Meyer ELECTRO LIFT E-57 User manual

DIAGNOSTIC FLOW CHART FOR
E-57 & E-60 ELECTRO LIFT®UNITS
WITH TOUCH PAD
These charts are intended to be used as an aid in diagnosing problems on the Electro Lift®units. They are not a substitute for factory
training and experience. Be certain to read the General Information and Testing Tips sections before attempting any troubleshooting.
IMPORTANT: Maintenance and repairs must be performed with the moldboard on the ground.
General Information
Before any troubleshooting is started, make certain the following conditions are met.
1. The moldboard is pointing straight ahead. This can often be done by coupling the left cylinder into the right cylinder and
pushing the moldboard by hand.
2. The power angling cylinders must be installed correctly on to the A- frame. The left cylinder (Driver’s side) has a hose attached
with a male half of a coupler at the end; the right cylinder (Passenger side) has a hose attached with a female half of a coupler
at the end.
3. The solenoid coils must be on their proper valve. (See drawing below).
TESTING TIPS
Many tests do not require removing the Electro Lift®unit from the vehicle. However, more thorough testing can be performed using
the Meyer Test Stand which allows direct pressure and amperage readings.
1. Using a screwdriver or other small tool to check for magnetism of the solenoid coils “A”, “B” and “C”. Place the tool on the nut
securing the coil and have an assistant operate the switch. You should feel strong magnetic attraction.
2. Use a test light or volt meter to determine whether there is power at the harness or switch.
3. When determining AMP draw of the motor, always obtain the highest value possible, i.e, at maximum raise or maximum angle
with motor running.
4. Proper rotation for the 4-1/2” motor (Fenner/Iskra) is clockwise by looking at the motor shaft from the bottom of the motor.
5. The pump shaft of a good pump can be turned smoothly using two fingers. If it can’t be turn easily, the pump is too tight and
must be replaced.
6. Pump pressure can be measured at an angle hose (note pressure at full angle) or in the pressure filter port (an adaptor is
necessary for the filter port).
7. Flush the complete system including unit, hoses and power angling rams with a non wax (Napthenic) oil / cleaner. If kerosene
(Parrafinic) is used to flush the system, the system must be flushed again to remove any kerosene with a (Napthenic) based
oil / cleaner that is wax free.
BATTERY
POSNEG
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
GREEN
BLACK
C
A
E-60 & E-60H
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. The 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 (1-690 & 1-759).
ON/OFF
SWITCH
POWERTOSWITCH
BLUEWIRE
WHITE
WIRE
SWITCHGROUND
ORANGEWIRE
GROUND
RED
POWER
"B"
DRAIN DRAIN
D1
NEGA
TIVE
A2
POSITVE
BATTERY
POSNEG
10A
FUSE
PANEL
Ignition Switch
"ON"
E-57 & E-57H

SNOW PLOW WILL NOT RAISE
Does the Motor
Operate?
Is there power
going to
the motor?
Are all electrical
connections clean
and tight?
Is Battery Charged?
Charge Battery -
Clean and tighten
all electrical
Connections.
Remove motor.
Does motor run when
12 volts is applied?
Inspect Motor -
Armature, Brushes
Repair or Replace
Motor as necessary
Is there power
going to the
motor solenoid,
at White Wire?
Is there power
leaving the
switch?
Check switch
for Continuity
Check Wires at
Molded connector.
Can the pump
shaft turn by
hand?
Replace pump.
Replace the
Motor
Solenoid.
Replace the
Wiring
Harness.
Is the Fuse
OK?
Is Ground Cable
attached to the
Negative (-)
Battery Terminal?
Replace the
To u c h
Pad
Does the snow plow
angle to the left
instead of raising?
Does the snow plow
angle when the
Angle Switch
is activated?
Is there pressure
(or flow) at the
Filter port?
Is the "A" Valve
stuck in the
open position?
Clean or Replace
"A" Valve.
-Retest -
Does snow plow
raise?
Disassemble unit -
Inspect O-rings,
Cylinder,Piston
assembly.
Look for blockage
in Sump Casting
passages.
Can pump relief
pressure be adjusted
to 2000 P.S.I.
Are the
Filters
Clogged?
Clean
or
Replace
Filters.
Is the motor turning
the proper direction?
Check Brushes for
proper installation or
replace motor.
Replace
the
Pump.
Is the pump
shaft turning
tightly?
Does the motor
armature turn
tightly?
Replace
the
Pump.
Repair or Replace
the motor.
Replace Fuse.
Check for short
in Harness,
"B" Coil, Switch
Connections,
Motor Solenoid,
Electric Motor.
NO NO
NO NO
NO
NO NO
NO
NO
NO NO NO NO NO
NO
NO
NO NO NO
NO
NO
NO
NO
NO NO
YES
YES
YES
YES
YES
YES YES YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES YES YES
YES
YES
YES
Does the "B" Coil
(Red Wire) have
magnetism?
Are the "B" Valve
O-Rings in good
Condition?
Replace
O-Rings.
Clean or
Replace the
"B" Valve
and retest.
Replace P.A. Block
with E-46 plate and
retest. - Does snow
plow Raise now?
Replace
Sump Base.
Replace
P.A. Block
Is there power to
the "B" Coil?
(Red Wire)
at Harness
Is there power
leaving the switch
at the red wire?
Replace
"B" Coil.
Replace
the wiring
harness.
Replace
Touch Pad
Are wires in
molded connector
making contact
with the switch?
Is the fluid level
1-1/2" below
filler hole?
ADD M-1
Fluid

