Zetor FORTERRA HSX Series, Operator'S Manual, Page: 136 / 222

Hydraulic distributor of the outer hydraulic circuit
The control levers of the outer hydraulic circuit are distinguished by colours. The lever colour corresponds to
the colour of quick coupler dusters that are controlled by the corresponding lever.
F18N065
The outer circuit of the tractor hydraulics is controlled by the distributor with three four-position sections
controlled by levers.
The control levers of the sections are located in the cabin on the mudguard of the right rear wheel.
The numbers on the label of the control levers correspond to the numbers of the quick couplers.
The levers controlling both end sections are locked in the rear position at maximum oil flow rate into the
quick couplers 1 or 5. After overcoming the increased resistance the locked lever can be returned into the
position (N).
The quick couplers 1, 3 and 5 are equipped with the return valve - use for the connection of the working
branch of the machine with the increased requirement for tightness - minimum drop of the tools e.g. during
transport.
Description of the functions of individual positions of control levers of the hydraulic distributor
FH12N049
Always connect a single-acting cylinder to quick couplers:
1, 3, 5 of the three-section auxiliary distributor.
Always connect a double-acting cylinder to quick-couplers of one section.
Lever position Function
1 Rear (upper)
position
Pressurized oil flows to quick-couplers: 1, 3, 5
Quick-couplers connected to the return line: 2, 4, 6
2 Central position Neutral
3 Front (lower)
position
Pressurized oil flows to quick-couplers: 2, 4, 6
Quick-couplers connected to the return line: 1, 3, 5
4 Front limit position With an increased force you can shift the control levers from position (3) further
to the front to position (4), i.e. floating (free) position, where the levers are
locked. Both the quick-couplers of each section are connected to the return line
in this position.
HYDRAULIC SYSTEM
135