User Manual

ENGINE BRAKE SYSTEM
PERSONAL INJURY
Failure to keep the vehicle within
safe control speed limits while
descending a grade may result
in loss of vehicle control, which
could cause personal injury.
NOTICE:
Failure to keep the vehicle within
safe control speed limits while
descending a grade may result in
vehicle or property damage o r both.
3. When d escending a grade, do
not exceed the safe control speed
of your vehicle. Example: You
could descend a 6% grade under
control only at 10 m ph (16 kph)
without an engine brake, but at
25 mph (40 kph) w ith an engine
brake. You could not descend
that same hill at 50 mph (80
kph) and still expect to remain
under control. Know how much
slowing power your eng ine brake
can provide. Know your engin e
brake system before climbing
hills and do not exceed a safe
control speed.
4. Check your prog ressive braking
switch often for proper position,
since road conditions can chang e
quickly. Never skip a step when
operating the pro gressive braking
switch. Always go from OFF
to LOW a nd then to a higher
position when on slippery roads.
Driving on Wet or Slippery
Pavement
Do not attempt to use the engine brake
system o n wet or slippery roads until
you hav e some exp erience with it on
dry pavement.
NOTE:
On single t rai lers or combinations,
a light air application of the trailer
brakes may be desirable to h elp
keep the trailer stretched out. Follow
the ma nufacturer's recommended
operating procedure when using your
trailer brakes.
On wet or slippery pavement, start
with the master s witch in the OFF
position and use the gear you would
normally use under these conditions.
44 All information subject to change without notice. (Rev. 01/04)
DDC-SVC-MAN-0058 Copyright © 2004 DETROIT DIESEL CORPORATION