Rear Wheel Drive Solenoid - Toro Reelmaster
4000?D Service Manual

Rear Wheel Drive Solenoid

RM 4000−D 4WD
MANIFOLD BLOCK
1. Disconnect the wire connector.
Note: Prior to taking small resistance readings with a
digital multi meter, short the 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 component you are
testing.
2. Check resistance of coil with a digital multimeter.
Resistance should be about 7.2 ohms.
3. Connect a 12 volt battery so the positive (+) battery
terminal is connected to colored solenoid lead. Connect
the negative (−) battery terminal to black lead. The valve
spool should retract completely as 12V DC is applied
across the leads.
4. If valve spool does not retract, check for binding or
damage in valve.
Electrical System (Rev. C)
Figure 18
5. If valve operates smoothly, but does not retract
when 12V DC is applied to solenoid leads, replace sole-
noid coil.
6. If valve still does not retract after replacing solenoid
coil, replace the valve.
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Figure 19
Reelmaster 4000−D