Your Engine Distributors, Inc. (EDI) Powered Equipment will have been fitted with
instruments selected by the manufacturer. The types of instruments most likely to
be encountered are detailed here. A typical instrument panel is shown below.
This instrument registers the charging current which is being passed to the battery
from the alternator. It also registers a discharge equivalent to the amount of current
being used by the electrical equipment when the alternator is not charging.
Battery Condition Indicator (Where Fitted)
This is sometimes fitted instead of an ammeter and measures the battery voltage
thus indicating the state of charge of the battery.
Tachometer (Where Fitted)
The tachometer indicates the actual engine running speed in crankshaft
revolutions per minute. Standard output from the ECU is 2 pulses per rev.
This instrument records the number of hours of operation which the engine has
completed at the rated rpm. It is frequently combined with the tachometer and is
used to determine when an engine service operation is required. If no hourmeter is
fitted, a log should be kept.
Oil Pressure Gauge (Where Fitted)
The oil pressure gauge registers the lubricating system pressure in bar (kgf/cm
2
or
Ibf/in
2
) and should be frequently observed to ensure that the system is functioning
correctly.
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