LeeBoy 8515D - Conveyors; Hydraulic Cut-Off Gates

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LeeBoy 8515D Conveyor Paver 4-23
Operation
Hydraulic Cut-Off Gates
The cut-off gates are another important function of the
paver. The cut-off gates are used primarily to control
the ow of asphalt to the screed and hydraulic screed
extensions. Cut-offs can be used to limit material ow
when making narrow passes at the beginning and
ending of each pass or pull. Proper use of the cut-off
gates minimizes clean-up at the end of pulls. (Figure
4-40)
• The right and left cut-off switches on the manifold
open and close the cut-off gates.
• Holding the switch in the OPEN positions increases
asphalt ow to the screed. Holding the switch in
the CLOSED position decreases asphalt ow to the
screed.
Auger
Cut-O
Gate
Figure 4-40. Cut-Off Gate
NEVER backup with the cut-off gates
open. The cut-off gates are designed to break away
from cylinders when hitting a manhole or other
object when moving forward, but not in reverse.
Conveyors
The LeeBoy Model 8515D Conveyor Paver is equipped
with two automatic conveyors that deliver asphalt evenly
to produce a smooth asphalt mat. (Figure 4-39)
The conveyor is a very important part of the paver that
moves material from the hopper back to the auger
and out of the cut-off gates to the screed. Pay close
attention to integrating its operation into the total
operation of the paver.
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2
Figure 4-39. Conveyor Chains and Paddles
When operating the conveyor:
• Spray down the conveyor drive chains with cleaning
solvent or release agent several times during the work
day for optimum performance.
• Select AUTO or MANUAL mode for the left or right
(or both) conveyor switch(es) on the control panel.
(Pages 3-6 to 3-11)
• If the conveyors are running while the cut-off gates are
closed, there will be spillage, which is normal. 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.