Seed Hawk 30 SERIES 2015 - Manual (Page 89)

SEED HAWK ® 2015 30 SERIES OPERATOR’S MANUAL – DOMESTIC 84
Wing hydraulic system does not maintain pressure
Shanks will not go down under pressure
Probable Cause Solution
Pivot points are too tight
or seized. Loosen up pivot points about 1/8 of a turn. Don’t
over loosen them.
Probable Cause Solution
The “IN” pressure gauge
indicates less than 1200 psi. Inspect quick couplers to ensure complete en-
gagement.
Check 7-plex wing down
value (only on 7-plex ma-
chines (72 ft. and up)).
Remove, inspect o-rings, clean and replace car-
tridge if necessary.
Wing lift cylinder piston
leaking. Remove hose from rod end of cylinder. If oil dis-
charges, seal is leaking. Remove and replace seal.
Cannot maintain packing pressure or shanks will not
stay up in transport.
Probable Cause Solution
Seal damaged in shank
cylinder. Check o-rings on
meter engage valve also
make sure meter engage
switch is shut off.
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.
Wings do not rise
Probable Cause Solution
The “IN” pressure gauge
indicates less than 1200
psi for smaller implements
and less than 2100 psi for
larger implements.
Inspect quick couplers to ensure complete en-
gagement. Check to see that the circuit is putting
out enough pressure.
Wing cylinder piston seal
leaking. Remove hose from rod end of cylinder. If oil dis-
charges, seal is leaking. Remove and replace seal.