moved to the BRAKE position and the paver turns sharply. If both switches are moved to the BRAKE position
the paver stops instantly. In its center position the switch is OFF. Each switch has three positions: TRAVEL-
OFF-BRAKE.
6. Screed Lift Switch: Raises, holds, or lowers screed assembly by hydraulic power. In the center
position, the screed position is held hydraulically locked so that no downward creep can occur. The switch is
three position; UP-HOLD-DOWN with spring return to HOLD.
7. Feed Switches (Right and Left Hand): These two switches individually start and stop each pair of
combined slat and screw conveyors which feed material ahead of each half of the screed. Conveyor operation
can be controlled manually with the operator observing the amount of feed, or it can be done automatically
using two auxiliary "feeler switches" which are operated by material build-up near the ends of the screws. Each
type of operation engages or dis-engages the electric clutches which drive the conveyors. Each switch has
three positions; MANUAL-OFF-AUTOMATIC.
Adjustable Material Depth Control Switch
with Feeler Arm - R.H. Assembly Shown
Figure 3
NOTE: The conveyors will not run unless the paver transmission shift lever for travel direction .is in the
FORWARD position. (See Figure 4) A limit switch actuated by the transmission opens the conveyor electrical
circuit when the paver is shifted for reverse travel.
Main Clutch and Transmission Shift Levers
Figure 4
8. Hopper Wing Switch: The two hopper wings are raised or lowered by operation of this toggle switch. It
controls valves in the hydraulic system which direct the action of two hydraulic cylinders connected to the
wings. The wings are raised when material at the sides of the hopper needs to be moved toward the slat
conveyors. The switch is three-position; UP-OFF-DOWN, with spring return to off.
(NOTE: The movement of hopper wings is normally irregular because a single hydraulic pressure line
powers both cylinders and the wing offering the least resistance moves first).
9. Truck Hook Switch: Used as control switch for hydraulically powered truck hook system (when purchased).
If system is not supplied the switch is not connected.
10. Screed Heater Switches:
Three switches are used to control operation of the oil fired screed heater and oil spray-down unit which is
mounted on the screed.
The burner pump and fan motor is controlled by the burner power switch and circuit breaker on the
instrument panel, and the ground level burner switch on the screed junction box.
The selection of burner operation or oil spray for clean-up and lubrication is made by setting the 3-position
toggle switch on the side of the burner housing. The switch has three positions, OFF - BURNER - SPRAY
DOWN. It controls two solenoid operated valves in the fuel oil distribution lines.
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