Adjustments; Adjust Manifold Relief Valve - Toro ProPass 200 Service Manual

Adjustments

Adjust Manifold Relief Valve

The hydraulic relief valve manifold includes an adjust-
able relief valve for system relief (Fig. 1). If adjustment
to this valve is necessary, follow the following proce-
dure.
NOTE: Do not remove relief valve from the hydraulic
manifold for adjustment.
WARNING
Never adjust the relief valve with the hydraulic
system pressurized. Hydraulic oil may spray out
of the valve with the cap off. Personal injury may
result. Always install the cap and tighten before
pressurizing the system.
1. Locate relief valve on control manifold.
2. Loosen jam nut on relief valve to allow adjustment on
the valve.
3. To increase pressure setting, turn the adjustment
socket on the valve in a clockwise direction. A 1/8 turn
on the socket will make a measurable change in relief
pressure.
4. To decrease pressure setting, turn the adjustment
socket on the valve in a counterclockwise direction. A
1/8 turn on the socket will make a measurable change
in relief pressure.
5. Tighten jam nut on relief valve.
6. Recheck relief pressure and readjust as needed. If
adjustments to the relief valve do not change the relief
pressure, consider that the relief valve cartridge is leak-
ing or damaged.
Hydraulic Power Pack
1
2
1. Relief valve manifold
2. Relief valve
1. Relief valve cartridge
2. Jam nut
Page 6 - - 6
3
Figure 1
3. Gear pump
2
1
3
Figure 2
3. Adjustment socket
ProPass 200