Here are some before & after pics of an industrial 2-step flywheel we surfaced. The flywheel is off of a Kenworth semi truck with a manual transmission. We first machine the larger lower surface on our Winona Flywheel Grinding machine & measure how much material is removed. We then setup on the narrower upper surface & remove the same amount of material as we removed from the lower surface. After surfacing the flywheel it is ready to be mated with a new clutch & pressure plate for another round of service.
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