Western HTS Mechanic's Manual page 47

RAISE – 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 RAISE function
on the cab control, the control
sends a signal to the plow
module to complete the ground
path for the electrical circuit,
activating the motor relay and
solenoid cartridge valve S3.
2. Hydraulic fl uid from the pump
fl ows through the activated S3
and unactivated S2, through
the internal check valve in S1,
into the rod end of the lift ram,
causing it to retract. At the same
time, hydraulic fl uid is being
forced out of the base of the ram,
through the scrape lock relief
valve (RV4) and returned to the
reservoir.
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
47