Meyer E-60, E-60H Service Manual
FORM NO. 1-667R7
October 2005
Price: $5.00
QUIK-LIFT
power unit
service manual
MODELS
®
E-60, E-60H
18513 Euclid Ave. • Cleveland, OH 44112-1084
Meyer Products
Phone (216) 486-1313
email•warranty@meyerproducts.com
© 2005 Printed in the U.S.A.
6 Angell Lane• Damariscotta, ME 04543-9720
Diamond Equipment
Phone (207) 563-2227
www.diamondplow.com • email info@diamondplow.com
FOREWARD
This Service Manual includes complete information for servicing the following Quik-Lift® E - 60, E - 60H Units:
The information is grouped according to the type of work being performed, such as diagnosis and testing, disassembly
and reassembly. Special tools and specifications are also included in this manual.
All information, illustrations and product descriptions contained in this manual are correct at publication time. We do,
however, reserve the right to make changes at any time without prior notice.
MEYER PRODUCTS
IMPORTANT: Maintenance and repairs must be performed with the moldboard on the ground.
SECTION INDEX
Section Number Section Title ..................................................... Page
0 GENERAL INFORMATION AND
MAINTENANCE ....................................................... 1
1 GENERAL DESCRIPTION AND
THEORY OF OPERATION ...................................... 4
2 DIAGNOSIS ............................................................. 18
3 REPAIR PROCEDURE ............................................ 26
4 SPECIFICATIONS ................................................... 54
E-60 E-60H
Meyer Products reserves the right, under its continuing product improvement program, to change construction or design
details, specifications and prices without notice or without incurring any obligation.
SECTION 0 - GENERAL INFORMATION AND MAINTENANCE
CONTENTS
GENERAL INFORMATION .................................................... 2
• MODEL IDENTIFICATION .................................................... 2
• MODEL IDENTIFICATION AND
SERIAL NUMBER LOCATION ............................................. 2
• MOTOR IDENTIFICATION .................................................... 2
MAINTENANCE ..................................................................... 2
• GENERAL MAINTENANCE ................................................. 2
• CLEANLINESS ................................................................ 2
• VEHICLE ELECTRICAL SYSTEM ........................................... 3
• CHECK REGULARLY ......................................................... 3
POST-SEASON MAINTENANCE ....................................... 3
• MEYER HYDRAULIC FLUID M-1 ......................................... 3
• REPLACEMENT OF HYDRAULIC FLUID .................................. 3
• FILTERS ....................................................................... 3
• PROTECTION AGAINST RUST
AND CORROSION ........................................................... 3
-1-
GENERAL INFORMATION
E-60 = 6-3/4"
E-60H = 8-7/8"
SERIAL NO.
NAME PLATE
4-1/2" Dia.
SINGLE and TWO TERMINAL
ISKRA
Label 15829
AMJ4739 12V 1,6kw
4-1/2" Dia.
FENNER
Model Identification
The Quik Lift® unit is an electrically powered hydraulic
mechanism specifically designed for use with the
Meyer Snow Plow and is available in four models as
follows:
E-60 Raises, lowers and angles plow
hydraulically (7-way) and is used with
TM, ST and C series Snow Plows.
E-60H Raises, lowers and angles plow
hydraulically (7-way) and is used with
the MDII, HM and Diamond Series
(Trip Edge) Snow Plows.
Model Identification and Serial Number Location
Inclusion of the model number and serial number is
extremely important when writing up warranty claim
forms and product report forms for proper evaluation
and follow up.
The basic model number is located on the name plate
located as shown in Figure 0-1. To determine whether
it is the standard or “H” model, measure the dimension
shown in Figure 0-1. The serial number is located on
the bottom of the base or on the name plate.
Motor Identification
Two di f ferent bra nd motors are used on the
Quik-Lift® units, Fenner (single terminal) and Iskra.
The Iskra motors used in prduction could be either
a single terminal or a two terminal motor. Proper
identification of the brand and supplier part number
is necessary when seeking local parts and service
sources. Note: Brush Kits are the only replacement
part available thru Meyer Products.
The motor with which a specific Quik-Lift® unit
is equipped can be identified by the distinctive
characteristics shown in figure 0-2.
FIGURE 0-1
FIGURE 0-2
MAINTENANCE
The following maintenance information is intended
as a basic guide for providing the Quik-Lift® unit with
the proper service and care. Sustained heavy duty
operation or operating under adverse conditions may
necessitate more frequent servicing.
