Toro Groundsmaster 4300-D Service Manual page 208

Installing the Lift Cylinder
Hydraulic System: Service and Repairs
1. If the hydraulic fittings were removed from the lift cylinder, lubricate new
O-rings with clean hydraulic fluid, position the O-rings to the fittings, and
install the fittings into the lift cylinder ports; refer to
Fittings (SAE Straight Thread O-Ring Fitting into the Component Port) (page
4–11). Ensure that the fittings are orientated correctly.
2. Position the lift cylinder to the frame.
Note: The lift cylinder barrel end should be attached to the machine frame.
3. Slide the barrel end of the lift cylinder onto the pivot shaft. Secure the cylinder
with the flange-head screw (item 12 in
the flange-head screw to 91 to 112 N∙m (67 to 83 ft-lb).
4. Align lift cylinder to the lift arm mounting holes. Slide the cylinder slide pin
(item 1 in Figure 111) (with a thrust washer and retaining ring installed on
the one end) through the lift cylinder and lift arm. Install the second thrust
washer on pin and secure with the retaining ring.
5. Remove the caps and plugs that were installed to the hydraulic hoses and
fittings during the removal process.
6. Put a coating of clean hydraulic fluid on new fitting O-rings, install the O-rings,
and connect the hydraulic hoses to the fittings on the lift cylinder. Tighten the
hose connections; refer to
Face Seal Fitting) (page
7. If the lift cylinder for deck #4 or #5 was removed, secure the R-clamp to the
lift cylinder with the flange nut and carriage screw
8. Lubricate the lift cylinder grease fittings.
9. Check the hydraulic-fluid level in the hydraulic tank and add correct quantity
of fluid if necessary; refer to the Operator's Manual.
10. Operate the machine functions slowly until air is out of system; refer to
Charging the Hydraulic System (page
Figure
Installing the Hydraulic Hose and Tube (O-Ring
4–9).
4–94).
Page 4–146
Installing the Hydraulic
111) and flat washer. Torque
(Figure 113).
Groundsmaster
16226SL Rev C
® 4300-D