BUNNING LoPro 670, Owner'S Manual

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LOPRO 670 & 780 MANURE SPREADER – INSTRUCTION & SPARES MANUAL
Page
23
FLOOR DRIVE RELIEF VALVES
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 at 2000 PSI.
This valve is cross line type and 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. Use the Allen key, turn the screw
clockwise to increase pressure until the
floor starts to move. Use the Allen key to
prevent rotation of the screw and retighten
the lock nut.
To decrease the pressure, reverse
procedure. When making this adjustment,
the spreader pressure should be set lower
than the tractor PRV.