Shear Pins

RustyRatRod said

That's the only reason the are there. To hold down vibration. They serve no safety purpose whatsoever.

Click to expand...

IIRC there is a factory depth measurement taken at the coupler to adjust where the shoes sit when installed. If the sheer pins were gone, or faulty, the lower shaft could slide down and bottom in the coupler. This would cause............?