ENGINE AR-COMPLETE 1375422 - Caterpillar

Illustration 1 g03810149
Section Information
Emulsion spray system automates the addition of metered emulsion to the mixing chamber. This action allows the proper measured amount of emulsion to be mixed with the materials in the chamber. The emulsion system provides a variable volume capacity of 114 to 946 L/min (30 to 250 US gpm). The small, medium, and large nozzle flow ranges are as follows:
Small Nozzle: 113 L/min (30 U.S gpm) to 208 L/min (55 U.S gpm).
Medium Nozzle: 170 L/min (45 U.S gpm) to 416 L/min (110 US gpm).
Large Nozzle: 75 L/min (284 U.S gpm) to 946 L/min (250 US gpm). Note: Use the correct nozzles for the flow rate. The use of incorrect nozzle sizes or plugged nozzles can result in an inconsistent flow rate. Incorrectly sized, or plugged nozzles can also cause high operating pressures or damage the pump vanes.The emulsion system is supported by two subsystems: the hydrostatic drive subsystem and the electronic control subsystem.The emulsion system delivers emulsion from the supply truck to the nozzles. Unused emulsion can be recirculated through the system or returned to the supply truck. The position of the spray bar cylinder determines if the emulsion is directed out the nozzles or into the return line.
Illustration 2 g03811820
Right Side of Machine
(1) Recirculation valve
(2) Return line
(3) Inlet valve
(4) Strainer assembly
(5) Drain valve The emulsion system components are located on the right side of the machine. When the emulsion spray pump is operating, emulsion is drawn from the supply truck through the inlet valve (3) and strainer assembly (4). Strainer assembly (4) should be serviced daily. A plugged strainer can cause erratic flow and/or pump cavitation. Drain valve (5) can be used to drain emulsion from the strainer assemblyIf the emulsion spray nozzles are closed, the return valve sends emulsion to the recirculation valve (1). The recirculation valve can be set to direct the unused emulsion to the inlet side of the pump. The valve can also direct unused emulsion back to the supply truck through return line (2).Note: The return function in the emulsion system is usually used with emulsion mixtures which may solidify if allowed to cool.Recirculation valve (1) is marked with an arrow to indicate the direction of flow. When the arrow is perpendicular to return line (2), flow is directed back into strainer assembly (4). In this case , flow is directed back into the inlet side of the pump. When the arrow is parallel to the return line, flow is directed to back to the supply truck.Note: When recirculation valve (1) is set to the RETURN position, a return hose must be connected from return line (2) to the supply truck.