Lit. No. 21857
June 15, 2003
30
COMPONENTS LOCATED FRONT LEFT OF VEHICLE
RIGHT SIDE PLOW LAMP
LEFT SIDE PLOW LAMP
VIO
PLOW ASSEMBLY
*
REPRESENTATION
OF PRINTED
CIRCUIT BOARD
11
8
10
9
7
6
4
5
3
CONTROL
*
1
2
ORN
11
10
9
7
8
5
6
TAN
BLK
BRN
GRN
RED
BLU
COIL CORD HARNESS
4
3
1
2
WHT
GRY
YEL
VIO
13
14
ORN/BLK
RED
14
13
12V BA
TTER
Y
LOCATED AT VEHICLE FRONT RIGHT
#6 RED
MTR RLY
10AFB
LOCATED UNDER DASH
BLU/ORN
LT BLU/ORN
BLK/WHT
LT BLU
LT GRN
BRN/RED
WHT/YEL
11
12
9
10
7
8
5
6
3
4
2
1
12
11
10
9
7
8
5
6
3
4
2
1
RED
BRN/GRN
#6 BLK
#6 RED
GR
Y
BLK/ORN
BRN
BLK
WHT
LOCATED AT GRILLE
PUMP MOTOR
#6 RED
#6 BLK
RED
BLK/ORN
S6 SOLENOID
LT BLU/ORN
BLU/ORN
BLK/WHT
WHT/YEL
LT BLU
LT GRN
IGNITION
1
8
12
11
9
10
4
6
7
5
2
3
8
12
11
9
10
4
6
7
5
2
3
1
4
2
3
1
1
2
3
4
S5 SOLENOID
S4 SOLENOID
S3 SOLENOID
S2 SOLENOID
S1 SOLENOID
FASTON
BLADE MOVEMENT
LEFT EXTEND
BRN
BRN
VIO
WHT
M +
LEFT EXTEND – ELECTRICAL
Blade Movement: Left Extend
Controller Mode: Wing Mode
Controller Button: L/SCP
This button toggles between retract
and extend in wing mode. Upon
entering wing mode, the first
activation of this button and every
other activation thereafter retracts
the wing. The second activation of
this button and every other
activation thereafter extends the
wing.
System Response:
1)
By pressing the controller button,
the circuit board within the cab
control completes the ground path
for the electrical circuit.
2)
Electrical current flows through
the motor relay, activating the
pump motor, and solenoid
cartridge valves S2 & S4, shifting
both spools.
3)
Hydraulic oil from the pump flows
through solenoid cartridge valves
S2 & S3, P/O check valve (A),
solenoid cartridge valve S4 and
into the base end of the left
cylinder causing it to extend.
4)
The extending left cylinder
pushes the hydraulic oil out of its
rod end. This oil mixes with the
hydraulic oil from the pump,
passes through solenoid
cartridge valve S4 and into the
base end of the extending left
cylinder. This is called a
regenerative hydraulic circuit.
Even though both sides of the
cylinder piston will experience the
same hydraulic pressure, the
cylinder will extend due to unequal
force. The difference in area
between the base end and rod
end of the cylinder piston creates
a greater force on the base end
which extends the cylinder. Force
= Pressure X Surface Area.
5)
Pressure within the hydraulic
circuit causes P/O check valves
(B) & (C) to open.