BRACKET AS 2292174 - Caterpillar

Illustration 1 g01014007
(1) Magnet assembly (2) Up or down switch for the truck body or water tankDown switch (2) for the truck body or the water tank is located on a bracket on the rear frame. Magnet assembly (1) is connected to the truck body or the water tank. When the truck body or the water tank is raised, down switch (2) for the truck body or the water tank sends a signal to the Chassis Electronic Control Module (ECM). The signal indicates that the truck body or the water tank is in the UP position. When the truck body or the water tank is lowered, magnet assembly (1) will pass in front of down switch (2) for the truck body or the water tank and a signal will be sent to the Chassis (ECM). This signal indicates that the truck body or the water tank is DOWN. The adjustment of the up or down switch (2) for the truck body or the water tank is very important. Refer to the Hydraulic System Testing and Adjusting, "Electronic Control (Body Down or Up Switch) - Adjust" for the proper adjustment procedure.Up or down switch (2) for the truck body or the water tank will limit the top gear that is being used while the truck body or the water tank is in the UP position. The Chassis (ECM) comes from the factory with the top gear value that is set to FIRST gear. The transmission will not shift past FIRST gear until the truck body or the water tank is down. The top gear value is programmable by utilizing the Electronic Technician (ET). The top gear value can be changed to SECOND gear, THIRD gear, or FOURTH gear.The signal from up or down switch (2) for the truck body or the water tank is also used to control the SNUB position of the hoist control valve. The Chassis (ECM) will signal the hoist proportioning solenoids to move the hoist control valve to the SNUB position when the truck body or the water tank that is being lowered nears the frame. The speed in FLOAT is reduced in the SNUB position in order to prevent the truck body or the water tank from contacting the frame too hard.The signal from up or down switch (2) for the truck body or the water tank is used to provide warnings to the operator when the truck is moving with the truck body or the water tank in the UP position.