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  1. What is Tappet Clearance - How to Measure & Adjust …

    • Tappet clearance, also known as valve clearance, is the small gap between the rocker arm and the top of the valve stem (Yoke). Engineers can observe and adjust tappet clearance only when the valves ar… See more

    Purpose of Tappet Clearance

    The main purpose of tappet clearance is to allow a small expansion gap of the valve stem and pushrods to accommodate the effects of a heated engine. Note that, if this isn’t done, t… See more

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    Why Tappet Clearance Is Necessary

    The clearance between the valve stem and rocker arm is very important mainly for two reasons: 1. It accommodates the thermal expansion of the valve’s axis (spindle) that is caused b… See more

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    Tappet Clearance Measurement

    To measure tappet clearance (a.k.a. perform a tappet clearance procedure) you will need to measure the increase or decrease of the clearance. Depending on that, you wi… See more

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    How to Check Tappet Clearance - Practical Applications

    Let’s get to work now. How exactly can you check valve clearance? Before you start, make sure you review the manufacturer’s manual, as the explanation below is rather generic. Co… See more

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