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PLUG 9S8518 - Caterpillar



9S8518 PLUG Caterpillar parts PLUG
Rating:
61
Alternative (cross code) number:
CA9S8518
9S-8518
9S8518
Caterpillar 9S8518 PLUG
Weight: 0.01 pounds 0 kg.

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Switches
Travel Direction Switch
Illustration 5 g06268133The FNR switch is used to aid directional control by allowing the operator to control the direction of the machine from a rocker switch that is located on the implement control handle. When the column mounted shifter is placed in the neutral position, the remote FNR switch is used to control the direction of the machine. If the remote FNR switch is in the neutral position, the column-mounted shifter can be used to control the direction of the machine. In both cases, the machine speed is controlled by the twist grip on the column-mounted shifter. If neither the shift handle lever or the FNR switch is in the neutral position, the transmission will be neutralized. Neutralizer Override Switch
Illustration 6 g03015758The transmission neutralizer override switch is the only input to the transmission neutralizer control. The transmission neutralizer control will remember the latest state or will default to enabled if unknown. The indicator for the transmission neutralizer is not illuminated when the transmission neutralizer control is enabled.Pressure Switches
Transmission Oil Filter Bypass Switch
Illustration 7 g03359407The bypass switch is a pressure switch that shows whether the filter is plugged and the filter is being bypassed. This switch is normally open. When electrical power is applied to the switch, the switch closes. When the filter becomes plugged, the pressure of the oil opens the switch which allows the oil to bypass the filter.This switch is one of the inputs that is used in order to drive the "system indicator" in the instrument cluster. This indicator is turned ON when the "Transmission oil filter bypass" switch is in the closed position and the transmission oil temperature is greater than 52° C (126° F) with the engine running.Keyswitch
Illustration 8 g03096077The keyswitch is an input to the ECM. Power is supplied to the ECM from the keyswitch. Power is supplied to the ECM from the keyswitch when the keyswitch is in the START or RUN position.The keyswitch is a switch to battery input and is active when the keyswitch is in the START or RUN position. When the keyswitch is turned to START, the ECM receives a + battery signal from the keyswitch. If all start interlocks are satisfied, the ECM will send a + battery signal to the start relay to start the engine.Outputs
The ECMs respond to decisions by sending electrical signals to the outputs. The outputs can create an action or the outputs can provide information to the operator or the service technician.Solenoids
Transmission Clutch Solenoids
Illustration 9 g01444279The solenoids engage the speed clutches and direction clutches in the transmission.Note: Do not apply direct battery voltage to the solenoids. The solenoids are not designed for operating with 24 VDC.Torque Converter Lockup Clutch Solenoid
Illustration 10 g01444286The solenoid functions as a proportional valve. The solenoid modulates hydraulic pressure to the lockup clutch. The ECM increases the PWM Driver to the solenoid valve and the hydraulic pressure at the lockup clutch is increased. The ECM decreases the PWM Driver to the solenoid valve and the hydraulic pressure at the lockup clutch


Parts plug Caterpillar catalog:

9S8519 PLUG
Caterpillar
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