High Temperature Warning And Shutdown Switch - Toro Reelmaster 5500-D Service Manual

High Temperature Warning and Shutdown Switch

The high temperature warning and shut down switch is
located on the right side of the water flange that is at-
tached to the front of the engine cylinder head. There is
a green/white wire attached to the switch (Fig. 19).
Make sure engine is cool before removing the
temperature switch.
1. Lower coolant level in the engine and remove the
temperature switch.
2. Put switch in a container of oil with a thermometer
and slowly heat the oil (Fig. 20).
Handle the hot oil with extreme care to prevent
personal injury or fire.
3. Check continuity of the switch with a multimeter
(ohms setting). The temperature switch is normally
open and should close between 216 to 226_F (102 to
108_C).
4. Allow oil to cool while observing temperature. The
temperature switch should open at about 208_F (98_C).
5. Replace switch if necessary.
6. Install sender to the water flange.
A. Clean threads of water flange and sender thor-
oughly. Apply Permabond #LH150 sealant or equiv-
alent to the threads of the water flange.
B. Screw sender into the water flange and tighten.
C. Connect green/white wire to sender. Apply skin-
over grease to sender terminal.
7. Fill engine cooling system (see Check Cooling Sys-
tem in Chapter 3 - Kubota Diesel Engine).
Electrical System (Rev. C)
CAUTION
CAUTION
1. Temp. warning and shut-
down switch
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2
1
Figure 19
2. Water flange
Figure 20
Reelmaster 5500-D