Zetor 8621 Forterra turbo, Operator'S Manual

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147
CHANGE OF WHEEL TREAD
F 212 F 213
SETTING THE FRONT WHEEL TREAD
AT NON-DRIVEN AXLE
The front wheel tread can be set to the
following values at tractors Z 8621,
Z 9621:
1425 mm
1500 mm
1800 mm
Front wheel tread setting is provided by
sliding out and in the front axle knees
when front axle is lifted. Front treads are
increased by 18 mm when front brakes
are assembled.
SETTING THE FRONT AXLE KNEES (EXTENSIONS)
First of all fix the tractor against possible movement, lift the axle by lifting jack and
support it.
- Thread out axle knee nuts and remove the screws (1).
- Loosen the lock nuts (2) at screws of steering rod bushings and remove screws
(3).
- Slide out or in the knees to the required tread, reassemble screws. Tighten axle
knee nuts by torque 130 - 140 Nm.
- Secure steering rods by screws and lock nuts in corresponding positions.
- First tighten screw (3) by torque 58 - 63 Nm with totally loosened nut up to screw
head and subsequently tighten the lock nut (2) by torque 25 - 28 Nm.
- Check for the toe-in of front wheels.
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