Quote:
Originally Posted by Huggerorange73
But if the pin isn't load bearing, and is only a locator.....why does pin breakage lead to epic failure?!?!
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The pin is load bearing. Just not intended to be the main load bearing factor. It's just like a crank pin/key for a balancer. It locates the balancer in it's exact spot and supplies some locking mechanism to prevent it from moving out of position - but the balancer bolt is the main clamping force securing it.
The cam pin locates the cam and provides a lock to prevent it from turning, but the bolt is the main player in the clamping force torquing the gear flatly to the cam.
Think of the pin as like a lock. You've got bolt torque and a lock. You can't rely on just the lock, it will fatigue over time if the bolt torque isn't solidly clamping the gear to the cam.