Hydraulic System - I.a.h - Hardi NAVIGATOR 3000 Instruction Book

Hydraulic system - I.A.H.

FAULT
Boom slow/erratic.
Ram not functioning.
Hydraulic system fold/tilt functions will not operate. Power supply.
One function (fold or tilt) will not operate.
Multiple hydraulic functions with one switch
activated.
PROBABLE CAUSE
Air in system.
Regulation valve incorrectly set.
Insufficient hydraulic pressure.
Insufficient amount of oil in tractor reservoir.
Restrictor or regulation valve blocked.
Various.
Various.
7 - Fault finding
CONTROL/REMEDY
Loosen ram connection and activate hydraulics until
oil flow has no air in it (not whitish).
Open or close until desired speed is achieved
(clockwise = less speed).
Remember oil must be at operating temperature.
Check output pressure of tractor hydraulics. Minimum
for sprayer is 2500 psi (170 bar).
Check and top if needed.
Secure boom. Dismantle and clean.
Check for proper 12V power supply.
Check for defective switch(es).
Check continuity of cables.
Check for operation of applicable solenoid (coil not
activating or plunger stuck).
Check for short circuit in wiring junction box at rear of
sprayer.
Dirt in the restrictor port of the cylinder.
Check for correct solenoid electric/hydraulic hook-up.
Check for short circuit in wiring in the junction box at
rear of sprayer.
7.3