Seed Hawk TOOLBAR 2008 - Manual (Page 61)

TROUBLE-SHOOTING
SYMPTOM POSSIBLE CAUSE SOLUTION
The “IN” pressure gauge
indicates less than 1200 lb
f
/in
2
(8 275 kPa).
Inspect quick couplers to ensure
complete engagement.
Wing solenoid valve cartridge
contaminated. Remove, inspect, clean and
replace cartridge.
Wing orifice blocked. Remove cap and orifice. Clear
contamination from orifice and
replace orifice and cap.
Wing hydraulic system does not
maintain pressure.
Wing lift cylinder piston leaking. Remove hose from rod end of
cylinder. If oil discharges, seal is
leaking. Remove and replace
seal.
The “IN” pressure gauge
indicates less than 1200 lb
f
/in 2
(8 275 kPa) for smaller
implements and less than 2100
lb
f
/in
2
(14.50 kPa) for larger
implements.
Inspect quick couplers to ensure
complete engagement.
Wing lift / auger check valve
contaminated (5-station valve
block only). Remove, inspect, clean and
replace wing lift/auger check
valve cartridge.
Weight of wings exceeds
hydraulic lift capacity. Exchange wing lift cylinders for
those of higher lift capacity or
contact tractor dealer to adjust
tractor hydraulic pressure.
Wings do not raise.
Wing cylinder piston seal
leaking. Remove hose from rod end of
cylinder. If oil discharges, seal is
leaking. Remove and replace
seal.
Can not maintain packing
pressure or shanks will not stay
up in transport. Seal damaged in shank cylinder. Pressure shanks up and keep
locked on. Undo main bridle
hoses on the rod end of cylinder
on both ports. If oil is flowing
out of a hose, then it is that rank
on that wing that has a seal
leak. Move down that rank,
undoing the hoses on the rod
end of each cylinder. When the
oil quits flowing, it is the
previous cylinder with the faulty
seal. Replace cylinder seal(s)
and repeat process in case of
more than one faulty seal.
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