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How It Works
When the water temperature reaches an excessive
operating temperature the switch will close internally
and ground the high temperature audible alarm. This
completes the alarm circuit and the alarm sounds (Fig.
670).
Fig 670
Testing
It is not practical to test the switch in a shop environ-
ment. The temperature switch closes at 230º F (110º C).
Z580/Z593/Z595 Diesel Service Manual
Oil Pressure Switch
Purpose
The oil pressure switch completes the circuit that
activates the hour meter and the radiator fan relay.
Location
The oil pressure switch is located on the right side of the
engine under the alternator (Fig. 671).
PICT-4161a
ELECTRICAL
Fig 671
PICT-4164
6
6-13
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