July 15, 2014
In the newsletter Webb advises the consequences of not following this procedure can damage both the hub and drum resulting in premature failures.
The newsletter explains how the hub is to be rotated with a brake drum pilot in the 12 o’clock position with proper stud tightening procedure and torque values outlined ensuring that the total indicated run out (TIR) of the drum braking surface to the axle center line does not exceed .020 in. Webb says the newsletter is an excellent training resource for new technicians as well as a reference tool for anyone responsible for wheel-end installations.
To download a PDF of the entire newsletter, go to www.webboenewsletter.com.