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Groundsmaster 5900/5910Hydraulic System Page 4 -- 60
Adjustments
Adjustable Pressure Valve
The mow/transport and lift control manifolds include ad-
justable pressure valves. An adjustment may be re-
quired to these valves if testing determines that the
circuit pressure setting is incorrect (seeTESTING in this
chapter). Use the following process if an adjustment is
required:
NOTE: Do not remove the valve from the hydraulic
manifold for adjustment.
IMPORTANT: Donotremovecapfrom valve ormake
valve adjustment when engineis running.Hydraulic
oil under pressure may be ejected from valve with-
out cap in place.
1. Make sure that engine is not running. Remove cap
from hydraulic valve with an allen wrench.
2. 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 pres-
sure.
3. 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 pressure.
4. Install cap on valve.
5. Recheck valve pressure using correct test proce-
dure and readjust if needed.
Figure 44
1. Hydraulic valve
2. Valve cap
3. Adjustment socket
2
3
1