Chevrolet 1973 Monte Carlo Owner's Manual page 32

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AMPS
Oil Pressure Gauge
This optional gauge indicates the
pressure at which oil is being de-
livered to the various parts of the
engine requiting lubriCation. Pres-
sures registered by the gauge may
vary according to outside air tem-
peratures or weight of oil being
Ammeter
The optional ammeter indicates
whether the battery is being
charged or discharged. The Delco-
tron charging system is equipped
with a regulator which controls the
charge according to battery require-
ments. When the Delcotron gen-
30
used. Oil pressure of a cold engine
being operated at a given speed will
be somewhat higher than when the
engine is at normal operating tem-
perature at the same speed. Pro-
longed high speed operation on a
hot day at the given speed will re-
sult in somewhat lower oil pressure
readings.
era tor is supplying more than the
current demand, the ammeter will
indicate a charging rate.
If
the cur-
rent demand is more than the Del-
cotron output, a discharge will be
indicated. With the battery fully
charged, the charging rate will be
low, thus giving an indication of
battery condition.