Bearcat BC-502/CRC, Instruction Manual

Page: 25 / 164

25
Circulation Control
The spray bar contains two
pressure-equalizing valves,
one located at each end of
the main bar just inboard
of the wing swing joint. A
third equalizer valve is
located in the transverse
pipe connecting the two
spray bar flexible feed
lines. All three equalizer
valves are connected to the
spray bar MASTER switch
on the Cab Panel. When
the spray bar master switch is on, the equalizer valves are open,
permitting asphalt to flow equally throughout the bar and wings for
uniform distribution. When the spray bar master switch is off, the
valves are closed. Asphalt then circulates out of the tank, through the
pump, through the entire spray bar, and back to the tank.
Bar Movements
The spray bar can be moved right and
left to a maximum of 13 inches (33 cm)
in either direction, allowing a total
horizontal travel of 26 inches (66 cm).
The bar can be raised to approximately
20 inches above the ground and
lowered to within 10 inches of the
ground (51 and 15 cm respectively). A
hydraulic lockout valve holds the bar at
any height within this range. A
mechanically adjustable stop is provided to limit downward travel to a
set position. The right and left wings can be hydraulically lifted 90° to a
vertical position, which places them well within the width of the truck.
All bar movements are powered by hydraulic cylinders and controlled
by switches on the Cab Console and Rear Control Panel. When in the
horizontal position, the wings can pivot forward or backward without
damage if they should hit an obstruction.
Break-Away Bar