ELECTRICAL
6-14 Z580/Z593/Z595 Diesel Service Manual
6
High Temperature & Glow Plug Light
Cluster
How It Works
Testing
Purpose
Location
When the engine oil pressure builds the switch closes
to complete the circuit for both the hour meter and the
cooling fan relay (Fig. 672).
There are two purposes for this light cluster:
1. In addition to the high temperature audible alarm,
there is an accompanying light for visual represent-
ation of high temperature. It is a red LED light.
2. The glow plug indicator light turns on when the glow
plug switch is engaged. It is an amber light.
Fig 672 PICT-4165a
The high temperature and glow plug light cluster is
located on the control panel on the left side of the
operator position (Fig. 673).
The switch can be tested with an ohmmeter. There
should be no continuity between the wire terminal and
ground with the engine not running. There should be
continuity between the wire terminal and ground when
the engine is running.
Fig 673 PICT-4133
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