Collapsible Steering Shaft Demystified

Dana67Dart said

Without the pins the column can work it's way shorter and untimatly pull out of the coupler under the correct circumstances.

That's the problem

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If the coupler is in good shape, it can't happen. There are pins that keep the sliding shoes from coming out. I can't see the lower shaft overcoming gravity and moving up and out of the coupler even if those pins were missing, but, I guess anything is possible. I've never seen or heard of it happening myself.