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Meritor · Brakes & Wheel End
R801074
In stock · ships from Knoxville
This is an automatic slack adjuster for heavy-duty air drum brake systems.
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Exact vehicle fitment depends on axle configuration; verify camshaft diameter, spline count, arm length, and clevis thread. Some online catalogs incorrectly list light-duty passenger cars – disregard those entries, as this is a commercial-vehicle part.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 16 of 20.
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It links the brake chamber pushrod to the S-camshaft and automatically maintains proper clearance between the brake shoes and drum as the linings wear, helping keep brake stroke within legal limits. It is typically replaced when the adjuster seizes, fails to adjust (causing long pushrod travel), or shows internal gear wear. The unit fits a 1.5-inch diameter, 28-spline camshaft with a 6-inch arm and includes a 5/8"-18 clevis kit, commonly used with Type 30 brake chambers on many Class 7–8 trucks and trailers.
Part Number: R801074
AUTO SLACK ADJUSTER, 28 SPLINE
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside brakes & wheel end
