79
GB 16 05 01
Fault-finding
FAULT
Boom slow/eradic.
Ram not functioning.
Hydraulic system fold/tilt
functions will not operate
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
Power supply
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 tempera-
ture.
Check output pressure of tractor hydraulics.
Minimum for sprayer is 130 bar.
Check and top up if needed.
Secure boom with S hook.
Dismantle and clean.
Check for proper 12V power supply
Check for defective switch(s).
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.
HyHy
HyHy
Hy
drdr
drdr
dr
aulic syaulic sy
aulic syaulic sy
aulic sy
stemstem
stemstem
stem
Various
Various
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