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HZ hydraulic block
The hydraulic flow can be adjusted on the HZ hydraulic block if
necessary. First set the hydraulic flow on the tractor so the boom raises
and lowers at the desired speed. Then check the speed of the fold and
tilt functions. If adjustment is necessary, loosen jam nut (A) and turn
throttle valve (B) all the way in using an allen wrench. Then turn throttle
valve (B) back out 1-1/2 turns. If the fold and tilt functions are too slow,
turn throttle valve (B) out more. If the fold and tilt functions are too fast,
turn throttle valve (B) in more. Tighten jam nut (A) when the desired
speed is reached.
Open center hydraulics (trailed - optional equipment)
The open center hydraulic block is needed if the tractor uses open
center hydraulics and/or if load sensing will be used.
The valve (1) on the side of the block is factory set for open center
hydraulics, but if closed center hydraulics will be used (also in
combination with load sensing) then screw in the valve.
Certain tractor models are able to use Load Sensing without connecting
an external sensing line. But if optimal sensing control pressure cannot
be obtained, an external sensing line needs to be mounted (3). Please
consult your tractor dealer for correct setup and correct connection.
Before operating the hydraulics, the valve should be adjusted according
to the specific tractor model. If you have doubt about which type of
hydraulic system your tractor is equipped with, please consult your
tractor dealer.
List of setting combinations for flow element and circuit value:
Valve no.
1
2
Open center
out
out
Closed center
in
in
Load sensing (LS) in
out*
*if tractor requires pressure relief.
±
WARNING! Always be sure to fully extract or retract the open/closed center selection valve (1). Failure to do so can
result in damages to vital pump parts.
±
WARNING! It is of essential importance that connectors on sensing line are kept totally clean. Failure to do so can
result in impurities entering the pump and thereby cause damages to vital pump parts.
3 (LS port)
Not conn.
Not conn.
Connected
4 - Sprayer setup
A
B
4.3
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