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Groundsmaster 4100--DPage 5 -- 22Electrical System
Hydraulic Valve Solenoids
Figure 32
1. 4WD manifold
2. LH deck manifold
3. RH deck manifold
4. Front deck manifold
5. Fan drive manifold
FRONT
RIGHT
1
2
3
4
5
There are several hydraulic valve solenoids on the
Groundsmaster 4100--D (Fig.32). Testing of these sole-
noids can be done with the solenoid on the hydraulic
valve.
Testing
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 val-
ue 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.
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. Whentesting iscomplete,connectwireharness con-
nector to the solenoid.
Figure 33
1. Manifold (RH deck manifold shown)
2. Valve solenoid
3. Solenoid connector
2
1
3