PONSSE H73 - Pressure Adjustment: Front Delimbing Knife Cylinder

Service training
000
04052000
7.5
24
27
1. Disconnect the electric cable from the harvester head.
2. Connect a pressure gauge to the measurement connector.
3. Start the engine and set the constant pressure:
- engage the working brake and constant rpms
- turn on the harvester head main switch
4. Open the lock and adjust the pressure reducer valve by turning adjustment
screw no. 24 to obtain 120 bar / 1740 psi. (120-140 bar / 1740-2031 psi.).
5. Open the lock and turn adjustment screw 27 clockwise (no oil flow), then
turn adjustment screw 27 counterclockwise until the sound of oil flowing can
be heard. Turn the adjustment screw clockwise until the sound of oil flowing
stops. The pressure relief valve is now at 120 bar / 1740 psi. (120-140 bar /
1740-2031 psi.).
6. Adjust the pressure reducer valve by turning adjustment screw no. 24 to
obtain 50 bar / 725 psi. (50-70 bar / 725-1015 psi).
7. Lock the adjustment screw and connect the electric cable.
Pressure adjustments
Front delimbing knife cylinder pressure
adjustment