Spread Hopper
The spread hopper in front of the machine provides
accurate application of the aggregate to the road
surface. The spread hopper is hydraulically controlled
and extends from eight (8) feet (2.44 meters) to 16 feet
(4.87 meters) wide to meet job specications. Grizzly
screens at the top of the spread hopper prevent
oversized aggregate or other debris from entering the
spread hopper.
An auger shaft inside the
spread hopper rotates to
transfer aggregate outward
to the spread hopper evenly,
driven by a hydraulic motor
through a sprocket gear and
chain arrangement. The
spread roll at the bottom of
the spread hopper moves
aggregate out of the hopper
through the cut-off gates to
spread evenly onto the road
surface. Individual cut-off
gates allow spreading width
adjustments in six-inch
increments to the full width
of the hopper. The operator
can engage or disengage
individual cut-off gates
manually or automatically.
Hydrostatic Drive
The Rosco Model CSV Variable Width Chip Spreader is
powered by a diesel engine with dual-range, hydrostatic
drive system that propels the machine forward or
reverse at varying speeds with dynamic braking action.
Components of the hydrostatic drive system include:
• One variable displacement axial piston pump coupled
to the diesel engine.
• One high-torque, bent-axis hydraulic motor at the front
axle, which receives hydrostatic power from the pump.
The machine offers three operational modes to
accommodate a wide range of chip spreading
requirements:
• Automatic: A programmable mode that allows the
operator to pre-set the maximum ground speed for
accurate and repeatable applications. Top speed in
Low Automatic is approximately 880 feet per minute
(268.2 meters per minute), or 10 mph (16 km/h),
depending upon engine and tire options. At speeds
less than the set maximum speed, the operator has
full control.
• Manual: A programmable mode that allows the
operator to adjust ground speed and direction with the
joystick. Top speed in Low Manual is the same as in
Low Automatic. The receiving hopper, spread hopper
and seat slides must be retracted to operate in Travel
Mode. (Page 4-5)
• Travel Mode: This programmable mode allows the
operator to adjust ground speed for travel between
job sites. The machine’s top speed is 20 mph (32
kph).
3
Components
3-5Rosco CSV Variable Width Chip Spreader
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