SN
O
W PL
O
W LEAKS D
O
WN
Does the
snow plow drop
straight down?
Does the snow plow
drop and angle
to the left?
NO
NO
NO
YES
YES
NO
NO
NO
NO
NO
NO
NO
SNOW PLOW WILL NOT LOWER
NO
NO
YES YES YES
NO
Replace
"B" Check Valve
Does it now hold?
Replace
"B" Valve
Does it now hold?
Replace
Sump Base
Are "A" Valve O-rings
in good condition?
Does "A" Valve stem
move freely?
Replace O-Rings
Replace "A" Valve
Dissasemble unit
Inspect O-Rings,Cylinder,
Piston Assembly.
Does it hold now?
Sump Base
Dissasemble unit
Inspect O-Rings,Cylinder,
Piston Assembly.
Does it hold now?
Replace
Sump Base
Does "A" Coil
(Black Wire) have
magnetism?
Replace "A" Valve
Does it now lower?
Is there power to the
"A" Coil (Black Wire)
at harness?
Is there power leaving
the switch at the
Black Wire?
Is the Touchpad
plugged in completely?
Replace
"A" Coil
Check for a clogged
filter or a blocked
passageway.
(Lower Adj. Screw)
Check for Bent or
Siezed Ram
Assembly.
Replace
To u c h P a d
Replace
Harness
Is Fuse
OK?
YES
Replace the fuse -
Check for short in
harness, "A" Coil,
Plug connections.
YES
YES
Replace

SNOW PLOW WILL NOT ANGLE LEFT
Can the snow plow
Raise?
See the Raise
Flow Chart
Section
NO
NO
NO
YES YES YES
NO
Is there power to
the motor solenoid?
(White Wire)
Is there power
leaving the switch?
Is the Touchpad
plugged in completely
Are "C" Valve
O-Rings in good
condition?
Replace
Piston
Weld
1-1/2" x 1-1/2" x 1/2"
spacers to the A-Frame
stops.
Replace
O-Rings
Replace the
P. A . B l o c k
YES
Will the snow plow angle
right & left if not allowed
to travel to extreme
angled position?
YES
Does the motor run
when angle switch
is pushed?
NO
Replace Harness Replace
Touch Pad
NO
NO
Does the snow plow
angle to the right
the angle left
switch is pushed?
Is the ampere draw
less than 100 amps
while trying to angle
snow plow?
Can the snow plow be
angled by hand when the
P.A. Rams are disconnected
from A-Frame?
Does the snow plow
raise instead of
angling left?
NO
NO
Relieve the interference
between the
Sector and A-Frame.
NO
Clean or replace the
"C" Valve.
Retest
Is the Pilot piston in
good condition?
(worn/sloppy or missing)
Clean or replace the
"B" Valve.
Retest
Does pressure remain
in angle hose
when the motor
is not running?
NO
NO
YES YES
YES
NO
Temporarily put 1/2" blocks
between the Sector and
A-Frame to limit the degree
of angle. Will the snow plow
now angle?
Replace both the
Coupler sets and/or
clean or replace the
"C" Valve.
If both hoses are stiff
inspect the Pilot Check
Piston and "C" Valve
for binding.
If one hose is stiff
inspect the the "C"
valve for binding.
Replace Coupler sets.
Clean or replace
the Crossover Relief.
Does the snow plow
now angle?
YES YES
YES
YES
NO
YES

Replace both the
Coupler sets and/or
clean or replace the
"C" Valve.
S
N
O
W PL
O
W WILL N
O
T AN
G
LE RI
G
HT
Can the snow plow
Raise?
See the Raise
Flow Chart
Section
NO
NO
NO
YES YES
NO
Is there power to
the motor solenoid?
(White Wire)
Is there power
leaving the switch?
Are the wires in
molded connector
making contact with
the switch?
Are "C" Valve
O-Rings in good
condition?
Replace the
"C" Coil.
Retest
Replace
O-Rings
Replace the
P.A. Block
YES
Does the motor run
when angle switch
is pushed?
NO
Replace Harness Replace
Touch Pad
Can the snow plow
angle to the Left?
Does the snow plow
raise instead of
angling left?
NO
NO
Does the "C" Coil
have magnetism?
(Green Wire)
Is there power to
the "C" Coil?
(Green wire at harness)
Clean or replace the
"B" Valve.
Retest
NO
YES
Clean or replace
the Crossover Relief.
Does the snow plow
now angle?
YES YES
YES
NO NO
Is there power
leaving the switch?
Are the wires in
molded connector
making contact with
the switch?
YES
Replace Harness
YES
YES
YES
Replace
Touch Pad

SN
O
W PL
O
W WILL N
O
T H
O
LD ANGLE
Bleed air from the system
and snug up gland nuts.
Check couplers and fittings
for leaks.
NO
NO
Does the moldboard
hold left angle & release
from right angle?
Are the "C" Valve
O-Rings in poor
condition?
Is Crossover Relief set
at 3800 + 400 P.S.I.?
Are Crossover O-Rings
in good condition?
Are the Rams mushy?
Can you push the moldboard
6" to 8" by hand?
NO
Replace O-Rings Replace the
P.A. Block
NO
Change Pilot Check
Ball and Seat.
does snowplow
now hold?
Inspect Crossover Relief.
(Rebuild or Replace)
Does snow plow now
hold angle?
Inspect "C" Valve O-rings
Change if necessary. Does
snow plow now angle?
YES YES
YES
NO
Replace the
P.A. Block
YES
NO
Set Crossover Relief to
3800 +400 P.S.I.
Replace Crossover O-Rings
or complete Crossover.
NO