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Fig. 15 SPEC HD cultivator equipped with a transport trolley (optional).
Regular control of wheel pressure.
If there is a significant loss of air from the tyres,
check the air valve for leaks. Next, take the wheel to a specialised workshop to locate
and repair the damage. Significantly damaged tyres (particularly profile damage) must be
replaced immediately.
Setting of wheel bearing axial clearance.
It is recommended that this operation is carried out by a specialised company. Performed
by tightening the nut on the wheel hub after the wheels have been removed. The
recommended clearance is 0.12-0.15 mm. Inspection and adjustment should take place
every 2 years.
Procedure :
•
Removal of the hub cover and the spring pin securing the spring nut.
•
At the same time, while turning the hub, press down and tighten the crown nut.
•
Tightening is complete when no more than half a turn of the hub is caused by
vigorous hand rotation.
•
Partially loosen the nut until the hub rotates freely and repeat the tightening.
•
After repeated rotation locking, loosen the nut by 30º max. until the immediate
nut locking with the pin is possible. Mark the position with a line.
•
From the marked position, unscrew the nut by half a turn and, with a gentle tap,
press the hub against the nut as far as it will go.
•
Tighten the nut to the position marked with the line.
•
Fit the hub cover.
NOTE! During maintenance work, the unit should be secured against rolling
(it should be connected to the tractor with the parking brake on) and
unfolded.
Adjustment hydraulic
of the transport trolley
Transport trolley
Rear light beam