Western HTS Mechanic's Manual page 49

LOWER / FLOAT – ELECTRICAL
BLK
Pump
Motor
RED
Motor
Relay
BLK
RED
S1
WHT
S2
GRN
S3
BLU
Lit. No. 41467, Rev. 01
A
A A
B B
TAN C C
WHT D D
E E
RED F F 12V
G G
H H
J J
BLK K K COM
4A Fuse: S1, S2, S3
4A Fuse: Motor
Relay
B
RED A A 12V
B B
C C S3
S2
D D
S1
E E
F F M/R
G G
H H
J J
RED K K 12V
C
Wire Side View
10-Pin Connector
A K
B J
C H
D G
E F
System Response
1. By activating the LOWER
function on the cab control, the
control sends a signal to the plow
module to complete the ground
path for the electrical circuit,
activating solenoid cartridge
valve S1.
2. With the weight of the snowplow
on the rod end of the lift ram and
S1 cartridge valve shifted, the
lift ram extends. Hydraulic fl uid
is pushed out of the rod end,
through activated S1, unactivated
S2 and S3, and back to the
reservoir. At the same time,
hydraulic fl uid is being drawn
through CV2 into the base end of
the ram from the reservoir.
NOTE: When activating FLOAT
mode, the S1 cartridge stays
open until the RAISE function is
activated.
NOTE: Battery voltage is supplied
to the plow module, the motor
relay and the three solenoid coils
when the snowplow is connected
to the vehicle.
April 15, 2021
49