Meyer E-68 E-Z Mount Xpress Manual de usuario
FORM NO. 1-822 R1
May 2011
E-68 Xpress
power unit
service manual
© 2011 Printed in the U.S.A.
Meyer Products LLC
18513 Euclid Ave. • Cleveland, Ohio 44112-1084
Phone 486-1313 (Area Code 216)
FOREWARD
This Service Manual includes complete information for servicing the following Electro Lift®Units:
E-68 E-Z Mount Xpress
IMPORTANT: Maintenance and repairs must be performed with the moldboard on the
ground.
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 INC.
SECTION INDEX
Section Number Section Title ..................................................... Page
0 GENERAL INFORMATION AND
MAINTENANCE ........................................................ 1
1 GENERAL DESCRIPTION AND
THEORY OF OPERATION ........................................ 5
2 DIAGNOSIS ............................................................. 16
3 REPAIR PROCEDURE .............................................. 24
4 SPECIFICATIONS ..................................................... 43
Meyer Products Inc. 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
•M
ODEL IDENTIFICATION .................................................... 2
•M
ODEL IDENTIFICATION AND
SERIAL NUMBER LOCATION .............................................. 2
•M
OTOR IDENTIFICATION ................................................... 2
MAINTENANCE ................................................................... 2
•G
ENERAL MAINTENANCE ................................................... 2
•C
LEANLINESS ................................................................. 2
•V
EHICLE ELECTRICAL SYSTEM ........................................... 2
•C
HECK REGULARLY ........................................................ 2
POST-SEASON MAINTENANCE ........................................... 2
•M
EYER HYDRAULIC FLUID M-1 ......................................... 2
•R
EPLACEMENT OF HYDRAULIC FLUID ................................... 3
•F
ILTERS ........................................................................ 3
•P
ROTECTION AGAINST RUST
AND CORROSION ............................................................ 3
-1-
Vehicle Electrical System
Maximum performance and efficiency of the Electro
Lift®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
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 Inc. will not be liable for damages
resulting from the use of inferior or other fluids or
oils.
GENERAL INFORMATION
Model Identification
The E-68 unit is an electrically powered hydraulic
mechanism specifically designed for use with the Meyer
E-Z Mount Xpress Snow Plow systems.
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 (plastic cover). The serial number is located
on the name plate decal underneath the plastic cover.
MAINTENANCE
The following maintenance information is intended as
a basic guide for providing the E-68 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-
Replacement of Hydraulic Fluid
After a season’s use, completely drain the hydraulic
fluid (including hydraulic fluid in hoses and
cylinders). Drain fluid through filler hole shown in
Figure 0-1 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 and Mount (E-68 only) cylinders and
completely retract the cylinder rods and purge
cylinders and hoses of all hydraulic fluid. Flush the
complete system including unit, hoses and angling
rams with the M-2 Flushing Fluid, or 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 M-2 Flushing
Fluid, or a (Napthenic) based cleaner that is wax
free .
Refill E-68 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 and
Mount 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. Repeat for mounting
cylinder.
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 and
power angling block with mineral spirits or
equivalent and blow out with compressed air. See
Figure 0-1 for filter locations.
Protection Against Rust and Corrosion
When the E-68 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) and Mount cylinder of the E-Z
Mount Xpress with chassis lubricant to protect them
against rust and corrosion.
