Zetor FORTERRA HSX Series, Operator'S Manual, Page: 155 / 222

Front wheels track of front drive axle in tractors equipped with non-removable discs
Secure the tractor against motion first, heave the axle by a heaver and support. Tighten the nut
of front wheels at a torque of 250 - 290 Nm.
The change of wheel tracks is done by turning the wheel and mounting with rim offset to the inside, while the
wheels are interchanged to keep the right direction of the tyre pattern with arrow to the front.
- Demount front wheels.
- Interchange the front wheels and mount with rim offset to the inside.
- Nuts tightening front wheels to be tightened at a torque of 250 - 290 Nm.
- After travelling the distance of 100 m with an unloaded tractor, tighten the nuts tightening the front wheels
again to the prescribed torque.
- After loading the tractor, tighten the nuts tightening the front wheels after 3 Mh.
- After 10 Mh, retest the tightening of nuts fixing the front wheels.
Toe-in of the wheels of the front driving axle
Disc wheel
ET (mm)
Front wheel tracks in mm
12,4R24 56 1688 1932
13,6R24
340/85R24
380/70R24 51 1698 1922
14,9-24
420/70R24
480/65R24
14,9R24
380/85R24
15 1770 1850
320/85R24 -19 1838 1782
13,6R24
340/85R24
14,9R24
380/85R24
380/70R24
-24 1848 1772
Proper toe-in or toe-out (S) of front wheels in a tractor with
front drive axle is measured on wheels´ rim
Toe-in or toe-out is determined by the difference of
measured values.
Tractors with solid front drive axle
b = a + 0 to 2 mm
Tractors with suspension front drive axle
S value changes with height setting of front part of the
tractor (see DRIVING OPERATION chapter).
Front part of tractor in the highest position
b = a - 3.3 to 4.2 mm
Front part of tractor in the medium position
b = a + 0.3 mm
Front part of tractor in the lowest position
b = a + 2.2 to 2.8 mm
F_02_189
WHEEL TRACK CHANG
154