Multi Pro 5700 - Toro
Multi Pro 5700 - Toro
Multi Pro 5700 - Toro
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Pulse Width Modulated (PWM) Valve Solenoid<br />
The Pulse Width Modulated (PWM) Valve which controls<br />
hydraulic flow to the spray pump motor includes an<br />
electric solenoid (Fig. 30). When the spray console rate<br />
switch is depressed, the available current to the PWM<br />
valve solenoid is changed. This solenoid current change<br />
causes a valve shift and subsequent change in hydraulic<br />
flow to the spray pump motor. Testing of the PWM<br />
Valve solenoid can be done without removing the solenoid.<br />
1<br />
3<br />
Testing<br />
NOTE: Prior to taking small resistance readings with a<br />
digital multimeter, short the meter test leads together.<br />
The meter will display a small resistance value (usually<br />
0.5 ohms or less). This resistance is due to the internal<br />
resistance of the meter and test leads. Subtract this value<br />
from from the measured value of the solenoid you are<br />
testing.<br />
1. PWM valve<br />
2. Solenoid<br />
2<br />
Figure 30<br />
3. Solenoid connector<br />
1. Make sure ignition switch is off. Disconnect PWM<br />
Valve solenoid electrical connector.<br />
SERIAL NUMBER ABOVE 260000300<br />
2. Measure resistance between the two solenoid connector<br />
terminals. The resistance for the solenoid coil<br />
should be approximately 9.6 ohms.<br />
NOTE: The solenoid coil on machines with serial numbers<br />
below 260000300 is not available as a separate<br />
component (shown in Fig. 30). On machines with serial<br />
numbers above 260000300, the coil is available as a<br />
separate component (Fig. 31). Refer to your parts catalog<br />
for replacement part information.<br />
4<br />
3<br />
1<br />
Electrical<br />
System<br />
3. Reconnect electrical connector to the solenoid.<br />
2<br />
1. PWM valve<br />
2. Solenoid coil<br />
Figure 31<br />
3. O -ring<br />
4. Nut<br />
<strong>Multi</strong> <strong>Pro</strong> <strong>5700</strong>--D Page 5 - 19 Rev. D<br />
Electrical System