Patent ID: 8646426

Claim:
A method of setting valve lash for use on an internal combustion engine valve assembly having a rocker arm, a spring body, an adjuster fastener engaged with the rocker arm, and a locking fastener, the method comprising the steps of: engaging the adjuster fastener and locking fastener with a displacement tool; linearly displacing the adjuster fastener into contact with the spring body and generating a resistance curve based on an amount of force applied to the adjuster fastener by the displacement tool; calculating, using the resistance curve, a zero crossing point position of the adjuster fastener with respect to the spring body; calculating an adjuster fastener predetermined axial final valve lash position with respect to the zero crossing point; linearly displacing the adjuster fastener away from the spring body to the adjuster fastener predetermined axial final valve lash position; and securing the locking fastener to affix an axial position of the adjuster fastener with respect to the rocker arm.