Figure 3-58. Push Rod.
adjusting screw, the height of the rocker arm changes.
clearance is adjusted by putting selective shims between
On some overhead camshaft engines, the camshaft is
the cam lobe and the lifter. Various thicknesses of the
positioned directly over the top of the valve stems. On
shims are used to obtain the desired clearances.
Figure 3-59. Rocker Arms.