Hydraulic Valve Solenoids - Toro Reelmaster 5500-D Service Manual

Hydraulic Valve Solenoids

Note: Prior to taking small resistance readings with a
digital multimeter, 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 the measured value of the component you are test-
ing.
1. Make sure engine is off. Disconnect solenoid valve
electrical connector.
2. Apply 12VDC source directly to the solenoid. Listen
for solenoid to shift.
3. Remove 12VDC source from the solenoid. Listen for
solenoid to return.
4. Measure resistance between the two connector ter-
minals.
A. The resistance for a 20 watt coil should be about
7.2 ohms.
B. The resistance for a 28 watt coil should be about
5.1 ohms.
5. Install new solenoid if necessary.
A. Make sure o-ring is installed at each end of the
coil. Apply "Loctite 242" or equivalent to threads on
end of valve stem before installing nut.
B. Tighten nut to a torque of 2 - 5 ft.-lb (2.7 - 6.8 Nm).
Over-tightening may damage the solenoid or cause
the valve to malfunction.
Note: Each electrical harness connection for the valve
solenoids has a colored power wire and black ground
wire attached to it.
Solenoid Power Wire Color
MSV1 Yellow/White
MSV2 Brown/White
SV1 Yellow/Black
SV2 Orange/Blue
SV3 Pink/Blue
SV4 Orange/Red
SV5 Yellow/Blue
6. Reconnect electrical connector to the solenoid.
Reelmaster 5500-D
2
8
7
6
1. 20 watt solenoid (MSV1)
2. 20 watt solenoid (MSV2)
3. Front reel speed control
4. Front backlap control
3
2
1. 20 watt solenoid (SV1)
2. 28 watt solenoid (SV2)
3. 20 watt solenoid (SV3)
Hydraulic Valve Solenoid Functions
The list below identifies and describes the function of
each valve solenoid on the hydraulic manifold. Each so-
lenoid functions when energized.
Solenoid Function
MSV1 Front reel circuit
MSV2 Rear reel circuit
SV1 Lower or lift any cutting units
SV2 Lift any cutting units
SV3 Lift/lower front, center cutting unit
SV4 Lift/lower left and right front cutting units
SV5 Lift/lower rear cutting units
Page 5 - 19
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Figure 17
5. Front backlap switch
6. Rear reel speed control
7. Rear backlap control
8. Rear backlap switch
4
5
1
Figure 18
4. 20 watt solenoid (SV4)
5. 20 watt solenoid (SV5)
Electrical System (Rev. C)
3
4
5