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Peterbilt 387 - Page 41

Peterbilt 387
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PART 4: CONTROLS AND DISPLAYS GAUGES
(R10/06) Y53-6007 – 43 –
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.
Primary And Secondary Air Pressure
Gauges (Air Reservoir)
These air pressure gauges indicate the amount of air
pressure in the brake system in pounds per square inch
(psi).
The primary gauge shows the front reservoir air pressure:
.
The secondary gauge shows rear reservoir pressure.
1146
1146

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