TM 5-3810-207-20/TO 36C23-3-37-12B-Intake and exhaust manifold, removalFigure 161-Continued.Section VI. CARRIER ENGINE AND EXHAUST VALVES264. GeneralThe six intake and six exhaust valves are locatedin the cylinder heads and are actuated by the camshaftthrough the tappets, push rods, and rocker arms.Adjusting screws in the rocker arms provide the means ofadjusting the valve clearance. The stem of each valveslides within a guide pressed into the cylinder heads. Theintake valves control the admission of the fuel-air mixtureto the cylinders, while the exhaust valves permit theexplusion of gases from the cylinders.265. Valve Covera.Removal.(1)Remove the breather tube from the valvecover assembly (par. 240).(2)Remove the accelerator bellcrank (par.249).(3)Remove the rocker arm valve covers asinstructed on figure 162.b.Cleaning and Inspection.(1)Clean all parts with an approved cleaningsolvent.(2)Inspect the valve cover for dents, elongatedholes, and other damage.(3)Replace damaged parts as necessary.c.Installation.(1)Install the rocker arm valve covers asillustrated on figure 162.(2)Install the accelerator bellcrank (par. 249).(3)Install the breather tube on the valve coverassembly (par. 240).211
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