Brake Maintenance

Best Practices to Keep Your Brakes in Good Condition

Air Systems
Ensure your brake system is well-balanced.
Chambers
Make sure your push rod is even on all chambers. To help, cut the push rod to the appropriate length.
Slack Adjuster
First, set your thorn up properly. 90 degree rules for manual apply. Also, use templates for automatic slacks (Exception: Haldex).
S-Cams
Make sure no grease is on your S-cam head. Aim for free play movement in and out, and up and down. Also, seal your installation.
Hardware Kits
Replace these completely, not only the springs.
Shoes
Do a complete replacement, not only one wheel. The minimum should be a complete axle if it's not possible to do an entire unit.
Drums
Make sure to use heavy drums for severe applications.
Lining Wear Patterns
To begin, after removing drums look at the brake shoes and lining before you remove them off the wheel - it will tell you a story.
Brake Adjustment
Jack up axles and snub up brakes, then back off ¼ to ½ turn on manuals and use templates on automatics.
Brake Lining Burnishings
Heat up the brakes until you are able to smell them. Then, allow them to cool. Do this procedure within ¼ to 1 mile. Check wheel temperature with a heat gun.

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