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134.2840
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Automann · Brakes & Wheel End
134.2840
In stock · ships from Knoxville
Manual slack adjuster for S-cam air brake systems on heavy-duty trucks and trailers.
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Universal fit
Universal fit for heavy-duty trucks and trailers with S-cam brakes requiring a 1.5-inch, 28-spline camshaft and a 5 or 6-inch arm. Commonly used on drive and trailer axles.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 16 of 27.
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It connects the brake chamber pushrod to the camshaft, converting linear motion to rotational force, and allows manual adjustment of brake shoe-to-drum clearance. Replacement is typically needed when the adjuster is seized, has excessive free play, or causes uneven braking. This unit fits a 1.5-inch diameter, 28-spline camshaft and provides a 5 to 6-inch arm span.
Part Number: 134.2840
MANUAL SLACK ADJUSTER 5''-6''
Unit: ea
Dealer: KP Services Crossville
Compatibility, alternatives, and more
Parts commonly needed alongside brakes & wheel end
