Automann 139.2833 Automatic Slack Adjuster – 1-1/2" 28 Spline, 5.5" Arm, Meritor Type RevHD Mack Anthem (2018+) with Hendrickson

Mack Anthem (2018+) with Hendrickson air ride

Extended cranking or hard starting

Do not over-tighten clamps as this can damage silicone material

International / Navistar DT-series

Signs You Need a New Coolant Surge Tank

Automann 139.2833 Automatic Slack Adjuster – 1-1/2" 28 Spline, 5.5" Arm, Meritor Type RevHD Mack Anthem (2018+) with HendricksonAutomann 139. 2833 is a stroke sensing Meritor Type B automatic slack adjuster with a 5 1 2" arm and 1 1 2" 28 spline input a direct replacement for Meritor R802447 R803049. The yellow piston design holds shoe to drum clearance automatically across service intervals, and the unit ships complete with the 179. YK5005 clevis kit (5 8" 18 thread). Use on Class 68 tractors, vocational trucks, and air braked trailers with Meritor drum brake foundations.