Hydraulic Valve Solenoids
There are four hydraulic valve solenoids on the Ground-
smaster 4000−D (Fig. 23). Testing of these solenoids
can be done with the solenoid on the hydraulic valve.
5. Install new solenoid if necessary.
A. Apply “Loctite 242” or equivalent to threads on
end of valve stem before installing nut.
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
B. Torque solenoid nut to specification identified in
Figure 23. Over−tightening may damage the sole-
noid or cause the valve to malfunction.
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.
6.
Reconnect electrical connector to the solenoid.
1.
Make sure engine is off. Disconnect hydraulic valve
solenoid electrical connector (Fig. 22).
2.
Apply 12VDC source directly to the solenoid. Listen
for solenoid to switch on.
1
3.
solenoid to switch off.
Remove 12VDC source from the solenoid. Listen for
2
4.
minals. The resistance for the solenoid coil should be
about 7.2 ohms.
Measure resistance between the two connector ter-
3
Figure 22
1.
2.
Manifold (RH shown)
Valve solenoid
3.
Solenoid connector
4
2
(3
to 5 ft−lb
to 7 N−m)
2
1
3
4
(5
to 6 ft−lb
to 8 N−m)
RIGHT
FRONT
2
(3
to 5 ft−lb
to 7 N−m)
1
2
(3
to 5 ft−lb
to 7 N−m)
2
1
2
Figure 23
1.
2.
Hydraulic valve solenoid (decks)
Hydraulic manifold (decks)
3.
Hydraulic valve solenoid (traction)
4. Hydraulic manifold (traction)
Electrical System
Page 5 − 16
Groundsmaster 4000−D
| Categories | Lawn Mower Manual, Toro Lawn Mower Manual |
|---|---|
| Tags | Toro Groundsmaster 4000 D |
| Download File |
|
| Document Type | Service Manual |
| Language | English |
| Document File Type | |
| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
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