Kent-Moore J-41683-A H-Ring InstallerKent Moore J 41683 A H Ring Installer Applications: Mack Truck E TECH and ASET engines Any valve train failure that results in excessive valve lash or subjects the valve lifter body to rotational force, can result in the valve lifter H ring dislodging or rotating out of alignment in the lifter bore. These types of failures include a broken rocker arm, broken rocker shaft, broken rocker shaft mounting bolts, etc. When any such failure has occurred, the