Komatsu Galeo PC138US-8 Shop Manual page 310

SEN02553-01
Coolant temperature sensor
1. Connector
2. Sensor
3. O-ring
Function
Installed in the water pump. Detects the temperature change and outputs signal as a resistance change.
q
Crankshaft speed sensor
Camshaft speed sensor
1. Connector
2. Sensor
3. O-ring
Function
The crankshaft speed sensor is installed in the gear of the flywheel, and the camshaft speed sensor is
q
installed in the gear of the camshaft. Each of the sensors outputs a pulse voltage according to the gear
rotation.
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10 Structure, function and maintenance standard
PC138US, USLC-8