Valves For Auxiliary Hydraulics - Valtra 6000 Workshop Manual

90. Hydraulic system

Valves for auxiliary hydraulics

Valmet 6100---8100 tractors have as standard two valves for
auxiliary hydraulics, which are controlled separately with two
levers. The valves are fitted on the RH side of the tractor so that
the control levers go straight into the cab.
Both of these valves are adjustable for either single ---acting or
double ---acting function. One of these valves can be locked
mechanically in different positions and the other valve has a
"floating position".
Standard quick ---action couplings or Push ---Pull type coup-
lings are available. A leakage oil reservoir is standard.
As an extra equipment can be fitted;
a) two extra valves+brake valve for trailer
or
b) one extra valve equipped with an oil flow control
valve+brake valve for trailer.
For later tractors two extra valves+brake valve for trailer+oil
flow control valve can be fitted.
When repairing or changing the valves, they are accessible
through the hole in the cab RH side mudguard.
1. Adjustment between single/double ---action
2. Adjustment between single/double ---action
3. Position locking
Intermediate plate A and the pump side end plate B have
been attached to the valve bracket (3 pcs bolts). Tightening
torque for the bolts is 45 Nm.
Bolts C (4 pcs) through the valve block set must be tightened
evenly and crosswise to 23 Nm. Otherwise the valve spools
can get trapped. When fitting extra valves, bolts C should be
changed for longer ones.
Note! When fitting valve blocks, ensure that the o---rings be-
tween the blocks are correctly positioned in their grooves.
8. 11. 1990
Quick ---action
couplings
Figure 15. Valves for auxiliary hydraulics
Figure 16. Access hole
A
2
Figure 17. Control levers for standard valves
1230
Model Code
6000-- 8750 910
Valves
3
1
6181--- 64
Page
18
B
C