TM 9-4310-397-14(i)Adjust valves per the following:NOTEThe valve clearance can be adjusted with the engine cold or hot.1Using engine rotation tool (item 15, section III, appendix B), rotate engine flywheel in running direction(clockwise viewed from water pump) until No.1 piston (front) has reached top dead center (TDC) oncompression stroke. Insert timing pin (item 16, section III, appendix B) into flywheel.NOTEWhen No.1 piston is at TDC on compression stroke, valve springs of No.1 cylinder are notunder tension.2Adjust intake valve clearance to 0.014 in. (0.35 mm).3Adjust the exhaust valve to 0.018 in. (0.45 mm).NOTESome engines may have rocker arms with socket head hollow set screw located above theadjusting screw. The set screw must be backed off two or three turns before making valveadjustment.4Torque set screw to 7 ft-lb (10 Nm) after adjustment is made. Make sure set screw does not restrict lubeoil passages in rocker arm.Figure 6-31. Valve Adjustment6-31
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