Oil Pressure Switch - Toro Groundsmaster 360 Service Manual

Oil Pressure Switch

The engine oil pressure switch is located on the engine
near the oil filter (Fig.70). The oil pressure switch is a
normally closed switch that opens with pressure.
The oil pressure switch should open at approximately 8
PSI (0.56 kg/cm ).
2
2
On machines with 4WD, the TEC controller monitors the
operation of the oil pressure switch. On these machines,
the switch and its circuit wiring should be tested as a
controller input with the Diagnostic Display (see Special
Tools and Troubleshooting in this chapter).
If low engine oil pressure allowed the oil pressure switch
1
to close during engine operation, the Diagnostic light
can be used to identify the fault (see Diagnostic Light in
the Troubleshooting section of this chapter).
Testing
Figure 70
1. Oil filter 2. Oil pressure switch
NOTE: Refer to Kubota Workshop Manual, Diesel En-
gine, 05--E3B Series at the end of Chapter 3 -- Kubota
Diesel Engine for information regarding engine lubrica-
tion system and testing.
1. Turn the ignition switch to the RUN position. The oil
pressure indicator light on the control panel should be
illuminated.
2. If the indicator light is not illuminated, open hood to
gain access to engine.
3. Locate oil pressure switch on engine and disconnect
the wire harness connector from the switch.
4. With the ignition switch in the RUN position, ground
the disconnected wire to the engine block.
5. If the indicator light comes on, the oil pressure switch
is faulty. Replace oil pressure switch.
6. If the indicator light does not come on after step 5,
check the oil pressure indicator light and circuit wiring
(see Indicator Lights in this section).
7. After testing is completed, connect the wire harness
connector to the oil pressure switch. Lower and secure
hood.
Groundsmaster 360 Page 5 - - 51 Electrical System