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Peterbilt 579 - Steering Wheel Controls (Optional)

Peterbilt 579
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SWITCHES
3. Trailer Brake Hand Valve
This hand
valve, mounted on the
steering wheel column, provides air
pressure to apply the trailer brakes
only. It operates independently of
the foot
treadle valve. See Using the
Brake System
on page 4-20, for more
instructions on
proper use of the Trailer
Brake Hand Valve.
Steering Wheel Controls
(Optional)
CAUTION
Under no circumstances should you
attempt to service the steering wheel,
clockspring, or any of the electrical
wiring in the multiplex system, or any
steering components (steering col
-
umn, steering driveline or steering
gear). Tampering with these com
-
ponents may result in an inoperable
multiplex system.
This vehicle may be equipped with an
optional steering wheel with audio and
cruise control button mounted on the
spokes of the steering wheel.
1. Left Switch Pod
2. Horn
3. Right Switch Pod
3
(04/13) Y53-6047–2C 3-73

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