93
for 2WD axle ..................................................... 120 bar
for 4WD axle ..................................................... 150 bar
Steering wheel turns (from one stop point to the next):
2 driving wheels .................................................... 3 1/2
4 driving wheels .................................................... 3 1/2
Diameter of steering wheel ............................ 400 mm.
Minimum turning radius
2WD tractors.
Model
5860-6060
6860
7860
8860
Without brakes
3.7 m.
4.2 m. 4.2 m.
4.4 m.
With brakes
3.35 m.
3.7 m. 3.7 m.
3.8 m.
4WD tractors.
Model
5860-6060
6860
7860
8860
Without brakes
3.9 m.
4.5 m. 4.65 m. 4.8 m.
With brakes
3.5 m.
3.85 m. 3.9 m.
4.0 m.
Technical specifications
4 WD front axle
Front axle in spheroidal cast iron turning in the center
around two supports.
Max. turning radius ................................................. 50°
Front drive engagement by means of a lever.
Transmission shaft without universal couplings on the
longitudinal axis of the tractor.
Transmission through central differential and epicyclic
final drives in the wheel hubs.
A front axle with mechanically controlled differential
lock can be supplied on request.
Transmission unit on the gearbox with infinitely
meshed gears and 29/31 reduction ratio.
Bevel gear pair reduction ratio:
Mod. 5860-6060-6860 ......................................... 40/11
Mod. 7860-8860 ................................................... 31/8
Reduction ratio of epicyclic final drives ................. 1:5.2
Total reduction ratio:
Mod. 5860-6060-6860 ................................... 1:18.909
Mod. 7860-8860 ............................................... 1:20.15
Transmission ratio between front and rear axles.
Mod. 5860-6060-6860 ........................................ 1.363
Mod. 7860-8860 .................................................. 1.381
Track adjustment
Consult the tables from page 28 to page 31 when
adjusting track widths for the 2WD and 4WD front
axles and rear axle.
Steering components
Power steering
Power steering system controlled by the steering wheel
with independent hydraulic circuit. Double-acting
control cylinder mounted on the axle assembly.
Gear pump operated by the drive shaft for oil supply.
Pump flow rate with engine at top rate:
Mod. 5860-6060-6860 ............................ 24.7 liters/min
Mod. 7860-8860 ..................................... 24.2 liters/min
Pressure limiting valve setting:
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Страница 111: ...107 Table of contents Page N Technical specifications 108 Routine maintenance 109 Ground speed table 109 7860HC 8860 HC...
Страница 126: ...122 To ensure long and efficient service from your tractor use only spare parts and lubricants recommended by...
Страница 132: ...123 To ensure long and efficient service from your tractor use only spare parts and lubricants recommended by...