Air Application Gauge
PART 4: CONTROLS AND DISPLAYS
Tachometer
11244B
Your tachometer measures the engine speed in revolu-
tions- per-minute (RPM). Watching your tachometer is im-
portant to driving ef
fi
ciently. It will let you match driving
speed and gear selection to the operating range of your
engine. If your engine speed gets too high, you can select
a higher gear to lower the RPM. If your engine speed drops
too low, you can select a lower gear to raise the RPM.
Air Application Gauge
11458
This gauge will show you how much air pressure is being
applied from your foot brake valve or trailer brake hand
valve.
– 46 –
Y53-6015
R(08/07)
Summary of Contents for Peterbilt 320
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Page 210: ...PART 11 SUBJECT INDEX Windshield Washer Reservoir 29 206 Y53 6015 R 08 07 ...
Page 212: ...Peterbilt Motors Company P O Box 90208 Denton Texas 76202 ...