Operating manual
Rear disc mowers with central suspension
- with hydro-pneumatic or spring suspension
- 2 6 -
2.
The mower should be connected to the tractor using the three point hitch (TPH), as shown on
Fig. 9. The hangers W of the lower ties of the tractor should be placed under the bolts A
(Fig. 9) of the suspension frame of the mower. The chain Ł is placed on the bolt of the upper tie
in order to protect the mower from falling of the hangers W. After connecting the mower its
position should be adjusted on level ground using the upper regulated tie G and the hangers W
of the lower ties of the tractor (Fig. 9). Connect the hydraulic hoses of the mower into
the hydraulic receptacle of the single-section tractor.
3.
After connecting the mower to the tractor check the lengthwise balance and steering ability of
the tractor-mower unit. In order to achieve this entire unit must be weighed first, then drive
onto the scale only with the front axle of the tractor (the mower must be in the transport
position, lifted up). If the weight of the front axle of the tractor is at least 20% of the entire
weight of the unit then steering ability has been preserved. If this is not the case the front axle
should be additionally weighed down.
Fig. 9. The mower connected to the tractor
5.2.
Connecting the articulated telescopic shaft (ATS)
The shaft should be connected with the unidirectional clutch side toward the mower.
The cover should be secured so that it does not spin by securing the holding chains to
a permanent part of the body of the tractor and the loop on the guard of the splined shaft of the
mower drive shaft.
5.3.
Preparing the mower for operation – mowers with hydro – pneumatic suspension
The power to the mower should be turned on after the cutting assembly is lowered to
the ground. When at the work site and placing the mower in operating position:
lower the cutting assembly until it touches the ground,
connect the articulated telescopic shaft end onto the PTO of the tractor (if one end was
disconnected) or connect both ends of the shaft,
the best recommended tilt angle of the cutterbar to the ground is from 0° to 5°. The tilt is
the result of the shortening or lengthening of the regulated tie. The same applies to mowers
equipped with a scarifier or rollers,
slowly turn on the power to the mower bringing the cutting discs to the nominal rotational
speed of the PTO of 950 - 1000 rpm. The rpm's should be as low as possible to decrease tractor
fuel consumption,
put the tractor into correct gear and drive into the grass to be mowed. Level pastures can be
mowed at any speed, while on uneven ones the speed should be reduced to a safe speed.
G
S
W
A
