caution - Toro

Hydraulic Valve Solenoids
RIGHT
5
3
1
FRONT
2
4
1. 4WD manifold
2. LH deck manifold
Figure 32
3. RH deck manifold
4. Front deck manifold
5. Fan drive manifold
There are several hydraulic valve solenoids on the
Groundsmaster 4100--D (Fig. 32). Testing of these solenoids
can be done with the solenoid on the hydraulic
valve.
Testing
3. Install new solenoid if necessary. Torque solenoid
nut to 5 ft-lb (6.7 N-m). Over--tightening may damage
the solenoid or cause the cartridge valve to malfunction.
4. When testing is complete, connect wire harness connector
to the solenoid.
NOTE: Prior to taking small resistance readings with a
digital multimeter, short the meter test leads together.
The meter will display a small resistance value (usually
0.5 ohms or less). This resistance is due to the internal
resistance of the meter and test leads. Subtract this value
from from the measured value of the component you
are testing.
1. Make sure engine is off. Disconnect wire harness
connector from the solenoid (Fig. 33).
2. Measure resistance between the two (2) solenoid
connector terminals. The resistance for any solenoid
coil used on the Groundsmaster 4100--D should be
approximately 8.7 ohms.
2
3
Figure 33
1. Manifold (RH deck manifold shown)
2. Valve solenoid
3. Solenoid connector
1
Electrical System
Page 5 - 22
Groundsmaster 4100--D