(6) When controlling the paver, the operator should be careful not to push either right or left toggle
switch all the way forward. This would apply the brakes and cause over correction and an impression on the
finished mat. Quickly dis-engage and re-engage track clutches as many times as becomes necessary to
correct the direction of paver movement.
NOTE: One of the most common mistakes made by a new operator is over-
control in steering. A quick snap of one switch to OFF is all that is necessary to
correct the direction of the paver.
(7) IMPORTANT: Clutches should be inspected after the first week of operation and every 30 days thereafter.
Selecting Proper Operating Speeds
The paver should not travel any faster than necessary. The operation should run smooth at all times.
Even though the paver will travel at speeds that exceed the production of the mixing plant, the operator will not
gain by running at the faster speed. Always operate at a constant speed, and let the production of the mixing
plant determine this speed.
If necessary higher paver speeds can be used to expedite the unloading of a backlog of trucks which may
be caused when the paver is making a joint or similar time-consuming operations.
(1) Operating Speed Ranges (Refer to Material Feed, Section 6)
When operating at high speed ranges, it may be necessary to adjust the rheostat controls for the screed
vibrators; increasing the amplitude of the two outside, middle, or all four vibrators.
Correct operating speed of paver should be selected to handle the output from asphalt plant without long
delays between trucks
(2) Job specifications may determine the paver speed.
Laying a Wide Mat
When the paver is required to lay mats of extreme widths or an extra deep mat, the following adjustments
and changes must be made.
(1) Make sure screed plate extensions and screws are assembled according to recommended
procedure. See Installation Of Attachments, Section 7.
(2) Measure screw conveyor diameter, and weld screw up to its original diameter (14" Standard Auger)
if necessary. Also, check paddles on screw conveyor (14" Diameter standard, and reweld if necessary.
(3) Check to make sure strike-offs are positioned correctly on front of screed plate. THIS IS VERY
IMPORTANT. (See Screed Section 7.)
(4) Usually it is necessary to lower the gates to feed more material to the ends of the screed.
(5) Install material retaining plates, so that spreading screws readily move the mix to the outer ends of
screed. This keeps a full supply in front of the screed extensions, rather than letting it flow away from in front
of the screws. Also, with retainer plates it is possible to maintain a low but uniform level of material in the
moldboard area, and consequently better movement off the moldboard into the screws and better operation of
the automatic depth sensors.
CAUTION: Avoid too much material in spreader screws as excess material
will not roll off the moldboard efficiently. Adjust depth control feelers to
maintain desired level of material.
CROWN ADJUSTMENT
Some of the conditions that can be corrected by proper front crown adjustments are loose edges with
sandy streaks in the center of the mat, or tight edges with a marking in the center of the mat. (See Figure 5)
Loose mat edges for approximately the last 18" on each side, and a tight sandy center strip indicates too
much crown. To correct this condition, back off the front crown adjusting nut until the front crown is only 1/16"
greater than the rear crown or less. Then
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