LeeBoy 8616 - Setting Screed Extensions; Mat Texture Adjustment

6
LeeBoy Model 8616 Conveyor Paver 6-21
Operation
Setting Screed Extensions
NOTE: Used when paving over 8 ft. (2.4 m).
The screed extensions should be heated with initial
30 minute heating cycle and paving on asphalt before
making adjustments. Use the wrench provided to make
adjustments. If correct adjustment is made, the pressure
on the rear edge of extended screed is the same as
on the rear edge of main screed. The result of making
this adjustment will be a smooth mat the length of the
screed.
NOTE: Make adjustments only while paving.
1. Heat the screed extension before making
adjustment to extended width.
2. Adjust tilt on the rear edge of the extension
by turning adjustment (Figure 6-21,1)
counterclockwise (CCW). This is done to give the
same amount of compaction and slickness on the
extension and main screed.
3. If drag occurs in center of the screed, then too
much pressure is on the screed extension and the
extension is carrying all the weight. Correct this by
turning the adjustment clockwise (CW) until both the
screed and the screed extension produce the same
mat texture.
Mat Texture Adjustment
The screed should be hot and paving on asphalt before
making any adjustments. The screed can be adjusted
for a smoother or coarser mat texture by using the mat
texture adjusting screws (Figure 6-21). Make sure the
bottom of the screed is sprayed down before making
any texture adjustments (see Spray Down).
Fire Hazard! Never spray cleaning
solvent or release agent on or near a screed heating
element that is hot or being heated or on or near any
open ame or ignition source. Cleaning solvent and
release agent could ignite causing serious personal
injury.
NOTE: When using spray down, consider the
environment and do not allow cleaning solvent to
run onto the ground.
Screed extension double adjustment
1. Spray down the screed and then heat up the
screed.
2. There are three adjusters in each extension. The
two covered adjusters at each end of the screed
extensions are for vertical adjustment.
12 2
Mat Texture Double Adjuster
Figure 6-21
1 – Vertical Adjuster
2 – Extension Angle of Attack (AOA) Adjuster
3. Turning the adjusters counterclockwise (CCW) will
increase the pressure on the back of the extension.
Turning the adjusters clockwise (CW) will decrease
the pressure on the back of the extension.
NOTE: Increasing the pressure on the back of the
extensionwillgiveyouasmoother,slickernish.
Decreasing the pressure will give you a coarser
nish.Puttingtoomuchpressureontheback
of the extension will take the weight off of the
screed wearplate and will cause poor material
compacting,resultinginapoornishinthe
middle of the main screed.
NOTE: Vertical Adjusters are preset by dealer and
should not need adjustment.
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