Toro Groundsmaster 360 Service Manual page 193

Servicing the Cartridge Valves in a Control Manifold (continued)
Groundsmaster 360
16225SL Rev C
7. Use clean mineral spirits to clean the cartridge valve. Put the valve in clean
mineral spirits to flush out contamination.
Particles as fine as talcum powder can affect the operation of
high-pressure hydraulic valves.
If the cartridge design allows, use a wood or plastic probe to
press the internal spool in and out for 20 to 30 times to flush out
contamination.
Ensure that you do not damage the cartridge. Use compressed air
for cleaning.
8. Install the cartridge valve into the control manifold as follows:
A. Lubricate the new seal kit components with clean hydraulic fluid and
install the components onto the valve.
B. Install the O-rings, sealing rings, and back-up rings correctly on the
cartridge valve for proper operation and sealing.
C. Put the assembled cartridge into the clean hydraulic fluid.
Carefully handle the cartridge valve. Slight bending or distortion
of the stem tube can cause binding and malfunction. When
installing the cartridge valve into the control manifold, ensure
that the deep well socket fully engages the valve base.
D. Turn the cartridge valve carefully into the control manifold port until it
contacts the top of the O-ring. The valve should go into the port easily
without binding.
E. Use a deep socket wrench and torque the cartridge valve to torque
specification included in the control manifold illustration found in this
section.
9. If the cartridge valve is solenoid operated, carefully install the solenoid coil
into the cartridge valve and secure the coil to the valve with the nut; torque
the nut to 6.7 N∙m (60 in-lb).
10. If circuit problems still exist after assembly, remove the cartridge valve and
clean the valve again or replace the cartridge valve.
IMPORTANT
IMPORTANT
Page 4–135 Hydraulic System: Service and Repairs