LOWLANDER HD MK2 & WIDEBODY MANURE SPREADER – INSTRUCTION & SPARES MANUAL
Page 35
3.3 FLOOR DRIVE RELIEF VALVES
This valve is cross line type and is fitted to the hydraulic motor on the floor drive gearbox. The pressure can
be varied to suit the material being spread. To adjust, engage the oil flow via the spool valve on the tractor,
insert the Allen key to prevent the screw from rotating whilst slacking off the lock nut. Using the Allen key,
turn the screw clockwise to increase pressure until the floor starts to move. Use the Allen key to prevent
rotation of screw and retighten the lock nut.
To decrease the pressure, reverse the procedure. When making this adjustment, the spreader pressure
should be set lower than the tractor PRV (Pressure Relief Valve).
To adjust relief valve pressure
No.1
Cartridge contols movement of floor to rear. To increase pressure release locknut turn screw clockwise and
retighten locknut.
To decrease pressure turn screw anticlockwise.
No.2
Cartridge controls movement of floor to front. To increase pressure release locknut turn screw clockwise
and retighen locknut.
To decrease pressure turn screw anticlockwise.
NOTE
Maximum protection can be given to moving parts by keeping relief valve pressure set to a minimum.
The factory set pressure for the valve is 2000 PSI (138 bar).
DO NOT REVERSE THE MOVING FLOOR WHEN A PLASTIC FLOOR IS FITTED.
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