Operating manual
Rear disc mowers with central suspension
- with hydro-pneumatic or spring suspension
- 2 6 -
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 cutting bar 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.
Pict 10. Preparing the mower for operation.
To prepare the mower for operation:
1.
Connect the mower on the TPH of the tractor.
2.
Connect the hydraulic hoses.
3.
Open valve B on the short cylinder pos. 1 (Pict 10)
4.
Lift the mower on the lower ties of the tractor and extend the long cylinder (C) as far as
possible, and the valve A should be in pos. 2 (Pict 10), so that the mower can be unfolded
horizontally.
5.
Check the pressure on the manometer (it should be appr.100 bar) (Pict 10).
6.
Adjustment of the pressure on the ground is done by changing system pressure.
7.
In the event when pressure needs to be adjusted change valve A (Pict 10) to position 1 and
adjust pressure using the hydraulic system of the tractor:
•
increased pressure – lesser pressure on the ground,
•
decreased pressure – greater pressure on the ground.
8.
After pressure adjustement valve (A) must be changed to pos. 2 (Pict 10).
9.
When making the first few passes observe the mower in order to obtain the best setting of
the pressure of the mower on the ground.
Detail D
Detail E
