Ford 2013 F-650 Owner's Manual page 293

292
Cam Brakes - Automatic Slack Adjusters
WARNING: Do not manually adjust the automatic slack adjusters
to correct excessive push rod stroke as it may result in reduced
brake effectiveness and a vehicle crash. Excessive push rod stroke
indicates that a problem exists with the automatic adjuster, with the
installation of the adjuster, or with foundation brake components that
manual adjustment does not remedy. Seek service from a qualified
facility for excessive push rod stroke.
Inspect standard air brakes equipped with automatic slack adjusters for
proper brake adjustment as listed in the maintenance schedule charts.
However, more frequent inspection is required if your vehicle's brakes
are subjected to heavy use or adverse operating conditions such as:
• Frequent brake applications while fully loaded.
• Operation on hilly or mountainous terrain.
• Frequent operation on dirt, gravel or mud.
Some aftermarket brake linings also require more frequent inspections.
2013 F-650/750 (f67)
Owners Guide gf, 2nd Printing, March 2013
USA (fus)
Scheduled Maintenance