Chrysler DODGE D150 1993 Service Manual page 790

• FRAME AND BUMPERS 13 - 3
S N O W PLOW
NDEX
page
Power Angling Cylinder Service 16
Power Unit . . 13
Service Information 3
Snow Plow Control Module 17
S n o w Plow Frame 16
SERVICE INFORMATION
A snow plow is optionally available for 4WD Ram
Truck and Ramcharger vehicles. The primary me­
chanical components are illustrated in Figure 1.
LIFT ARM
RUNNERS J9001-2
Fig. 1 Snow Plow Components
COMPONENT DESCRIPTION
The primary snow plow components are described
within the following list:
• Moldboard — Snow blade constructed from high
tensile steel
• Trip springs — Allow the moldboard to tilt for­
ward and slide over obstructions without losing the
snow load
• Sector — Used for positioning the moldboard
• straight ahead or angling it to the right or left
page
Snow Plow Malfunction Diagnosis and Tests 4
Snow Plow Pivot Bracket 16
Snow Plow Wiring Diagrams 4
System Description and Operation 3
• Sector shear pin — Self-locking pin t h a t locks
the moldboard in either a straight ahead or an an­
gled plowing position
If the blade impacts obstructions, the pin will
shear to protect the s n o w plow and the vehicle
from damage. The pin is not u s e d with p o w e r
angle plowing.
• P o w e r angling cylinders — Enable the operator
to move the moldboard either straight ahead or to
the side
• Hinge pins — Allows the A-Frame to pivot up
and down. The pins act as attaching points.
• Cutting e d g e — Replaceable blade edge extends
the life of the blade
• Runners — Adjustable runners retain the cutting
edge at the proper height
• Sno-Flo paint — Specially developed high-
• visibility, yellow paint provides fast, smooth snow-
rolling action
• Hydraulic p u m p and motor (Electro-Touch ™)
— Hydraulically raises, lowers and angles the snow
plow
• A-frame — Provides the means for attaching the
snow plow to the vehicle
• Lift arm — Raises and lowers the snow plow.
SYSTEM DESCRIPTION AND OPERATION
HYDRAULIC CYLINDER AND MOTOR
The hydraulic cylinder and motor unit is designed
to raise, lower and angle the blade.
The power unit is a high torque, 12-volt motor t h a t
is coupled to a gear-type hydraulic pump.
The toggle switches operate the solenoid valves.
The following components control the snow plow
blade positioning:
• Solenoid valves designated A,B, and C
• Mechanical hydraulic check valves
• Pilot check valve
• Crossover relief valve
SOLENOID fELEGTRO'MEGHANIGALj VALVES
Three solenoid valves are used for snow plow con­
trol. Each valve is comprised of two components:
• Cartridge — Comprised of a valve and a solenoid.