Toro Outcross 9060 Service Manual page 282

Testing the Hydraulic Solenoid Valve Coils (continued)
Electrical System: Electrical Component 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 value from the measured value of the
component you are testing to obtain an accurate reading.
2. Using a multimeter (ohms setting), measure the resistance between the two
(2) connector terminals on the solenoid coil. The resistance for the solenoid
coils is identified below:
A. The coils of solenoid valves SP1 and SP2 on the main manifold, and the
optional SCV solenoid valve coils are the same. Resistance of these
coils should be approximately 7.1 ohms when tested at 20 C (68 F).
These are replaceable coils.
B. The coils of solenoid valves SV1, SV2, SV3 and EH on the main manifold
are the same. Resistance of these coils should be approximately 7.3
ohms when tested at 20 C (68 F). These are not replaceable coils. If
one of these coils fail a resistance test, replace the entire valve assembly;
refer to Cartridge Valve Service (page
3. Replace serviceable coils as necessary:
A. Remove the nut from the hydraulic valve.
B. Slide the solenoid coil from the valve.
C. Clean any corrosion or dirt from the valve stem.
D. Install the coil and the nut onto the valve and tighten nut to 7 N∙m (60
in-lb).
4. If the solenoid coil resistance is correct and a circuit problem still exists,
check the wire harness; refer to
5. After testing is completed, connect the wire harness connector to the
solenoid coil.
5–88).
Appendix A (page
Page 6–74
A–1).
Outcross 9060
18234SL Rev B