Toro Groundsmaster 4300-D Service Manual page 215

Removing the Steering Control Valve (continued)
Installing the Steering Control Valve
Groundsmaster ® 4300-D
16226SL Rev C
16. If necessary, remove the hydraulic fittings from the steering control valve.
17. Remove and discard the O-rings from the fittings.
1. If the hydraulic fittings were removed from the steering control valve, lubricate
new O-rings with clean hydraulic fluid, position the O-rings to the fittings,
and install the fittings to the steering control valve; refer to
Hydraulic Fittings (SAE Straight Thread O-Ring Fitting into the Component
Port) (page 4–11).
2. Apply anti-seize lubricant to the splines of the steering control valve input
shaft.
3. Slide the steering control valve input shaft into the steering column
universal joint. Position the control valve with the ports toward front of the
machine. Secure the steering control valve to the steering column with the 4
socket-head screws. Torque the socket-head screws to 9.5 to 13.5 N∙m (84
to 120 in-lb) in a criss-cross pattern.
4. Position the steering column assembly to the machine. Secure the steering
column in place with the 2 socket-head screws and 2 flange nuts at rear
two mounting holes.
5. Remove the caps and plugs that were installed to the hydraulic lines and
fittings during the removal process.
6. Lubricate new O-rings and use the labels that you attached during valve
removal to connect the hydraulic lines to the fittings on the steering control
valve. Tighten the connections; refer to
Tube (O-Ring Face Seal Fitting) (page
7. Position the steering column brace (item 12 in
and secure with the 4 screws and 4 flange nuts.
8. Slide the rubber bellows to the bottom of the steering column.
9. Place the rubber bushings and spacers into the holes of the shroud
116). Position the shroud in place and secure with the removed fasteners.
10. Check the hydraulic-fluid level in the hydraulic tank and add correct quantity
of fluid if necessary; refer to the Operator's Manual.
11. Operate the machine functions slowly until air is out of system; refer to
Charging the Hydraulic System (page
Installing the Hydraulic Hose and
4–9).
4–94).
Page 4–153
Installing the
Figure 115) to the machine
(Figure
Hydraulic System: Service and Repairs