Ford F-650 2008 User Manual page 99

Cam brakes - automatic slack adjusters
Standard air brakes (cam) are
equipped with automatic brake
adjusters. Automatic adjustment
occurs during brake applications.
Inspect brakes for proper
adjustment at the intervals listed in
the Scheduled Maintenance Guide
chapter.
Do not manually adjust the
automatic slack adjusters to
correct excessive pushrod stroke
as it may result in reduced brake
effectiveness and a vehicle crash.
Excessive pushrod stroke
indicates that a problem exists
with the automatic adjuster, with
the installation of the adjuster, or
with foundation brake components
that manual adjustment will not
remedy. Seek service from a
qualified facility for excessive
pushrod stroke.
Emergency air brake
All vehicles are equipped with a dual brake system. In the unlikely event
of a failure of one system, the second system will function for emergency
stopping. These systems are all controlled by the brake pedal in the
same manner as for normal stops.
Do not continue to operate the vehicle with a failure of one of
the brake systems. Take the vehicle to your dealer for service
immediately.
Air brake reservoir draining
Failure to drain air brake reservoirs can result in a reduction or
loss of braking ability due to fluid accumulation in the reservoir
and/or possible freeze-up during cold weather.
2008 F-650/750 (f67)
Supplement
Driving
99