User Manual

WARNING
Using an engine retarder can
cause
a wheel lockup. The
trailer is not loading the tires
enough to give the traction you
may need. When you are bob-
tail or unloaded, you can have
a serious accident if your
wheels lock suddenly during
braking. You could be killed or
injured. DO NOT use your re-
tarder when you are driving
bobtail or with an unloaded
trailer.
• Make sure the brake is OFF before
starting the engine.
• After the engine is started, warmed
up, and you are ready to get under
way, turn the exhaust brake switch
ON for added braking effect.
WARNING
DO NOT use the vehicle’s en-
gine
compression brake or ex-
haust brake in any situation
that requires an immediate
stop and/or in situations of
poor
traction (such as wet, icy,
or snow covered roads). Trying
to use the engine compression
brake or exhaust brake instead
of the service brakes may
cause a loss of vehicle control,
which may result in an acci-
dent involving death or person-
al injury.
If your vehicle is equipped with ABS, the
operation of the exhaust brake (if turned
ON) will be controlled by the ABS. For
further details on how to use the exhaust
brake, see the exhaust brake
manufacturers Owner's Manual.
Engine Brakes
Engine Brake ON/OFF Switch
Engine Brake Level Switch
Two switches control your vehicle's engine
brake. Engine Brake ON/OFF turns on or
of
f engine braking, and Engine Brake Level
controls the amount of engine braking that
occurs when the engine brake is active.
Both switches are located in the right-hand
switch panel. With the engine brake switch
ON, the engine brake automatically creates
its braking effect when you remove your
foot from the accelerator pedal and
becomes active.
When engine braking is ON, the three-
position Engine Brake Level switch
determines the amount of engine braking
that will occur when activated: Low,
Medium, or High.
DRIVING - Retarders
146 Y53-6113-1A1 (11/20)
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