End Play

CAUTION: Prying against the camshaft sprocket (6256) with the valve train load on the camshaft (6250) can break or damage the camshaft sprocket. Therefore the rocker arm adjusting nuts (if equipped) must be backed off, or the rocker arm (6564) must be loosened enough to free the camshaft. After checking the camshaft end play, adjust the valve clearance.





1. Push camshaft toward rear of engine. Install Dial Indicator with Bracketry TOOL-4201-C or equivalent so indicator point is on camshaft sprocket bolt.

NOTE: Dial indicator may also be installed on rear of engine with indicator point placed on flat area of camshaft end.

2. Zero the dial indicator. Pull camshaft forward and release it. Compare dial indicator reading with specifications. If end play is too tight, check for binding for foreign material in camshaft thrust plate. If end play is excessive, check for worn camshaft thrust plate and replace cylinder head as required.
3. Remove dial indicator.