“C” Solenoid Valve E-88 only
The “C” Cartridge contains a spool valve when in the
energized position, the pressurized hydraulic fluid is
diverted to the left power angling cylinder, angling the
plow to the right. Also, the hydraulic fluid being forced
from the retracting right power angling cylinder flows
through the “D” Cartridge when de-energized back
to the reservoir.
“C” Solenoid Valve E-58H & E-78 only
The “C” Solenoid valve is used on the E-58H &
E-78 hydraulic unit for power angling. The “C”
Cartridge contains a spool valve whose static (de-
energized) position allows the pressurized hydraulic
fluid to flow to the right power angling cylinder which
angles the plow to the left. At the same time, it allows
the hydraulic fluid being forced from the retracting
left power angling cylinder to flow through the “C”
Cartridge back to the reservoir.
In the energized position, the pressurized hydraulic
fluid is diverted to the left power angling cylinder,
angling the plow to the right. Also, the hydraulic fluid
being forced from the retracting right power angling
cylinder flows through the “C” Cartridge back to the
reservoir.
“D” Solenoid Valve E-88 only
The “D” Cartridge contains a spool valve when in the
energized position, the pressurized hydraulic fluid is
diverted to the left power angling cylinder, angling the
plow to the right. Also, the hydraulic fluid being forced
from the retracting right power angling cylinder flows
through the “C” Cartridge when de-energized back
to the reservoir.
“E” Solenoid Valve E-88 Only
The “E” Solenoid valve is used on the E-88 E-Z Mount
Xpress for mounting and dismounting of the plow
from the vehicle. The “E” Cartridge contains a spool
valve whose static (de-energized) position allows the
pressurized hydraulic fluid to flow to the live end of the
mount cylinder which mounts the plow to the vehicle.
At the same time, it allows the hydraulic fluid being
forced from the dead end of the double acting mount/
dismount cylinder to flow through the “E” Cartridge
back to the reservoir.
In the energized position, the pressurized hydraulic
fluid is diverted to the to the dead end of the mount
cylinder which dismounts the plow from the vehicle.
At the same time, it allows the hydraulic fluid being
forced from the live end of the double acting mount/
dismount cylinder to flow through the “E” Cartridge
back to the reservoir.
-17-
ELECTRO LIFT® UNIT COMPONENTS CONT.
Coil
The Coil is the electrical component which operates
the Cartridge’s valve mechanism by producing
magnetism which pulls the Cartridge’s armature
toward it. Since the armature is connected to the
valve mechanism’s only moving part, it is pulled
by the armature.
Figure 1-13 illustrates the typical Coil. Whenever
electrical current flows to the Coil, it flows through
the winding, which consists of numerous turns
of copper wire. The flow of current through the
winding produces a magnetic field which pulls the
soft iron armature further into the Coil.
The armature pulls the valve spool or poppet
valve into its alternate (energized) position. Not
illustrated is an integral coil spring, which is
compressed when the armature is pulled by the
magnetism.
When the current flow ceases, the magnetic
field disappears and the compressed coil
spring pushes the armature back to its original
(de-energized) position.
“A” Solenoid Valve E-58H, E-78 & E-88
The “A” Cartridge contains a poppet valve whose
static or de-energized position is closed. Its energized
position is open.
The “A” Solenoid Valve retains hydraulic fluid in the lift
cylinder. It is energized (opened) to allow the hydraulic
fluid to flow from the lift cylinder back to the reservoir,
enabling the plow to lower by gravity.
The “A” Solenoid Valve is designed to remain
energized (open) while the plow is lowered, plowing
snow. This is the “float” feature which insures that the
plow maintains contact with the ground contour.
“B” Solenoid Valve E-58H, E-78 & E-88
The “B” Cartridge contains a poppet valve whose
static or de-energized position is closed. Its energized
position is open.
The “B” Cartridge contains a spool valve whose
(energized) position allows the pressurized hydraulic
fluid to flow to the lift cylinder, raising the plow.
The “B” Cartridge de-energized position retains the
hydraulic fluid in the lift cylinder, holding the plow
up.
To Next Page
Loading...
