Lit. No. 27366, Rev. 01 February 15, 2008
33
ELECTRICAL & HYDRAULIC SCHEMATICS
The following section contains
hydraulic and electrical schematics to
help explain how the hydraulic unit
performs the different functions. A
schematic is an abstract drawing
showing the purpose of each of the
components in the system. Each
component is represented by a
graphical symbol. The hydraulic and
electrical legends describe each of
the symbols used in the schematics
for this guide.
The first two schematics show a
general overview of the complete
hydraulic and electrical systems.
Other schematics highlight the flow
of hydraulic fluid and electrical
current for each function the
hydraulic unit performs as well as the
flow of electrical current for the
snowplow and vehicle lights.
• Bold lines represent the circuit
being activated only.
• Shaded components are either
activated or shifted from their
normal position.
CROSSING WIRE
WIRE SPLICE
FUSE
SOLENOID COIL
CIRCUIT GROUND
MOTOR RELAY
BATTERY
MOTOR
IN LINE CONNECTOR
PARK/TURN LAMP
COMPONENT ENCLOSURE
PRINTED CIRCUIT BOARD
L
H
HEADLAMP
CHECK VALVE
ELECTRICAL LEGEND HYDRAULIC LEGEND
COMPONENT ENCLOSURE
FILTER, STRAINER,
DIFFUSER
ELECTRIC MOTOR
RAM
HYDRAULIC PUMP
FIXED DISPLACEMENT
LINE, TO RESERVOIR
BELOW FLUID LEVEL
FLOW, DIRECTION OF
HYDRAULIC FLUID
LINE, WORKING (MAIN)
LINES JOINING
LINES CROSSING
SPRING
SOLENOID, SINGLE WINDING
VALVE, ADJUSTABLE
PRESSURE RELIEF
VALVE, FLOW CONTROL,
ADJUSTABLE-
NON-COMPENSATED
VALVE, TWO POSITION,
TWO CONNECTION
(TWO WAY)
VALVE, TWO POSITION,
TWO CONNECTION
(TWO WAY) WITH INTEGRAL
CHECK VALVE
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