General Maintenance
Cleanliness
The greatest enemy to any hydraulic system is dirt
or contamination. Therefore, cleanliness must be
stressed at the time of installation, servicing and
repairing.
-2-
Vehicle Electrical System
FILLER PLUG
FILTER
FILTER
GROUND
DRAIN
PLUG
LOWER
ADJUSTMENT
SCREW
Maximum performance and efficiency of the QuickLift® unit requires that the vehicle’s electrical system
be properly maintained and consist of:
Battery -- ........ 70 Amp. Hr. Minimum or
550 Cold Cranking Amps.
Alternator ...... 60 Amp. Minimum
Check Regularly
1. Battery Terminals - Must be clean and free of
corrosion.
2. Electrical Connections - Must be free of corrosion
and tight.
3. Battery - Must be in first-class condition.
4. Alternator (or Generator) and Regulator - Must be
functioning to specifications.
5. Hydraulic Fluid Reservoir Level - A significant drop
in hydraulic fluid level indicates a leak which must
be located and corrected. Insufficient hydraulic
fluid may result in severe damage.
POST-SEASON MAINTENANCE
FIGURE 0-3
Meyer Hydraulic Fluid M-1.
Meyer Hydraulic Fluid M-1 is a specially formulated
mineral oil which maintains an almost constant
viscosity from normal to sub-zero temperatures.
Because it remains free flowing at extremely low
temperatures, the performance and efficiency are
not affected.
Meyer Hydraulic Fluid M-1 also contains an additive
which neutralizes moisture accumulating in the fluid
due to condensation. It is effective for a maximum of
one year’s use.
Meyer Products will not be liable for damages
resulting from the use of inferior or other fluids
or oils.
Replacement of Hydraulic Fluid
After a season’s use, completely drain the hydraulic
fluid (including hydraulic fluid in hoses and cylinders
on Power Angling models). Drain fluid through filler
hole shown in Figure 0-3 or drain hole in base by
completely retracting lift rod and unbolting unit to
pour fluid out or using a suction pump. Disconnect
the fittings at the Angling cylinders, completely retract
the cylinder rods and purge cylinders and hoses of all
hydraulic fluid. Flush the complete system including
unit, hoses and Power Angling rams with a non wax
(Napthenic) cleaner. If kerosene (Parrafinic) is used
to flush the system, the system must be flushed again
to remove any kerosene with a (Napthenic) based
cleaner that is wax free .
Refill Quick-Lift® unit with M-1 Fluid by fully retracting
lift rod (Ram) and filling reservoir to 1-1/2 “ below the
filler hole. Fill and bleed hoses and Power Angling
cylinders by loosening hydraulic fittings at cylinders
until they leak. Power angle plow repeatedly from
one side to the other until fluid flows steadily from the
leaking fittings while maintaining a constant check on
the reservoir fluid level.
Raise and lower the plow several times and with lift
rod fully retracted, give a final check to the fluid level
and replace filler plug.
Filters
Clean the two filters located in base of unit with mineral
spirits or equivalent and blow out with compressed air.
See Figure 0-3 for filter locations.
Protection Against Rust and Corrosion
When the Quik-Lift® unit is not used for extended
periods, protect the chromed lift rod (Ram) by fully
extending it and coating it with chassis lubricant. Full
extension of the lift rod (Ram) fills the cylinder with
hydraulic fluid. Coat the exposed portions of the Power
Angling cylinder rods (Rams) with chassis lubricant to
protect them against rust and corrosion.
-3-
SECTION 1 - GENERAL DESCRIPTION AND THEORY OF OPERATION
CONTENTS
GENERAL DESCRIPTION ..................................................................................................... 5
THEORY OF OPERATION .................................................................................................... 5
• FUNCTIONS ................................................................................................................... 5
•• Model E-60 ......................................................................................................... 5
•• Model E-60H ....................................................................................................... 5
• ELECTRICAL AND FLOW CHARTS ........................................................................................ 6-13
QUIK-LIFT® UNIT COMPONENTS ...................................................................................... 14
• MOTORS ...................................................................................................................... 14
•• Fenner ................................................................................................................. 14
•• Iskra ..................................................................................................................... 14
• HYDRAULIC PUMP .......................................................................................................... 14
• PRESSURE RELIEF VALVE ................................................................................................. 14
• SOLENOID VALVES .......................................................................................................... 15
•• Cartridge ............................................................................................................ 15
•• Coil ...................................................................................................................... 15
“A” Solenoid Valve .............................................................................................. 15
“B” Solenoid Valve .............................................................................................. 15
“C” Solenoid Valve .............................................................................................. 15
• CHECK VALVES ............................................................................................................. 16
• PILOT CHECK VALVE ...................................................................................................... 16
• CROSSOVER RELIEF VALVES ............................................................................................. 16
• SWITCHES .................................................................................................................... 17
•• ELECTRO-TOUCH PAD ............................................................................................... 17
•• SOLENOID SWITCH .................................................................................................... 17
• FILTERS ....................................................................................................................... 17
-4-
GENERAL DESCRIPTION
Float Light
Over Load Light
THEORY OF OPERATION
Quik-Lift® unit is an electrically powered and electrically
controlled hydraulic mechanism specifically designed
for use with Meyer Snow Plows. In addition to raising
and lowering the plow hydraulically, the model E-60,
E-60H angles the plow hydraulically, left and right, via
remote hydraulic cylinders.
