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A major task ahead of engine manufacturers today is to extract the maximum power output from the engine while improving the reliability and durability, this is even more significant in case of applications such as power generation where engine experiences high loads for a prolonged period of time. Durability of valve train components in such cases greatly affects the overall engine life and service intervals. Majority of power generation engines running at medium speed employ pushrod type valve train. The high valve train inertia along with continuous operation at high loads poses as different set of problems for such engines. A significant amount of wear can occur at various valve train part interfaces which eventually leads to change in valve lash. A large change in valve lash beyond a certain point deteriorates the engine performance and emissions; it also accelerates the wear further.