BRACKET AS 3725350 - Caterpillar

Make sure the fuel control valves are closed before moving the burner fuel pump switch to the "SPRAYDOWN" position.
When the burner fuel pump switch is in the "SPRAYDOWN" position, power is sent to tractor fuel pump relay (6). The burner fuel pump will remain operating, sending fuel to the two spraydown quick disconnects located between the fuel control valves.Feeder Controls
Standard Feeder Controls
Feeder Electrical Schematic (Left Side)
(1) Feeder switch. (2) EDC (Feeder pump). (3) Feeder gain switch.The electrical controls on the screed control two functions of the tractor feeder systems. Controls on the screed electrically adjust the sensitivity of the feeder gain system and provide control of the feeders.
Feeder Control Sensor Location
(4) Feeder control sensor.
Main Control Box (Right Side)
(3) Feeder gain switch.Feeder control sensors (4), mounted on both sides of the tractor, control the swashplate angle of the feeder pumps and feeder gain switches (3) control the operational mode of the feeder control sensors. Each feeder gain switch sets the operational mode of the feeder control sensor at the same end of the screed.To determine the operational mode of the feeder control sensor, the position of the feeder gain switch configures a number of resistors into a network. This network of resistors determines how far the sensor arm must move before the feeder control sensor begins changing the feeder pump swashplate.
Feeder Control Sensor Positions
(4) Feeder control sensor.The operation range of feeder control sensor is from a vertical position to a 45 degree angle. Full current flows to the EDC on the feeder pump when the paddle on the feeder control sensor is vertical. Minimum or "threshold" current flows to the EDC when the paddle is at 45 degrees, and the feeder system stops. The point where full current begins to reduce is controlled by feeder gain switch (3).When laying a thin mat, material requirement is reduced and the feeder gain switch should be in the "LOW" position. With the feeder gain switches in the "LOW" position, when the material moves the paddle from the vertical position the speed of