Vaderstad NZ Aggressive NZA 600 Series, Original Instructions Manual

Page: 42 / 50

Maintenance and service
42 11.07.2011
ver. 2
4.11 Bleeding the hydraulic system for the Crossboard
To bleed the hydraulic system it is not necessary to unscrew any couplings. You quite simply use
the tractor's hydraulic system.
A Lower the cultivator to the working position.
B Press out the rams. Keep the tractor's hydraulic lever in this position so that the fluid continues
to be pressed out into the rams (about 1-2 minutes). When the first ram has been filled with
fluid, the fluid is pressed further via an overbleed valve to the other ram, which is then filled
with fluid The fluid is then pressed further to the third ram, and so on.
NOTE! Do not use the float position of the tractor's double-acting hydraulic system. If the float po-
sition is used, air could be sucked into the cultivator's hydraulic system
Make a habit of bleeding the hydraulic system each time the cultivator is hitched to the tractor be-
fore you start using it, and also a few times during the day when you are using the cultivator.
Bleeding the system takes only 10-15 seconds.