MODEL 330 OPERATOR'S MANUAL - Peterbilt Motors Company

Operating Instructions
Instruments and Controls
RED
CAUTION
AREA
CAUTION: Do not continue to operate with the
Air Filter Restriction Gauge reading 25 in. (start
of red area). It could lead to damage to the
engine. Inspect the filter and replace if necessary.
Holes in the paper element render an air cleaner useless and
may cause the Air Filter Restriction Gauge to give a false
reading, even if the element is clogged. Replace the element
if it is damaged. See page 170 for information on Air Filter
Replacement.
Air Filter Restriction Indicator
Air Filter Restriction Indicator (option)
02583
This gauge indicates the condition of the engine air cleaner
and is measured by inches of water. A clean filter should register
7 in. of water and a filter whose life is over will register
approximately 25 in.
Headlight Switch
The headlights are controlled by a toggle
switch on the left instrument panel. See
page 16. When the headlights are ON,
the dash lights, side, and tail lamps are
also on.
For High Beam operation see page 52.
Model 330 PB1318 3/01 – 29 –