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as a quick rise in temperature usually indicates
trouble.
Should
the needle move all the way to the right the engine should be
stopped and a check made for cause of overheating.
NOTE: Do not remove the radiator cap when engine is exces-
sively hot, do not put water in an overheated engine, and do
not run engine when indicator is above "H."
Ammeter (Battery Indicator). The Ammeter is to the left of
center near the top of the cluster (fig. 3) and indicates the
flow of current to and from the battery, except the current
taken by the starting motor. Should the ammeter show dis-
charge when the truck is being driven at medium speed, trou-
ble is indicated in the charging system and the battery will soon
become discharged.
Oil Pressure Gauge. This instrument is to the right of center
near the top of the instrument cluster (fig. 3), and indicates
whether or not the oil pump is working, but does not indicate
the amount of oil in the crankcase.
A low reading is normal at idling speeds with a warm en-
gine and light oil; however, as the engine speed is increased
the hand should register near the center of the gauge. In cold
weather (especially with heavy oil) the hand may move over
to the "60" mark at comparatively low engine speeds.
NOTE: Do not accelerate the engine excessively until the oil is
sufficiently warm to permit a lower pressure. If the gauge does
not show any pressure, stop the engine immediately and deter-
mine the cause .
.
~
Speedometer. The speedometer is located in the instrument
cluster and the hand moves across the dial indicating the
speed of the vehicle in miles-per-hour.
Odometer. The group of figures visible through the opening
just above the Chevrolet emblem on the instrument cluster is
the odometer and indicates the total mileage the truck has
been driven.
Headlight Beam Indicator. A red light in the recessed area
below the 50 mark on the speedometer lights when the head-
lights are on the upper beam .
• 5 •
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