4-30 LeeBoy 8510E Conveyor Paver
Operation
Setting the Crown
The screed can also be set to control the pavement
slope, or crown. A pavement crown is the elevation of
the middle in relation to the edges, and insures proper
drainage of the pavement.
To adjust the crown:
1. Loosen the lock-down bolts in slotted bars (on the
right side of paver) and the center plate before
adjusting crown and valley mechanism. (Figure
4-51)
NOTE: The locking bolt on the optional 815HD screed
is located beside the crown adjustment
mechanism. (Figure 4-51)
Figure 4-51. Loosen Lock-Down Bolts
2. Remove the crown handle and insert into adjuster.
(Figure 4-52)
3. For increased positive crown push down on
adjuster.
4. For increased negative crown pull up on adjuster.
5. Use the gauge at the center of the screed above the
standing platform. If the needle is above the zero,
you will have positive crown. If the needle is below
the zero, you will have negative crown.
6. To get exact crown or valley, measure the distance
between a at level surface to the center bottom
portion of screed. Make adjustments with crown and
valley control.
Basic Paving
1. Follow the start-up procedure. (Page 4-4)
2. Position paver at the starting point for the mat.
3. Adjust screed as needed. (Page 4-26)
4. Open the Under Auger Material Cut-Off. (Page
4-25)
5. Open hopper wings. (Page 4-24)
NOTE: Allow only a partial load of asphalt to enter
the hopper when rst starting to pave.
6. Turn the left and right conveyor sonic paddle
switches to the AUTO position.
NOTE: When in the AUTO mode, the conveyors will
operate at the selected speed but will turn on
and off when using the sonic auger.
7. Turn the left and right auger switches AUTO,
using the dials to control the material height at the
endgate.
8. When the material starts moving into the sonic
range, the auger speed will slow proportionately
and turn off, then turn back on when the material
level drops.
NOTE: The material height must be set to the highest
point when the endgates are closed. When
the endgates are open, the material height will
lower to prevent material from pushing in front
of the endgates.
9. When the material begins to discharge from under
the screed, set the screed lift lever to the FLOAT
position.
10. Begin paving, moving slowly at rst to adjust the
screed if needed.
11. Make a paving pass until the asphalt level in the
hopper is low.
NOTE: To prevent excessive handwork, set the left
and right conveyor switches to the OFF position
and set both cut-off levers to the CLOSE position
about three feet from the end of the pull to prevent
excessive handwork.
12. Return paver back to starting position to begin the
next pull.
13. Position and set the screed endgate on the joint
side back to “0” feet, or ush with bottom of the
screed.
14. Repeat these steps as you continue to pave.
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