The Quik-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.
Included in all models is an electrically controlled
and powered solenoid valve cartridge “A” which is
energized to allow the plow to lower by gravity.
The models E-60 & E-60H include an integral valve
body which contains two additional electrically
controlled solenoid valve cartridges. 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. Angling the plow to the left only requires
energizing the electric motor since the normal route
for the pressurized hydraulic fluid is to the right remote
hydraulic cylinder.
FUNCTIONS
The Quik-Lift® models perform basic functions.
Models E-60 and E-60H
The four basic functions performed are:
• Raise snow plow
• Lower snow plow
• Angle snow plow to right
• Angle snow plow to left
Refer to pages 6 thru 13 for electrical and hydraulic
flow chart for each function. Each figure explains which
component is actuated and related in each function.
RAISE
LEFT
RIGHT
Additional components which control and supply
electrical current to the Quik-Lift® unit are an operator
controlled touch pad; a solenoid switch to supply
high amperage current to the unit’s motor; a wiring
harness to distribute low amperage current between
the toggle switch or switches, motor solenoid and the
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.
LOWER
The current 22154 Electro-Touch Control has
been redesigned. The Touch Pad now has raised
buttons and its circuitry has been changed from
analog to digital, functions have not changed. For
troubleshooting for power at the solenoids do not
disconnect wires. To check for power, prick the wire
through the insulation for testing.
This Electro-Touch Control knows when a short
or an open connection occurs and will go into
overload mode for the function being activated. To
reset the Touch Pad turn the switch on and off. The
Electro-Touch Control will not operate if not wired
properly as per the installation instructions Forms
1-690 or 1-759.
-5-
B
A
T
T
E
R
Y
P
O
S
N
E
G
10A
1
2
3
4
5
6
TO "A" SOLENOID
(BLACK WIRE)
TO "C" SOLENOID
(GREEN WIRE)
TO "B" SOLENOID
(RED WIRE)
TO MOTOR SOLENOID
(WHITE WIRE)
POWER TO SWITCH
(BLUE WIRE)
GROUND
(ORANGE WIRE)
END OF TOUCH PAD HARNESS
FUSE
PANEL
ON / OFF
SWITCH
POWER TO SWITCH
BLUE WIRE
WHITE
WIRE
SWITCH GROUND
ORANGE WIRE
GROUND
POWER
RED
B
When the Up arrow is activated, electric power is sent to both the MOTOR
& “B” Solenoid via wiring harness.
MOTOR SOLENOID
Electric power is sent to this solenoid by the WHITE wire. This wire con-
nects to the small terminal on the motor solenoid. This wire activates the
solenoid switch, allowing electrical power from the vehicle battery to pass
through the solenoid to the lift motor via cables.
NOTE: Motor Solenoid must have a good ground to operate properly.
“B” SOLENOID
Electrical power is sent to this solenoid by the “RED” wire. This solenoid,
when energized, directs hydraulic fluid to the lift cylinder.
NOTE: See illustration below for proper location of “B” Solenoid on the
lift unit.
RAISE
E-60 AND E-60H
RAISE E-60 and E-60H
When the Electro-Touch® control switch is powered up, yellow
lights illuminate the location of the individual arrows for the func-
tion of the snow plow: Up, Left, Right and Down.
CAUTION:
When the snow plow is not in operation, the Electo-Touch® control
switch should be in the “OFF” position.
IMPORTANT:
The power lead (blue wire with fuse) should be connected to a
terminal on fuse panel that is HOT ONLY when the ignition switch
is in the “ON” position.
