Seed Hawk 30 SERIES: 600C & 800C 2013 - Manual (Page 107)

SEED HAWK® 30 SERIES OPERATOR’S MANUAL 107
6.0 TROUBLESHOOTING
6.1 TROUBLESHOOTING NON SCT EQUIPPED TOOLBARS
SYMPTOM
POSSIBLE CAUSE
SOLUTION
Cannot adjust
shank pressure. Incomplete engagement of
hydraulic quick couplers Inspect quick couplers to ensure complete engagement.
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 adjustment 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 instructions in the
MAINTENANCE section of this Operator’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 responding to
increase and decrease of pressure
SYMPTOM
POSSIBLE CAUSE
SOLUTION
Shanks do not
maintain
trip/packing
pressure in hilly
terrain. The “IN” pressure gauge
indicates less than 1200 PSI 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.