Peterbilt Medium Duty Truck Owner's Manual - Peterbilt Motors

INSTRUMENTS AND CONTROLS
19. Engine, Overspeed
Illuminates when engine RPM is exceeded.
20. Engine, Retarder (Brake)
Illuminates when the engine retarder (compression
brake or exhaust brake) switch is
turned on. (Engine retarders are an option.)
21. Engine, Stop Engine
Illuminates and an audible alarm tone will
sound when a major engine system problem
exists.
WARNING! This should be considered
an emergency. You should stop the vehicle
as safely as possible and turn OFF
the ignition. The vehicle must be serviced
and the problem corrected before
driving again. Failure to do so may cause
severe engine damage or cause an accident
involving death or personal injury.
CONTROLS AND DISPLAYS
22. Engine, Wait To Start
Illuminates when engine grid heater is on
(PACCAR PX-6 and PX-8).
23. Fifth Wheel, King Pin Lock
Illuminates when air actuated fifth wheel King
Pin is unlocked.
24. Fifth Wheel, Slide Unlocked
Illuminates and an audible warning tone will
sound when the air operated sliding fifth
wheel switch is on, thus unlocking the sliding
fifth wheel. The light and an audible warning
tone should NOT be considered an emergency
but simply as a reminder to turn off the
switch to lock the sliding fifth wheel before
driving. This switch should not be operated
while driving. (Sliding fifth wheels are an
option).
– 28 – Y53-6027 Medium Duty (R05/09)