LeeBoy 8520C - Conveyor and Cut-Off Operation; Conveyor System Operation and Maintenance; Under Auger Material Cut-Offs Operation

4-30 LeeBoy 8520C Conveyor Paver
Operation
ConveyorsConveyors
The conveyor is a very important part of the paver that
moves material from the hopper back to the auger and
out of the Under Auger Material Cut-Offs to the screed.
(Figure 4-60) Pay close attention to integrating
conveyor operation into the total operation of the paver.
NOTE: Spray down the conveyor drive chains with
cleaning solvent or release agent several
times during the work day for optimum perfor-
mance.
• Select AUTO or Override (to operate manually) mode
for the left or right (or both) conveyor switch(es) on the
control panel. (Figure 4-60)
NOTE: Operating in the AUTOMATIC mode is highly
recommended.)
Conveyor
Switches
Figure 4-60. Conveyor Switch
• If the conveyors are running while the Under Auger
Material Cut-Offs are closed, there will be spillage,
which is normal. (Figure 4-61) To help prevent this
spillage, work conveyors manually when loading
hopper and not paving.
• Irregular movement of the conveyor indicates that the
conveyor chains need adjustment. (See Section 5)
NOTE: Check conveyor chain adjustment every 100
hours.
Never leave the paver unattended
while the conveyor is operating. Do not leave paver
running with conveyors set to AUTO for any length of
time to prevent hydraulic oil overheating.
Asphalt in the conveyors can ll tracks
and cause damage to the machine. To prevent
ight chains from sticking inside the conveyor
pans, lubricate them daily for maximum operational
efciency.
Auger
Cut-O
Gate
Figure 4-61. Under Auger Material Cut-Offs
Under Auger Material Cut-Offs Under Auger Material Cut-Offs
The Under Auger Material Cut-Offs are another
important function of the paver. (Figure 4-61) The cut-
offs are used primarily to control the ow of asphalt to
the screed and hydraulic screed extensions. Cut-offs
can limit material ow when making narrow passes at
the beginning and ending of each pass or pull. Proper
use of the cut-offs minimizes clean-up at the end of
pulls.
NEVER back up with the cut-offs open.
• Use the right and left cut-off switches on the control
panel open and close the cut-offs. (Figure 4-62)
• Pushing the switch to the OPEN positions increases
asphalt ow to the screed. Pushing the switch to
the CLOSED position decreases asphalt ow to the
screed.
Left/Right Cut-O
Figure 4-62. Left and Right Cut-Off Switches