-6-
P.A. VALVE BLOCK
CROSS-OVER
RELIEF VALVE
3800 P.S.I.
+/- 400 P.S.I.
PILOT
CHECK
VALVE
"B" SOLENOID
ENERGIZED
C
B
PRESSURE
RETURN
LIFT
CYLINDER
FILTER
PUMP
CHECK
VALVE
PUMP OPERATING
LOWER ADJUSTMENT
RESERVOIR
A
PRESSURE
RELIEF VALVE
2500 P.S.I.
E-60 AND E-60H
RAISE FLOW CHART
-7-
B
A
T
T
E
R
Y
P
O
S
N
E
G
10A
1
2
3
4
5
6
TO "A" SOLENOID
(BLACK WIRE)
TO "C" SOLENOID
(GREEN WIRE)
TO "B" SOLENOID
(RED WIRE)
TO MOTOR SOLENOID
(WHITE WIRE)
POWER TO SWITCH
(BLUE WIRE)
GROUND
(ORANGE WIRE)
END OF TOUCH PAD HARNESS
FUSE
PANEL
ON / OFF
SWITCH
POWER TO SWITCH
BLUE WIRE
WHITE
WIRE
SWITCH GROUND
ORANGE WIRE
GROUND
POWER
BLACK
A
When the DOWN arrow is activated, electric power is sent only to the “A”
Solenoid via wiring harness. Electrical power is sent to this solenoid by the
BLACK wire. This wire connects to the BLACK wire on the “A” Solenoid.
Lowering of the snow plow an inch at a time is possible by tapping the
down arrow in short intervals. Holding down the down arrow will activate
the float light located on the upper left of the Electo-Touch® control switch.
This light indicates the snow plow is now in the Lower / Float position. In
this position the snow plow will be able to follow the contour of the road
and the snow plow can also be angled left or right. Touching the Up arrow
on the touch pad automatically cancels the Lower / Float position. Turning
off the ignition switch or the touch pad will reset the switch.
Note: The rate (speed) at which the snow plow is lowered is adjustable.
Turning the Lower Adjustment Screw in (clockwise) will decrease the speed
at which the plow is lowered by gravity, and turning the screw out (counter-
clockwise) will increase the rate.
E-60 AND E-60H
LOWER / FLOAT
LOWER / FLOAT E-60 and E-60H
When the Electro-Touch® control switch is powered up, yellow
lights illuminate the location of the individual arrows for the func-
tion of the snow plow: Up, Left, Right and Down.
CAUTION:
When the snow plow is not in operation, the Electo-Touch® control
switch should be in the “OFF” position.
IMPORTANT:
The power lead (blue wire with fuse) should be connected to a
terminal on fuse panel that is HOT ONLY when the ignition switch
is in the “ON” position.
-8-
P.A. VALVE BLOCK
CROSS-OVER
RELIEF VALVE
3800 P.S.I.
+/- 400 P.S.I.
PILOT
CHECK
VALVE
C
B
PRESSURE
RETURN
LIFT
CYLINDER
FILTER
PUMP
CHECK
VALVE
PUMP OPERATING
LOWER ADJUSTMENT
RESERVOIR
A
PRESSURE
RELIEF VALVE
2500 P.S.I.
"A" SOLENOID
IS ENERGIZED
FLOW CHART
E-60 AND E-60H
LOWER / FLOAT
-9-
B
A
T
T
E
R
Y
P
O
S
N
E
G
10A
1
2
3
4
5
6
TO "A" SOLENOID
(BLACK WIRE)
TO "C" SOLENOID
(GREEN WIRE)
TO "B" SOLENOID
(RED WIRE)
TO MOTOR SOLENOID
(WHITE WIRE)
POWER TO SWITCH
(BLUE WIRE)
GROUND
(ORANGE WIRE)
END OF TOUCH PAD HARNESS
FUSE
PANEL
ON / OFF
SWITCH
POWER TO SWITCH
BLUE WIRE
WHITE
WIRE
SWITCH GROUND
ORANGE WIRE
GROUND
POWER
PRESSURE
RETURN
When the Left arrow is activated, electric power is sent only to the MOTOR
Solenoid via wiring harness.
MOTOR SOLENOID
Electric power is sent to this solenoid by the WHITE wire. This wire con-
nects to the small terminal on the motor solenoid. This wire activates the
solenoid switch, allowing electrical power from the vehicle battery to pass
through the solenoid to the lift motor via cables.
NOTE: Motor Solenoid must have a good ground to operate properly.
