Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Two Types of Slack Adjusters<br />
There are two types of slack adjusters currently<br />
in use with drum type brakes:<br />
manual adjustment<br />
automatic slack adjustment<br />
Manual adjustment must be<br />
made every day at the start<br />
of the shift. If conditions<br />
warrant, adjustment may be<br />
required more often.<br />
Pre-Trip Inspection:<br />
•Set up brakes before the start of each day’s<br />
shift.<br />
•Maximum push rod travel under a full foot<br />
valve application must not exceed 1 3/4<br />
inches.<br />
•Maximum push rod travel under pry bar<br />
pull must not exceed 3/4 of an inch.<br />
•When making a full foot valve application<br />
with engine off and park brake released, look<br />
for any large drops in air pressure as<br />
indicated on the pressure gauge.<br />
Automatic slack adjusters can<br />
be adjusted by simply making a<br />
full brake application with the<br />
foot valve. Upon release of the<br />
foot valve, the slack adjuster<br />
will automatically adjust your<br />
brakes to optimum push rod<br />
travel.<br />
50
Change language