Seed Hawk TOOLBAR 2011 User Manual
Page 55
Seed Hawk Manual
Tool Bar
Page 50
SYMPTOM
POSSIBLE CAUSE
SOLUTION
Wing hydraulic
system does not
maintain pressure.
The “IN” pressure gauge
indicates less than 1200 lb
f
/in
2
(8
275 kPa).
Inspect quick couplers to ensure
complete engagement.
Check 7plex wing down value.
(only on 7plex machines. 72 feet
and up)
Remove, inspect o-rings, clean and
replace cartridge if necessary.
Wing lift cylinder piston leaking.
Remove hose from rod end of
cylinder. If oil discharges, seal is
leaking. Remove and replace seal.
Wings do not raise.
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. 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 discharges, seal is
leaking. Remove and replace seal.
Cannot maintain
packing pressure or
shanks will not stay
up in transport.
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.
SYMPTOM
POSSIBLE CAUSE
SOLUTION
Shanks do not
maintain trip/packing
pressure in hilly
terrain.
The “IN” pressure gauge
indicates less than 1200 lb
f
/in
2
(8
275 kPa).
Inspect quick couplers to ensure
complete engagement.
Excessive field operating speed.
Reduce field operating speed.
Note: Trip/packing pressure may be
momentarily increased by activating
hydraulic Circuit #1 while passing
through a shallow dip in the terrain.
Intermittent electrical power
supply to shank solenoid coil.
Ensure all electrical connections are
fully engaged and no open electrical
circuits to coil.
Shanks will not go
down under pressure
Pivot points are too tight or
seized.
Loosen up pivot points about 1/8 of a
turn. Don’t over loosen them.