Shock valve (20 MPa)
Lowering valve
Solenoid
Solenoid
Figure 8. Hydraulic lift control valve
1224
Model Code page
90. Hydraulic system
1. 8. 1998
6000--8750 910 14
8. 11. 1990
Hydraulic lift control valve Bosch
E H R --- 4
The valve is the same as on Valmet 05---tractors. The valve is
fitted on the RH side of the gearbox.The valve regulates oil
flow regardless of loading in the three---point linkage.
There are push buttons on the ends of the both solenoid
valves. Thus it is possibletomove the controlvalve mainspool
manually if, for instance, there is a malfunction of the control
valve or if it is suspected that the hydraulic system is not func-
tioning properly.
Note! Solenoid valves must not be connected direc t to the
tractor battery terminals (e.g. for testing purposes) for long
periods (max 10 seconds) since the solenoids cannot with-
stand strong current and will be damaged
Soleno ids can be changed separ ately. In addition, the shock
valve and lowering valve can be cleaned and checked and
valvespringscanbechanged.
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