Seed Hawk 30 SERIES 2014 - Manual (Page 89)

SEED HAWK ® 2014 30 SERIES OPERATOR’S MANUAL – DOMESTIC 83
7.0 Troubleshooting
Probable Cause Solution
Incomplete engagement of
hydraulic quick couplers. Inspect quick couplers to ensure complete en-
gagement.
Lock valves for shanks are
set in closed position.
Ensure that both lock valves, one at the manifold
and one at the tractor quick coupler, are set to
the open position.
No electrical power to
shank solenoid valve. Check for broken wire in harness to solenoid
coil.
No electrical power to
shank pressure adjustment
motor.
Check for broken wire to shank pressure adjust-
ment motor.
Tractor hydraulic selector
valve not holding pressure.
Disconnect coupler at Circuit #1. If pressure is
now adjustable, repair the tractor selector valve
(make sure the lever is in working position not
float).
Solenoid coil
malfunctioning.
Activate solenoid valve manual override. If the
shank pressure responds properly, replace the
coil also check for power going to coil.
Shank solenoid valve
cartridge contaminated.
Remove solenoid valve cartridge per repair in-
structions in the Maintenance Section of this Op-
erator’s Manual, inspect to make sure all o-rings
are not damaged, then clean and replace.
Shank pressure gauge
malfunctioning. Remove and replace pressure gauge if not re-
sponding to increase and decrease of pressure.
Cannot Adjust Shank Pressure
Shanks do not maintain trip/packing pressure on hilly
terrain
Probable Cause Solution
The “IN” pressure gauge
indicates less than 1200 psi. Inspect quick couplers to ensure complete en-
gagement.
Excessive field operating
speed.
Reduce field operating speed. Note: Trip/packing
pressure may be momentarily increased by acti-
vating 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.