When extra wide paving is done, the spreader screws
must be extended to match the extensions added to the
screed. Screw extensions are 12" Long (See Figure 7)
and each includes a drive shaft extension for coupling
purposes.
Retaining Plate used with Screed Extension
Figure 9
Screw Conveyor Extensions (Uncoupled)
Figure 7
EXTENDING SPREADER SCREWS
When screed extensions are added and screws
are to be extended, proceed as follows:
1. Remove nut and bolt which holds agitator section
Paving with Extensions - No Retaining Plate
and slide agitator off the shaft.
Figure 10
2. Assemble as many screw extensions as needed.
(See Figures 7 and 8).
3. Slide the socket end of the new assembly onto the
drive shaft and install the bolt and nut. Always use
hardened bolts which have maximum shear strength.
4. Install the agitator on the end of the outer extension
shaft.
MATERIAL RETAINING PLATE
When screed extensions are added a Retaining Plate
should be attached to the pull arm to prevent material
from spilling forward. With the retaining plate placed as
close to the screw as possible, material moves outward to
the end of the screw and the material depth sensor works
more effectively to keep just the right amount of material
ahead of the screed. (See Figure 9).
Paving with Extensions and Retaining Plate
Figure 11
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