KUHN GMD802 Series, Operator'S Manual

Page: 45 / 72

Instructions for work
Disc mower
GMD802
43
Pressure adjustment
Increase pressure in the hydro-pneumatic accumulator:
- Place the machine in transport position.
- Open the hydraulic valve using the 18 box spanner
supplied with the machine. (Position (a)).
- Activate the transport/work cylinder control valve in
the "lift into headland turn" position.
- Check the pressure increase indication on the gauge.
- When the required pressure is reached, close the
valve. Position (b).
Reduce pressure in the hydro-pneumatic accumulator:
- Stop the tractor engine.
- Open the valve using 18 box spanner supplied with
the machine.
- Activate the headland turn cylinder control valve in the
"lower into work" position.
- Check the pressure decrease indication on the gauge.
When the required pressure is reached, close the valve.
Position (b).
The following adjustments do not cause the
machine to move.
Position (a): Circuit open (Adjustment)
Position (b): Circuit closed (Work and transport)
The valve must only be in open position for
pressure adjustments.