GENERAL DESCRIPTION
E-68 unit is an electrically powered and electrically
controlled hydraulic mechanism specifically designed
for use with Meyer Snow Plows. The E-68 raises and
lowers the plow with an integral 8" stroke hydraulic
cylinder. The E-68 will also mount and dismount the
Xpress plow system from the vehicle using a hydraulic
Mount/Dismount Cylinder.
In addition to raising and lowering the plow
hydraulically, the E-68 angles the plow hydraulically,
left and right, via remote hydraulic cylinders.
The Electro Lift®unit consists of a specially designed
high torque 12-volt DC motor which is directly coupled
to a gear-type hydraulic pump. The pump obtains its
supply of hydraulic fluid from an integral reservoir which
totally surrounds the integral hydraulic cylinder which
raises and lowers the plow.
The E-68 includes an integral valve body which contains
five electrically controlled solenoid valve cartridges.
Solenoid valve cartridge “A” which is energized to allow
the plow to lower by gravity. Solenoid valve cartridge
“B” is energized to route the pressurized hydraulic fluid
to the integral hydraulic cylinder to raise the plow.
Solenoid valve cartridge “C” is energized to route the
pressurized hydraulic fluid to the left remote hydraulic
cylinder to angle the plow to the right. Solenoid valve
cartridge “D” is energized to route the pressurized
hydraulic fluid to the right remote hydraulic cylinder
to angle the plow to the left. Solenoid valve cartridge
“E” is energized to route the pressurized hydraulic
fluid to extend the mount/dismount hydraulic
cylinder to remove the plow from the vehicle.
Mounting the plow to the vehicle only requires
energizing the electric motor since the normal route
for the pressurized hydraulic fluid is to retract the
mount hydraulic cylinder.
Additional components which control and supply
electrical current to the E-68 units are an operator
controlled Pistol Grip; a solenoid switch to supply high
amperage current to the unit’s motor (motor solenoid);
valve cartridge(s); and short heavy gauge cables to
distribute high amperage current directly from the
positive terminal of the vehicle’s battery and ground
the unit directly to the negative terminal of the vehicle’s
battery.
THEORY OF OPERATION
FUNCTIONS
The E-68’s six basic functions performed are:
• Raise snow plow
• Lower snow plow
• Angle snow plow to right
• Angle snow plow to left
• Mount Xpress Snow Plow System
• Dis-mount Xpress Snow Plow System
Refer to Figures 1-1 through 1-6 (pages 6 thru 11)
for electrical and hydraulic flow chart for each
function. Each figure explains which component is
actuated and related in each function.
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