Operating manual
Rear disc mower with central suspension
- hydro-pneumatic or spring suspension
- 2 8 -
NOTE:
Too low a pressure in suspension disables the machine to be set in transport position. If
locking pawl does not catch when mower is being switched to transport position, then
increase pressure in suspension.
NOTICE:
Improperly relieved cutting unit of the mower will cause increase of cutterbar pressure on
the ground which will lead to faster wear of sliding skids, overload of cutterbar, higher fuel
consumption, damage to the stubble and contamination of the fodder.
5.2.1. Gas pressure in the accumulator and in the entire system for each mower model
The table below shows the optimal values of pressure in gas accumulators and in the entire
system for each mower model. The system pressure can be read on the manometer.
Tab. 13. Gas pressure in the accumulators and in the entire system for each mower model
Gas pressure in the accumulator
[bar]
System pressure (manometer reading)
[bar]
KT 261 H
35 65
KT 260 H
KT 261 S H 60 80
KT 260 W H 65 90
KT 301 H
45 80
KT 300 H
KT 301 S H 65 90
KT 300 W H 65 90
KT 301 SL H 60 80
KT 341 H
55 85
KT 340 H
5.3. Preparing mower for operation – mower with spring suspension
After the cutterbar has been lowered on the ground turn on the mower’s power supply. As the
mower is at work site and has been set in working position do the following:
Lower the cutterbar so it touches the ground,
Connect the PTO shaft end to the tractor’s PTO rpm (if one end was disconnected) or connect
both ends of the shaft,
Make sure that the space where the mower is to be opened is unobstructed and there are no
persons around,
Pull the line enough to release the locking lever Z (Fig. 15) and engage the external hydraulic
valve on the tractor and the hydraulic hoist of the tractor to set the cutterbar in a horizontal
position,
Using the lever of the tractor’s external hydraulics lower the cutterbar so that when it gets
closer to the ground it slows down,
Release the coping tie (Fig. 17),
NOTE: The best recommended cutterbar’s inclination angle to the ground is between 0° and 5°.
The inclination is the result of either shortening or lengthening the adjustable tie G (Fig. 12).
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