Multi Pro 5700 - Toro
Multi Pro 5700 - Toro
Multi Pro 5700 - Toro
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Temperature Sender<br />
The temperature sender is located near the alternator<br />
on the water flange attached to the engine cylinder head<br />
(Fig. 17). There is a blue wire attached to the terminal of<br />
the sender.<br />
1<br />
Testing<br />
1. Lower coolant level in the engine and remove the<br />
temperature sender from water flange.<br />
2. Put sender in a container of oil with a thermometer<br />
and slowly heat the oil (Fig. 18).<br />
CAUTION<br />
Handle the hot oil with extreme care to prevent<br />
personal injury or fire.<br />
Figure 17<br />
1. Temperature sender<br />
NOTE: Prior to taking resistance readings with a digital<br />
multimeter, short the meter test leads together. The meter<br />
will display a small resistance value (usually 0.5<br />
ohms or less). This resistance is due to the internal resistance<br />
of the meter and test leads. Subtract this value<br />
from from the measured value of the temperature sender<br />
you are testing.<br />
VOA<br />
3. Check resistance of the sender with a multimeter<br />
(ohms setting) as the temperature increases. The temperature<br />
sender is normally open and should close between<br />
216 to 226 o F (102 to 108 o C).<br />
Figure 18<br />
4. Allow oil to cool while observing temperature. The<br />
temperature sender should open at about 208 o F (98 o C).<br />
5. Replace sender if specifications are not met.<br />
6. Install temperature sender to the water flange.<br />
A. Clean threads of water flange and sender thoroughly.<br />
Apply thread sealant to the threads of the<br />
sender.<br />
B. Tighten sender into the water flange.<br />
C. Reconnect blue wire to sender.<br />
7. Fill engine cooling system (see Operator’s Manual).<br />
Electrical System Page 5 – 12 <strong>Multi</strong> <strong>Pro</strong> <strong>5700</strong>–D