143H and 163H Motor Graders All Wheel Drive Caterpillar


Electrical Schematic

Usage:

143H APN



Illustration 1g00928449

Electrical schematic for the all wheel drive system

(1) All wheel drive ECM

(2) Switch (AWD mode switch)

(3) Speed sensor (engine)

(4) Position sensor (AWD torque lever)

(5) Speed sensor (ground)

(6) Pressure sensor (AWD pump)

(7) Solenoid (AWD pump) (forward displacement)

(8) Solenoid (AWD pump) (reverse displacement)

(9) Indicator lamp (AWD)

(10) Solenoid (AWD pump pressure)

(11) Solenoid (charge)

(12) Solenoid (drive) (freewheel)

(13) Solenoid (motor displacement)

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