Seed-hawk TOOLBAR 2008 Manuel d'utilisateur télécharger pdf (Page 60)

TROUBLE-SHOOTING

SYMPTOM

POSSIBLE CAUSE

SOLUTION

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 open wire in harness

to solenoid coil.

No electrical power to shank

pressure adjustment motor.

Check for open wire to shank

pressure adjustment motor.

Shank relief motor seized. Manually rotate motor coupler

using pliers or vice-grip until

motor turns freely.

Tractor hydraulic selector valve

not holding pressure.

Disconnect coupler at Circuit #1.

If pressure is now adjustable,

repair the tractor selector valve.

Solenoid coil malfunctioning. Activate solenoid valve manual

override. If the shank pressure

responds properly, replace the

coil.

Solenoid valve cartridge

contaminated.

Remove solenoid valve cartridge

per repair instructions in the

MAINTENANCE section of this

Operator’s Manual, inspect,

clean and replace.

Shank relief valve cartridge

contaminated.

Remove relief valve cartridge

per repair instructions in the

MAINTENANCE section of this

Operator’s Manual, inspect,

clean and replace.

Shank cylinder seal leaking. Remove and replace shank

cylinder seal per repair

instructions in the

MAINTENANCE section of this

Operator’s Manual.

Shank pressure gauge

malfunctioning.

Remove and replace pressure

gauge.

Can not adjust shank pressure.

Shank orifice blocked. Remove cap and orifice. Clear

contamination from orifice and

replace orifice and cap.

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Seed-hawk TOOLBAR 2008 Manuel d'utilisateur Page 60

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