ASA

Automatic Slack Adjuster

Applications

Bus and Coach Construction and Utility Fire and Rescue Trailer Truck Defense

Product Availability

Asia Pacific Europe North America South America

Automatic slack adjuster (ASA) for on-highway, linehaul and vocational applications delivers shorter stopping distances and offers longer lining life. Built to be robust and reliable, the industry's lightest-weight automatic slack adjuster optimizes brake performance by increasing payload capacity and enhancing camshaft bracket life. It is the industry's only ASA that adjusts on chamber stroke and reduces maintenance costs by eliminating the need for frequent under-the-truck brake adjustments.

Features & Benefits

  • Pull-pawl design with fewer moving parts to simplify service and enhance durability and reliability
  • Fully sealed design resists contamination for longer component life
  • Ratchet-type adjuster mechanism minimizes internal wear and maximizes reliability
  • Self-contained design simplifies installation and eliminates need for special grounding straps
  Front Steer Axle Drive and Trailer Axle
Slack Length (inches) 5.0, 5.5, 6.0 5.0, 5.5, 6.0, 6.5, 7.0
Arm Configurations Straight 0.625” offset clevis Straight
Camshaft Spline Size and No. 1.25-24 1.25-10 1.50-10 1.50-28 1.50-10 1.50-28 1.625-37
Clevis Thread .50”-20 for chamber type 9, 12, 16 .625”-18 for 20, and larger chambers .625”-18 for type 20, 24, 30, 36 chambers
Title Action
Meritor Automatic Slack Adjuster View brochure
Meritor Brakes - Europe View brochure
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