimeter
(ohms setting).
A. The high temperature warning switch should
open at about 208oF (98oC).
A. The high temperature warning switch is normally
open and should close between 216 to 226oF (102 to
B. The high temperature shutdown switch should
open at about 219oF (104oC).
108
oC).
B. The high temperature shutdown switch is normal-
ly open and should close between 225 to 235oF (107
5. Replace switch if necessary.
to 113oC).
Reelmaster 3100−D
Page 5 − 33
Electrical Systems (Rev. C)
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