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Automann · Brakes & Wheel End
139.2830
In stock · ships from Knoxville
The Automann 139.2830 is an automatic slack adjuster of the Meritor type, a critical component in heavy-duty air brake systems.
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Commonly used on Meritor-type axles but fits multiple makes. Always verify arm length, spline count, and spline diameter against your existing component.
Part data verified against 5 catalog sources
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It mounts on the S-camshaft and automatically adjusts brake clearance as the brake linings wear, maintaining consistent braking performance and safety. This unit features a 6-inch arm length and fits 1-1/2 inch diameter, 28-spline camshafts. Replace the slack adjuster if it fails to maintain proper brake stroke, exhibits excessive free play, or seizes due to corrosion or lack of lubrication. The 139.2830 is an aftermarket alternative to Meritor R801074 and many other part numbers.
Part Number: 139.2830
Meritor Type Slack Adjuster 6in - AS-1141
Dealer: KP Services Crossville
Compatibility, alternatives, and more
Parts commonly needed alongside brakes & wheel end