“B” and “C” SOLENOIDS
Electrical power is not sent to either of these solenoid. The “C” Solenoid,
when NOT energized, directs the pressurized hydraulic fluid out of the hose
to the right (passenger-side) power angle cylinder.
ANGLE LEFT
E-60 AND E-60H
ANGLE LEFT E-60 and E-60H
When the Electro-Touch® control switch is powered up, yellow
lights illuminate the location of the individual arrows for the func-
tion of the snow plow: Up, Left, Right and Down.
CAUTION:
When the snow plow is not in operation, the Electo-Touch® control
switch should be in the “OFF” position.
IMPORTANT:
The power lead (blue wire with fuse) should be connected to a
terminal on fuse panel that is HOT ONLY when the ignition switch
is in the “ON” position.
-10-
P.A. VALVE BLOCK
CROSS-OVER
RELIEF VALVE
3800 P.S.I.
+/- 400 P.S.I.
PILOT
CHECK
VALVE
C
B
PRESSURE
RETURN
LIFT
CYLINDER
FILTER
PUMP
CHECK
VALVE
PUMP OPERATING
LOWER ADJUSTMENT
RESERVOIR
A
PRESSURE
RELIEF VALVE
2500 P.S.I.
ANGLE LEFT
FLOW CHART
E-60 AND E-60H
-11-
B
A
T
T
E
R
Y
P
O
S
N
E
G
10A
1
2
3
4
5
6
TO "A" SOLENOID
(BLACK WIRE)
TO "C" SOLENOID
(GREEN WIRE)
TO "B" SOLENOID
(RED WIRE)
TO MOTOR SOLENOID
(WHITE WIRE)
POWER TO SWITCH
(BLUE WIRE)
GROUND
(ORANGE WIRE)
END OF TOUCH PAD HARNESS
FUSE
PANEL
ON / OFF
SWITCH
POWER TO SWITCH
BLUE WIRE
WHITE
WIRE
SWITCH GROUND
ORANGE WIRE
GROUND
POWER
PRESSURE
RETURN
C
GREEN
When the Right arrow is activated, electric power is sent to the MOTOR &
“C” Solenoid via wiring harness.
MOTOR SOLENOID
Electric power is sent to this solenoid by the WHITE wire. This wire con-
nects to the small terminal on the motor solenoid. This wire activates the
solenoid switch, allowing electrical power from the vehicle battery to pass
through the solenoid to the lift motor via cables.
NOTE: Motor Solenoid must have a good ground to operate properly.
“C” SOLENOID
Electrical power is sent to this solenoid by the “GREEN” wire. The “C” So-
lenoid, when energized, directs the pressurized hydraulic fluid out of the
coupler to the left (driver-side) power angle cylinder.
Note: See illustration below for proper location of “C” Solenoid on the
lift unit.
ANGLE RIGHT
E-60 AND E-60H
ANGLE RIGHT E-60 and E-60H
When the Electro-Touch® control switch is powered up, yellow
lights illuminate the location of the individual arrows for the func-
tion of the snow plow: Up, Left, Right and Down.
CAUTION:
When the snow plow is not in operation, the Electo-Touch® control
switch should be in the “OFF” position.
IMPORTANT:
The power lead (blue wire with fuse) should be connected to a
terminal on fuse panel that is HOT ONLY when the ignition switch
is in the “ON” position.
-12-
P.A. VALVE BLOCK
CROSS-OVER
RELIEF VALVE
3800 P.S.I.
+/- 400 P.S.I.
PILOT
CHECK
VALVE
"C" SOLENOID
ENERGIZED
C
B
PRESSURE
RETURN
LIFT
CYLINDER
FILTER
PUMP
CHECK
VALVE
PUMP OPERATING
LOWER ADJUSTMENT
RESERVOIR
A
PRESSURE
RELIEF VALVE
2500 P.S.I.
FLOW CHART
ANGLE RIGHT
E-60 AND E-60H
-13-
QUIK-LIFT® UNIT COMPONENTS
RESE RVOIR
ELECTRIC
MOTOR
F
L
O
W
OUTLET LINE
INTAKE LINE
PUMP CHAMBER
PUMP HOUSING
DRIVE GEAR
DRIVEN GEAR
F
L
O
W
Reservoir
Lift Cylinder
Full Stroke
Pressure from
the Pump
SUMP BASE
E-60 with
1-1/4" Lift Ram
OPENS AT
2500
+
50 P.S.I.
E-60 with
1-3/4" Lift Ram
OPENS AT
2000
+
50 P.S.I.
MOTORS ( 4-1/2”) E-60, E-60H
The 12-volt DC high torque motor used on the
Quik- Lift® units are interchangeable among all three
models. Its function in all three applications is to drive
the hydraulic pump. The motor is only energized
and operating when pressurized hydraulic fluid is
required.
