Seed Hawk TOOLBAR 2010 - Manual (Page 53)

8.0 TROUBLE-SHOOTING
Seed Hawk Manual Tool Bar Page 50
SYMPTOM POSSIBLE CAUSE SOLUTION
Can not adjust shank
pressure. Incomplete engagement of
hydraulic quick couplers Inspect quick couplers to ensure
complete engagement.
Meter Wheel Switch not set to
“ON”. Ensure that both the Meter Wheel
Switch and Main Power Switch are
“ON”.
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.
Shank relief motor seized. Release set screw on collar and to
increase pressure turn clockwise and
to decrease pressure turn counter
clockwise.
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 orings 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
Shank orifice blocked. Remove cap and orifice and check to
see if contamination is block off
orifice. Clean out and reinstall.