Toro Groundsmaster 3280-D Service Manual page 199

Installing the Steering Control Valve
Groundsmaster ® 3280-D/3320
05138SL Rev B
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 5–11).
2. Slide the steering control valve onto the steering column. Secure the steering
control valve to the steering column with the 4 socket-head screws (item
21 in Figure 94).
3. Remove the caps and plugs that were installed to the hydraulic lines and
fittings during the removal process.
4. 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
5. Position the tower panel to the machine and secure the panel with the 6
phillips-head screws.
6. Install the knob on the end of the parking brake rod.
7. Check the hydraulic-fluid level in the hydraulic reservoir (front axle) and add
correct quantity of fluid if necessary; refer to the Operator's Manual.
8. After you complete the assembly, rotate the steering wheel to check that
the hydraulic hoses and fittings do not contact anything and that there are
no leaks.
9. Operate the machine functions slowly until air is out of system; refer to
Charging the Hydraulic System (page
Installing the Hydraulic Hose and
5–9).
5–85).
Page 5–115
Installing the
Hydraulic System: Service and Repairs