Toro 3200, Руководство по обслуживанию

Страница: 111 / 274

Adjusting Cutting Unit Lift and Drop
The machine’s cutting unit lift/drop circuit has a flow con-
trol valve which is preset at the factory to about 3 turns
open. An adjustment may be required to compensate for
differences in hydraulic oil temperatures, mowing
speeds, etc. If an adjustment is required proceed as fol-
lows:
Note: Allow hydraulic oil to reach full operating tem-
perature before adjusting flow control valve.
1. Raise seat and locate flow control valve mounted to
the hydraulic cylinder for the center pull frame.
1
2
2. Loosen set screw on the adjusting knob of the flow
Figure 13
control valve.
1. Flow control valve 2. Rear hydraulic cylinder
3. If center cutting unit is dropping too late, rotate knob
1/4 turn counterclockwise.
4. If the center cutting unit is dropping to early, rotate
knob 1/4 turn clockwise.
5. After desired setting has be achieved, tighten set
screw.
Adjusting Implement Relief Valve (R5)
The hydraulic lift and steering circuits are equipped with
a relief valve. This valve is preset at the factory to 1000
is required proceed as follows:
Never adjust the relief valve with the
hydraulic system pressurized. Hydraulic
oil will spray out of the valve with the cap
install the cap and tighten before pressur-
izing the system.
1. Remove cap from the relief valve with an allen
wrench.
2. increase
socket inside the valve 1/8 of a turn clockwise.
3. decrease pressure setting, turn the adjustment
socket inside the valve 1/8 of a turn counterclockwise.
4. Install and tighten cap to valve. Retest pressure set-
CAP
ADJUSTMENT
HEX SOCKET
PSI. An adjustment may be required if the setting proves
to be off after testing (see TESTING). If an adjustment
off. Personal injury may result. Always
WARNING
To pressure setting, turn the adjustment
To
ting (see TESTING).
Figure 14
Hydraulic
System
Greensmaster 3200/3200–D Page 5 – 39 Hydraulic System