-3-
Drain Plug
Filler Plug
Filter Plugs
Lift Rod
FIGURE 0-1 E-68
SECTION 1 - GENERAL DESCRIPTION AND THEORY OF OPERATION
CONTENTS
GENERAL DESCRIPTION ................................................................................................. 5
THEORY OF OPERATION ................................................................................................. 5
•F
UNCTIONS E-68 ......................................................................................................... 5
•E
LECTRICAL AND FLOW CHARTS ...................................................................................... 6-11
ELECTRO LIFT® UNIT COMPONENTS ......................................................................... 12
•M
OTORS ...................................................................................................................... 12
•• Iskra .................................................................................................................... 12
•H
YDRAULIC PUMP .......................................................................................................... 12
•P
RESSURE RELIEF VALVE ................................................................................................ 12
•S
OLENOID VALVES ......................................................................................................... 12-13
•• Cartridge ............................................................................................................ 12
•• Coil...................................................................................................................... 13
“A” Solenoid Valve............................................................................................. 13
“B” Solenoid Valve ............................................................................................ 13
“C” Solenoid Valve ........................................................................................... 13
“D” Solenoid Valve ........................................................................................... 13
“E” Solenoid Valve ............................................................................................ 13
•C
HECK VALVES .............................................................................................................. 13
•P
ILOT CHECK VALVE ...................................................................................................... 14
•C
ROSSOVER RELIEF VALVES ............................................................................................ 14
•S
OLENOID SWITCH ........................................................................................................ 14
•F
ILTERS ....................................................................................................................... 14
-4-
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.
-5-
PUMP
CHECK VALVE
STRAINER
LIFT
CYLINDER
SUMP CASTING
FILTER
PRESSURE PORT
RESERVOIR
RESERVOIR
RETURN TO
RESERVOIR
"B"
CHECK
VALVE
LOWER
ADJUSTMENT
DUAL
PILOT
CHECK
MOUNT - DISMOUNT CYLINDER
A
E
VALVE ASSEMBLY
FILTER
X
PUMP
B
MOUNT
NOT
"ENERGIZED"
PRESSURE RELIEF VALVE
NON ADJUSTABLE
OPENS at 2000 + 50 P.S.I.
CROSS-OVER
RELIEF VALVE
3800 + 400 P.S.I.
POWERANGLING
CYLINDERS
DUAL
PILOT
CHECK
POWERANGLING
CYLINDERS
RETURN TO
RESERVOIR
D
X
C
X
E-68 Mount, Motor Only
-6-
FIGURE 1-1
PUMP
CHECK VALVE
STRAINER
LIFT
CYLINDER
SUMP CASTING
FILTER
PRESSURE PORT
RESERVOIR
RESERVOIR
RETURN TO
RESERVOIR
"B"
CHECK
VALVE
LOWER
ADJUSTMENT
DUAL
PILOT
CHECK
MOUNT - DISMOUNT CYLINDER
A
VALVE ASSEMBLY
FILTER
X
PUMP
B
DISMOUNT
E
PRESSURE RELIEF VALVE
NON ADJUSTABLE
OPENS at 2000 + 50 P.S.I.
CROSS-OVER
RELIEF VALVE
3800 + 400 P.S.I.
POWERANGLING
CYLINDERS
DUAL
PILOT
CHECK
POWERANGLING
CYLINDERS
RETURN TO
RESERVOIR
C
X
D
X
PURPLE WIRE
"ENERGIZED"
PURPLE "ENERGIZED" (TAN WIRE GROUND)
E-68 Dismount, Motor and “E” Solenoid
-7-
FIGURE 1-2
PUMP
CHECK VALVE
STRAINER
LIFT
CYLINDER
SUMP CASTING
PRESSURE RELIEF
VALVE- NONADJUSTABLE
2000 P.S.I.
CROSS-OVER
RELIEF VALVE
3800 + 400 P.S.I.
POWERANGLING
CYLINDERS
FILTER
PRESSURE PORT
DUAL
PILOT
CHECK
POWERANGLING
CYLINDERS
RESERVOIR
RESERVOIR
RETURN TO
RESERVOIR
RETURN TO
RESERVOIR
"B"
CHECK
VALVE
LOWER
ADJUSTMENT
DUAL
PILOT
CHECK
MOUNT - DISMOUNT CYLINDER
A
E
VALVE ASSEMBLY
FILTER
PUMP
B
RAISE
NOT
"ENERGIZED"
X
D
X
C
X
RED WIRE
"ENERGIZED"
RED "ENERGIZED" (TAN WIRE GROUND)
E-68 Raise, Motor and “B” Solenoid
-8-
FIGURE 1-3
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