TM 5-4320-302-145-20.CYLINDER HEAD ASSEMBLY, ROCKER ARMS, PUSHRODS,AND TAPPETS (CONT)Location/ItemActionRemarks30. Rocker bracketInstall rocker assembly and hex nuts. Tightenwith assembledhex nuts to 21 ft lb (28 N.m) using torquerocker armsgage.31. CoverInstall cover, new gasket, hex bolt, and washersInstall new gasket.after valve clearance adjustment.ADJUSTMENTNOTEAdjust valve clearance only when engine is cold.32. Flywheel orRotate crankshaft by rotating flywheel or V-beltV-belt pulleypulley clockwise until valve stems and rocker armsoverlap. The exhaust valve should be closing and itsvalve stem rising. The inlet valve should be openingand its valve stem going down. Both valve stemsshould be at the same height. Rotate crankshaftanother complete revolution, or 360 degrees oftravel of the flywheel or pulley. The piston shouldbe at the top of its compression stroke and thevalve clearance can be checked and adjusted.5-90
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