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