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4. STONE TRIP SYSTEMS
Adjustment:
Connect the filling hose for the stone trip system as described in the preceding
ADJUSTMENT OF OPERATING PRESSURE, and depressurize the system.
Remove the piston rod from inner hole and relocate it in to the outer hole, this increases the
leverage, which results in a 20% increase of the resistance.
CHECKING THE ACCUMULATOR
The plough must be mounted to the tractor!
The accumulator precharge pressure should be checked at regular intervals (yearly) with
the help of the pressure gauge.
Connect the filling hose as described in “ADJUSTMENT OF OPERATING PRESSURE”, set
the control lever on the tractor to the open return position and open the shut-off valve slightly.
The working pressure will now drop slowly to a specific value and then fall rapidly to zero.
The pressure shown by the gauge at which the rapid drop occurs is the accumulator
precharge pressure.
In a similar manner, the precharge pressure can be checked when filling. In this case, the
reading will rise rapidly from 0 to a specific value, after which it will increase slowly. The
pressure gauge reading at the end of the rapid rise in pressure is the accumulator precharge
pressure.
SUMMARY: The pressure at which the gauge reading drops quickly when emptying
the system and at which the reading stops rising quickly when filling the system, is
the accumulator precharge pressure.
Should the pressure fall by more than 2 MPa (20 bar) below the precharge pressure specified
on the accumulator, contact your local Kongskilde dealer for advice.
Never tamper with the gas filling valve. Never attempt to disconnect a
hydraulic connection while the system is pressureized.
The plough must be mounted to the tractor.
Normal release
resistance
20 % higher release
resistance
