Commissioning
72
ZG-
B
BAG0051.5 02.14
6.6
Adjusting the system setting screw on the hydraulic block
Always adjust the system setting
screw to the hydraulic system on your
tractor. Increased hydraulic fluid tem-
peratures are the result of an incor-
rectly adjusted system setting screw,
caused by constant strain on the trac-
tor hydraulics pressure relief valve.
Fig. 49/...
(1) System converting bolt
(2) Distance bush
(3) O-ring
(4) Cover
(5) LS connection for the load sensing control
line
Fig. 50/...
(1) Tractor connection for the load sensing
control line
(2) Tractor connection for the load sensing
pressure hose
(3) Tractor connection for the pressure-free
return flow
The tractor hydraulic system determines the
setting of the system setting screw on the hy-
draulic block (Fig. 49/1).
Depending on the tractor hydraulic system, the
system setting screw must be
screwed out
up to the stop (factory setting)
on tractors with
open-centre
hydraulic
system
(con-
stant flow system, geared pump hy-
draulics).
setting pump with adjustable oil extrac-
tion via the control unit
screwed in
up to the stop (in contrast to the
factory setting) on tractors with
closed-centre hydraulic system (con-
stant pressure system, pressure-
regulated setting pump).
load-sensing hydraulic system (pres-
sure and power-controlled setting
pump) with direct load-sensing pump
connection. Using the flow control
valve on the tractor, adjust the actual
flow rate to the required flow rate.
Fig. 49
Fig. 50