TRACK AR 3855464 - Caterpillar

Illustration 3 g00816224
Left Hand Control Handle (1) Switch (Bottom Dump Close) (2) Switch (Horn)Switch (Bottom Dump Close)
The switch (bottom dump close) is an input of the machine ECM. The switch is connected to connector contact J1-24. The switch allows the operator to close the bottom dump. The contacts of the switch are closed to ground when the operator squeezes the trigger. This causes the machine ECM to energize the bucket dump close solenoid.Switch (Horn)
The horn switch is an input of the machine ECM. The switch is connected to connector contact J1-25. The switch allows the operator to sound the horn. The contacts of the switch are closed to ground when the operator presses the button. This causes the machine ECM to energize the horn solenoid.Switch (Automatic Engine Speed Control)
Illustration 4 g00673899
Switch (Automatic Engine Speed Control)The Switch (Automatic Engine Speed Control) tells the machine ECM the status of the "Automatic Engine Speed Control" function. This switch is read by the machine ECM and the information is sent to the engine ECM via the CAT data link.Pressure Switches
Illustration 5 g00816364
Pressure Switch (Swing)Pressure Switch (Implement)Pressure Switch (Boom Up)Pressure Switch (Swing)
The swing pressure switch tells the ECM that the operator wants to swing the machine. The ECM uses the swing pressure switch in order to enable several machine functions. The ECM uses the swing pressure switch in order to disable several machine functions. The following functions are carried out: swing brake and the AESC signal.When the operator initiates a swing function the pressure in the swing hydraulic system increases. The hydraulic pressure opens the swing pressure switch. The ECM is grounded when there is no pressure in the swing hydraulic system. The swing pressure switch is on the pilot manifold.Pressure Switch (Implement)
The implement pressure switch tells the ECM that the operator needs to move: boom, bucket and stick. The ECM uses the implement pressure signal in order to enable several machine functions. The ECM uses the implement pressure signal in order to disable several machine functions. The following functions are carried out: swing brake, high pressure control and AESC signal .The pressure in the implement hydraulic system increases when the following functions are initiated: boom, bucket and stick. The hydraulic pressure opens the implement pressure switch. When there is no pressure in the implement hydraulic system the implement pressure switch closes. The ECM input is grounded. The implement pressure switch is located in the main implement valve at the center of the machine. Pressure Switch (Boom Up)
Illustration 6 g00869630
The pressure switch (boom up) is an input of the machine ECM. The switch is connected to connector contact J1-22. The switch is used to control the speed of the hydraulic demand fan and the engine's demand fan. The engine's demand fan is controlled by the engine ECM. The engine ECM receives the status of the switch via the CATdata link. The speed of the fans is determined by the status of the switch. The status of the switch is open or closed. The status of the switch