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HYDRAULIC SYSTEM
from Zetor Tractor Forterra 100 Forterra 110 Forterra 120 Forterra 130 Forterra 140 Operator’s Manual
Type of work: On level ground
Max. oil consumption: 12 litres
Gearbox filling: standard
Type of work: On a slope
Max. oil consumption: 12 litres
Gearbox filling: transmission oil filling increased by 7 litres
Type of work: On level ground
Max. oil consumption: 27 litres
Gearbox filling: transmission oil filling increased by 15 litres, maximum permissible oil quantity in the gearbox
Type of work: On a slope
Max. oil consumption: 20 litres
Gearbox filling: transmission oil filling increased by 15 litres, maximum permissible oil quantity in the gearbox
Type of work: On level ground
Max. oil consumption: 8 litres
Gearbox filling: minimum permissible oil quantity in the gearbox
Hydraulic Distributor Of The Outer Hydraulic Circuit
A three-section or two-section distributor with four-position sections may be installed in the tractor. The control levers of the sections are installed in the cab on the fender of the right rear wheel. The first (right) section of the distributor is equipped with locking in pressure positions with hydraulic securing. In the case of the two-section and three-section distributor it is the section controlling quick-couplers “1” and “2”. Outlet “4” of the two-section distributor and “4” and “6” of the three-section one is additionally equipped with a check valve - used for the connection of a working branch of the machine with an increased requirement for leakproofness - minimum lowering of the implement e.g. during transport.
DESCRIPTION OF THE FUNCTIONS OF INDIVIDUAL POSITIONS OF CONTROL LEVERS OF THE HYDRAULIC DISTRIBUTOR
Lever position Function
1 Rear (upper) position Pressurized oil flows to quick-couplers: “2“, "4", "6"
Quick-couplers connected to the return line: “1“, “3“, “5“
2 Central position Neutral
3 Front (lower) position Pressurized oil flows to quick-couplers: "1", "3", "5"
4 Front limit position
Quick-couplers connected to the return line: “2“, “4“, “6“
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.
Note: The lever automatically returns from positions (1) and (3) to the neutral. Not applicable to the section with the kick-out function.
Always connect a single-acting cylinder to quick couplers
“2”, “4” ofthe two-section auxiliary distributor and
“2”, “4”, “6” of the three-section auxiliary distributor.
Always connect a double-acting cylinder to quick-couplers of one section.
Rear Outlets Of The Outer Hydraulic Circuit
In the tractor version that is not equipped with the front outlets or the front threepoint hitch and that is equipped with a -a three-section distributor the rear outlets are terminated with pressure quick-couplers "1" to "6". b -a two-section distributor the rear outlets are terminated with pressure quick-couplers "1" to "4".
The third quick-coupler marked “0” is directly connected to the final drive housing and is designed for return oil from external hydraulic implements (e.g. from rotational hydraulic motors, etc.).
Front Outlets Of The Outer Hydraulic Circuit
They are installed on a panel in the right front part of the tractor. Their installation is bound to a three-section distributor. They are designed for the control of frontally attached adapters. The marking of the outlets and their use is the same as in the case of the rear outer outlets.