Change Of Rear Wheel Tread; Rear Wheel Tread Setting - Zetor 8621 Forterra turbo Operator's Manual

CHANGE OF REAR WHEEL TREAD

On the base of rear tire dimension, the
rear wheel tread can be set within the
following range:
Rear tire Wheel tread
dimension (mm)
18,4-38
480/70R38
1575-1800
520/70R38
16,9-34
16,9-38
1500-1800
18,4-34
The rear wheel tread can be set by 75
mm and is done by changing the
position of rim and disc.
CHANGE OF WHEEL TREAD
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REAR WHEEL TREAD SETTING

The rear wheel treads are adjustable by step 75 mm and are set by changing the rim
and disc position. Tread setting is done with lifted tractor rear part to enable free
turning of rear wheel.
Don't forget to block front wheels against movement before lifting.
Tighten all screws connecting the disc and rim by torque 210 - 230 Nm and nuts of
studs connecting the disc and shaft by torque 400 - 470 Nm after tread setting.
- Retighten screws to the prescribed level after each loosening the rim connection.
- Retighten connections again to the prescribed torque after driving the distance
100 m with unloaded tractor.
- Retighten connections after 3 hours with loaded tractor
- After 10 hours again check tightening of disc nuts and rim connections.
- Up to operating the first 100 hours check tightening of disc nuts and rim connec-
tions at front and rear wheels frequently (minimally 6-times within first 100 hours).
- Farther after each 100 hours recheck tightening of disc nuts and rim connections
at front and rear wheels.
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F 218