Western Snowplows Midweight Series, Mechanic'S Manual

Page: 50 / 104

Lit. No. 48163, Rev. 00 March 15, 2016
50
ANGLE LEFT – ELECTRICAL
–
+
BATTERY
S2
S3
BLK/ORN
S1
WHT/YEL
LTGRN
LTBLU
RED
BLK/OR
N
BLK/ORN
BLK/ORN
RED/GRN
GRN LTGRN
WHT/YEL
BLK/ORN
BRN/RED
LTBLU
RED
BLK
BLU
BRN
WHT RED/YEL
6
5
4
3
6
5
4
3
2
1
2
1
RED
YEL
ORN
BLU
GRN
BLK/WHT
6
5
4
3
2
1
8 8
11
10
9
10
11
9
7
5
6
7
5
6
3
4
1
2
3
4
2
1
LTBLU
LTGRN
WHT/YEL
BLK/OR
N
RED/GR
N
RED/YEL
RE
D
15A
DKBLU/WH
T
Plow
Control,
Hand-Held
K J H G F E D C B A
A B C D E F G H J K
7.5A
A C B D
C B A
DKBLU/RED BLU
Located
under dash
NEG.
POS.
Battery Cable 22"
Motor
Relay
Pump
Motor
Vehicle Battery Cable
Plow
Control,
Joystick
Vehicle Control Harness
Plow Battery Cable
To Switched
Accessory Lead
29047
Adapter
Plow
Control
Harness,
11-Pin
Vehicle
Control
Harness,
11-Pin
System Response
1. By activating the LEFT function on the cab
control, the circuit board within the cab control
supplies power for the electrical circuits.
2. Electrical current flows through the motor
relay, activating the pump motor, and solenoid
cartridge valves S2 & S3, shifting both spools.
3. Hydraulic fluid from the pump flows through
the solenoid cartridge valves S3 & S2, and into
the base end of the right cylinder, causing it to
extend.
4. Pressure within the hydraulic circuit shifts the
spool, opening the poppet check valve.
5. The retracting left cylinder pushes the hydraulic
fluid out of its base end, through the open
poppet check valve and solenoid cartridge
valve S3 and back to the reservoir.
3-PLUG SYSTEM