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4.2. Coupling the cultivator to the tractor
The tractor wheel tyre pressure should be in accordance with the manufacturer's
recommendations. The lower links of the three-point hitch should be at an equal height,
at a spacing corresponding to the spacing of the lower suspension points. When connecting
the cultivator to the tractor, the cultivator should stand on firm and level ground.
Fig. 6 Three-point suspension system of the tractor's three-point hitch: 1,2 - lower links, 3 - upper fastener,
4 - left suspension, 5 - right suspension with adjustable length, 6 - lift arm, 7 - lift shaft
When attaching the cultivator to the tractor's three-point hitch, perform the following
steps:
• switch the tractor's hydraulic system to position control,
• remove the lower hitch bolts (in case the tractor linkage is not equipped with
hitching hooks),
• drive up carefully, suspend the machine from the lower links, then secure,
• connect the top upper fastener on the tractor. During operation of the unit, the
hitch point of the upper fastener at the unit must be higher than the attachment
point of this fastener at the tractor,
• check the lifting and lowering of the cultivator and the operation of the hydraulic
system.
Any tractor that is used with the machine must be equipped with a set of weights
and must remain steerable during transport, i.e. a minimum of 20% of the tractor's
weight must be on the front axle.
NOTE! Hitching the tractor to the cultivator must be done carefully, at
minimum tractor speed! When hitching the machine, make sure there are
no bystanders in the vicinity.
4.3. Operation and adjustment
The working depth is adjusted by changing the height of the shaft relative to the
cultivator frame. This is done by inserting pins into a drilled plate fixed to the frame,
together with stabilising plates (Figure 7) and adjusting the tractor's hydraulic lift.
16
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