So I’m struggling to get my column shifter working so haven’t put the steering shaft in yet, but I did start modifying the WH collapsible lower steering shaft and prep for the upper shaft and steering box connections.
First, I removed the existing set screws from the lower steering shaft u-joints, took it apart, and used a tap and air compressor to clean the old Loctite out. Then for the hollow DD I drilled a 1/4 hole in the flat (there was a divot drilled for the set screw, so easy to locate). I then put it back together with the other set screw holding it in place and ran a tap through the existing u-joint threads and tapped the DD shaft (did this assembled so the threads would line up between the two).
I then used the 3/4” drilled head bolt I had, along with some blue Loctite. I then replaced the other set screw with another 3/4” drilled head bolt with a grade 8 jam nut, again with blue Loctite. Then I safety wired the two together:
On the other end, it’s a solid rod, so on the flat I drilled just slightly deeper (maybe 1/8”) to give the bolt a bit more depth to bite into. I then used the same 3/4” bolts, jam nuts, and Loctite and then safety wired those together as well.
It’s not very pretty, but pretty sure that ain’t goin’ nowhere….
To prep for the upper shaft and steering box connections, which both have “valleys” in the splines, I ground/filed the bottom of two bolts to try to match the shape of the valley. These will get jam nuts, loctite, and safety wired to the shaft.