Toro Field Pro 6040 Service Manual page 189

Testing the Hydraulic Solenoid Valve Coils (continued)
Field Pro® 6040
22267SL Rev A
be approximately 8.8 ohms when tested at 20° C (68° F). Measure the
resistance across the coil terminals in both directions. The specified
resistance should only be obtainable in one direction, confirming that both
the coil and the diode are functioning properly.
B. The coils of solenoid proportional valve SP on the laser control manifold
are the same. Resistance of these coils should be approximately 8.8
ohms when tested at 20° C (68° F).
3. Replace solenoid valve coils if 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.
Appendix A (page
Page 6–25 Electrical System: Testing the Electrical Components
A–1).