Gregoire Besson SP9 COMPACT, Instruction Of Utilization And Maintenance

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Operation manual SP 9 - Compact
CHAPTER IX – FIELD SETTINGS – Page 1
3
9.6.7.5
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ADJUSTMENT WHEN YOU ARE ALONE IN THE FIELD
When only the tractor operator is working it may be too long to hit the security hydraulic circuit
pressure You should go forward and back in the driver cabin between the controlling lever and circuit
breaker (37). At that time the following simple mode should be applied:
A. Look at the pressure on the manometer compared with the actual one, required pressure
value (+ bigger – smaller).
B. Open the cock (37),
C. Go into the driver cabin and alter the rear beam lifting lever to let more oil to enter the circuit.
Be sure that the manometer shows higher value of the pressure.
D. Close the cock, in hydraulic circuit there is still more oil. (37).
E.
Go back to the driver cabin and put hydraulic directing levers into „self-adjustable” position,
F. Carefully open the cock (37) for the oil overflow go back into the tractor.
G. Quickly close the cock (37) the indicator of the manometer (38) during the pressure reduction
reaches the new required value.
ATTENTION : Do not increase the accumulator pressure above the possible used values.
The too big pressure in the hydraulic circuit prevents the operation of the securities. The gas
(nitrogen) would be totally presses because of the hydraulic pressure. As the accumulator is full with
oil it would not be the buffer and could not absorb the oil coming from the securities..
The nitrogen compress pressure in the
accumulator
Oil pressure set values seen on the manometer
70 bar 80 - 120 bar
100 bar 110 - 150 bar
150 bar 160 - 200 bar
100 bars 110 à 150 bars
150 bars 160 à 200 bars
ATTENTION:
The hydraulic Non Stop security works as element: The
upper plough part and the bottom plough part turn up at the same time.
Nobody must stay in the zone of security disengagement.
Do every precaution described in the chapter 2 especially about the pressure in the hydraulic circuits.