Problem
Probable Cause(s)
Suggested Remedy
Plow will not lift. Pump works properly.
Coils on the manifold may be damaged.
Remove the S6 coil from the cartridge valve. Position a
(Continued from page 37.)
screwdriver inside of the coil and push the draw latch
connect/disconnect toggle switch upward. The screw-
driver should be magnetically drawn to the coil. Replace
the coil if there is no action.
Plow will not lift with magnification to the
Hydraulic lock in the manifold. This occurs if the voltage is
Loosen cartridge valve S6 to relieve pressure and re-
S6 coil.
too low on the coils – should be 10 volts.
tighten. DO NOT OVERTIGHTEN! Valves should be
torqued to a maximum of 24 ft. lbs.
Solenoid cartridge valve may be contaminated.
Remove any foreign objects that may be obstructing
proper valve operation. Replace if not operating properly
after cleaning.
Plow will not stay angled when plowing.
The angle pressure relief valve is set too low.
Check the pressure relief by testing the valve inline with
NOTE: Increasing the pressure relief valve will cause
the cylinder. Attach a tee fitting to the angle cylinder
damage to your plow. Do not set the pressure relief
hydraulic adapter and connect the hose and pressure
greater than 3000 PSI (See illustration on page 39.).
gauge to the tee. Push the plow against a solid object
and record the pressure reading. Note: The setting should
not exceed 3000 PSI.
Plow will not angle, pump works.
Review all probable causes above.
NOTE: Verify solenoids S3 & S4 for angle functions.
Wing will not stay angled when plowing.
The angle pressure relief valve is set too low.
Test the wing pressure relief. Attach a fluid PSI gauge to
Note: Increasing the pressure relief valve will cause
the quick connect fitting on the manifold. The pressure
damage to your plow. Do not set the pressure relief
relief should not be greater than 2650 PSI. Review the
greater than 2650 PSI.
illustration on page 39 to increase the pressure relief
settings.
Wing will not move, pump works.
Control station, wire harness or cables may be loose
Verify control station, wire harness and all cables are
or improperly connected.
securely connected. Clean if necessary.
Hydraulic lock in the manifold has occurred.
Loosen cartridge valves S9 & S10 or S1 & S2 to relieve
pressure and retighten. DO NOT OVERTIGHTEN! Valves
should be torqued to a maximum of 24 ft. lbs.
No power to the coils.
Verify coils S1 & S2 (pass. side slide box retract and
extend) and S9 & S10 (drive. side slide box retract and
extend) are grounded, connected properly and receiving
power. If no power is available, diagnose the wire harness.
Review the plow wire harness schematic on page 31 and
the vehicle wire schematic on pages 33 & 35. If power is
present, review the next step.
Coils are receiving power.
Verify that the coils are magnetizing. Position a screwdriver
inside of the coil. When the respective function is activated,
the screwdriver is drawn to the side of the coil. If the coil is
not drawn to the screwdriver, replace the coil. If power is
present, review the next step.
Solenoid cartridge may be contaminated or damaged.
Determine a damaged cartridge valve by reversing the
A bent cartridge will not allow the valve to move freely
driver’s side and passenger’s side cartridge valves.
inside of the cartridge.
Replace valve if necessary.
Plow lowers too slow.
Variable flow control valve is not adjusted properly.
Turn flow control valve counterclockwise in small incre-
(See illustration on page 39)
ments and test. NOTE: Never make adjustments when
the plow is in the raised position! Fluid pressure will make
the valve difficult to adjust and serious injury or death can
occur from a falling plow.
38
Troubleshooting Guide (2 of 3)
Содержание Power Plow 8611
Страница 19: ...Notes 17 Notes...