Two different brand motors were used. While they
are interchangeable and have nea rly identical
performance characteristics, they have distinctive
design differences.
Fenner
The Fenner motor is a four pole electro magnet motor
which consists primarily of a 4-1/2” diameter solid steel
frame (coated to resist corrosion), armature, brushes,
field coils and pole pieces. This motor can be used
on vehicles with either the common negative ground
electrical system or the positive ground electrical
system.
Iskra - Single and Two terminal
The Iskra motor is a four pole, electromagnet motor
which consists primarily of a 4-1/2” diameter solid
steel frame, armature, brushes, field coils and pole
pieces. This motor can be used on vehicles with either
the common negative ground electrical system or the
positive ground electrical system.
HYDRAULIC PUMP
The pump in a hydraulic system employs an external
source of power to apply a force to a liquid. A pump
develops no power of its own. It simply transfers power
from an external source (the electric motor on the
Quik-Lift® unit) to the liquid in the hydraulic system.
The basic operating principles of the hydraulic pump
used in the Quik-Lift® units are quite simple. Figure
1-1 illustrates the basic components of a positive
displacement gear type pump and their functions. The
pumping action takes place within the pump chamber
which is connected to the reservoir by the intake line.
The pump chamber has an outlet line in which the
liquid under motion and pressure leaves the pump to
perform work.
PRESSURE RELIEF VALVE
A ba s ic p r e ss u re r e lie f v al v e is s h own i n
Figure 1-2. It consists of a poppet valve and a valve
spring. Both are located in a passage which connects
the inlet passage to the outlet passage. The poppet
valve is normally held closed by the valve spring, sealing
the connecting passage from the pressurized outlet
passage. The poppet valve, being a ball, is exposed
to the pressurized hydraulic fluid in the outlet passage.
Whenever the hydraulic pressure against the poppet
valve becomes greater than the pressure being exerted
on the poppet valve from the opposite direction by the
valve spring, the poppet valve will open. This allows
some of the pressurized hydraulic fluid to flow through
the connecting passage to the non pressurized inlet
passage. The effect is to lower the pressure in the
outlet passage which will allow the valve spring to close
the poppet valve again. Under a condition, such as
when a hydraulic cylinder is extended to the end of its
stroke, eliminating additional space for the pressurized
hydraulic oil to be pumped into, the alternate opening
and closing of the poppet valve controls the pump’s
pressure output and provides an escape for the
pressurized hydraulic fluid.
The pressure relief valve used in the Quik Lift® pump,
while more sophisticated than the one described,
functions in the same manner. The pump pressure
relief valve may be set by adjusting the set screw after
installing a suitable pressure gauge of 3000 P.S.I. in
the circuit. See Specifications on page 53.
FIGURE 1-1
FIGURE 1-2
-14-
COIL
VALVE SPOOL
WINDING
ARMATURE
QUIK-LIFT® UNIT COMPONENTS CONT.
SOLENOID VALVES
Hydraulic valves are simple in concept and all have
the same basic function: Control the direction of oil
flow. Three types of Solenoid Valve is used on the
models E-60, E-60H.
Each Solenoid Valve consists of two components: the
Cartridge and the Coil.
Cartridge
The Cartridge consists of the hydraulic valve
mechanism and an armature which enables the
valve mechanism to be operated and controlled
electrically. The Cartridge is designed to screw in
and out of the Quik-Lift® units much like the typical
“spark plug”.
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 1-3 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 (deenergized) position.
“A” Solenoid Valve
The “A” Solenoid Valve is used in the E-60 and E-60H.
These Cartridges contains a poppet valve whose
static or de-energized position is closed. Its energized
position is open.
On both models, 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
The “B” Solenoid Valve is used on the Quik-Lift®
models E-60 and E-60H. The “B” Cartridge contains
a spool valve whose static (de-energized) position
allows the pressurized hydraulic fluid to flow to the
“C” Solenoid Valve. In the energized position, the
pressurized hydraulic fluid is diverted to the lift
cylinder, raising the plow.
“C” Solenoid Valve
The “C” Solenoid valve is used on the Quik-Lift®
models E-60 and E-60H. 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.
FIGURE 1-3
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