8 ENGINE IB 17 body movement closing the check valve and transmit i ting zero lash movement of the push rod to open the intake or exhaust valve YZ DIAL In addition oil under pressure in the plunger also I INDICATOR flows through the metering disc plunger cap and hol low push rod to the rocker erm assembly v VA 2 Locxmna I I W vtuncsn cnr V I Q7 Mggnmc DISC sem ptuncsn dai V ii I K Flu IB 15 valve Sl m ln Gaim Cluranca M asurnm nI N Atv I AX slam I3 Determine valve stem to guide clearance by Q subtracting diameter of valve stem from size of the vAi vE pilot selected Illl U E vAi vs I serum llssamhly Ill Thoroughly clean valve stems and valve guide XQXFNER bores I2I Install each valve in the same valve guide from I which it was removed ggmgin I3I Install new valve stem oil deflector on each SPRING valve stem l4I Position each valve spring and retainer on cyl gag inder head and compress the valve spring with com gz pressor tool 5I Install valve locks and release tool H IB 16 www uydmlnc hmm lssmbly I6 Tap each valve spring from side to side with a light hammer to set the spring properly at cylinder w head I NYDIIAULIC VALVE TAPPETS V g gi E Y we The hydraulic valve tappet consists of a body NM plunger metering disc plunger cap and lockring fig I 1B 16 I I The tappet operates in a guide bore which has an I I J oil passage drilled into the adjoining oil gallery ig II Ei When the tappet is on the heel of the cam lobe oil I under pressure at the main oil gallery is admitted into the tappet through a hole in grooved portion of the tappet body Oil flows into the plunger and through cunnmnccvcts 1 sAx nowu cvci the check valve assembly maintaining the tappet fully IVMVE CWSEDI WM VF PENl charged fig IB l 7 MM2 During the normal valve opening events the tappet leaks off oil Contact with the cam lobe causes tappet FI l IN IIVIIWIIW TWIWI UW UW