Komatsu Galeo PC138US-8 Shop Manual page 291

10 Structure, function and maintenance standard
PPC oil pressure switch
1. Plug
2. Switch
3. Connector
Specifications
Contact type: Normal open
Operating pressure to make contact point ON:
490 ± 98.1 kPa {5.0 ± 1.0 kg/cm
Operating pressure to break contact point OFF:
294 ± 49.0 kPa {3.0 ± 0.5 kg/cm
Function
Installed (8 places) in the connecting valve.
q
Detects the PPC oil pressure when each actu-
ator is operated, and turns the switch "ON"
when the pressure exceeds the specified
value.
PC138US, USLC-8
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