Can you adjust automatic slack adjusters?
Because properly installed, operating, and lubricated automatic slack adjusters should never need adjusting after the initial setup, aside from brake relining, Bendix also emphasizes that an out-of-adjustment ASA should never simply be manually adjusted to correct an out-of adjustment brake stroke.
What size are slack adjusters?
Features and Benefits: Slack adjusters for Haldex, Bendix and Meritor Air Brake Systems. Meritor Slack Adjuster has 5/16″ ratchet size with double square offset reversible wrench.
What is a slack adjuster wrench?
This tool is used for brake adjustment on heavy-duty trucks equipped with Haldex slack adjusters. The tool is a wrench with an extra long handle and a 7/16 1/2 SH wheel. The extra long handle makes the wrench comfortable when doing the job of overcoming the anti-reverse mechanism (22-25 lbs./ft.).
How often should you grease automatic slack adjusters?
Every six months or 50,000 miles, grease the slack adjuster using an approved grease. The adjusters have a grease fitting to allow lubrication during normal chassis servicing.
When should you manually adjust an automatic slack adjuster?
It adjusts and takes up the slack in the stroke as the friction surfaces wear away. In a “normal” U.S. highway environment a manual slack adjuster would probably need adjustment approximately every 10,000 miles.
How do you measure a slack adjuster?
With brakes released, measure from the face of the chamber to the center of the clevis pin. Use a lever to measure the movement of the slack adjuster until the brake shoes contact the drum (See fig. 2). The difference between the released and applied measurements is the free stroke.
How do you remove a slack adjuster?
REMOVE SLACK ADJUSTER. Rotate the manual-adjusting bolt counterclockwise (or clockwise with ArvinMeritor products) to back off the slack adjuster so it separates from the clevis. Use an impact wrench, because this task will destroy the internal clutch mechanism found in most automatic slacks.