Another option to the busted mirror post problem.
Yesterday, I went to wash the driver's side mirror when the whole housing spun around freely. I had a busted post.
A bit of research on i
h8mud showed the options where bolts were used but I decided that I still wanted the wires to move freely within the post so decided to take a novel approach. I would use a bolt with a hole in the middle along the axis. Easier said than done.
Off to the hardware store and I saw some 1/8" brass nipples that fit perfectly inside the old pivot tower. Off to the nut and bolt section for a two 7/16" NC nyloc nuts and a couple 3/8 fender washers (fit the 1/8" nipple perfectly). I actually got 4.5" and 3.5" nipples in case I needed the longer length. I ended up using only the 3.5" ones.
There are a few threads on dis-assembly of the mirror so I will not get into that portion of the work.
The proposed setup
The final setup ended up being (from top to bottom in the mirror - left to right above) - nyloc nut, 1.5" fender washer, factory washer for the top of the spring and spring.
On the bottom I used a 1-3/8" fender washer (to spread the pressure over a larger area) and another nyloc nut.
Back in the garage, I threaded the ends of the nipple with a 7/16" die and the nuts went on as they should. Test fit into the broken post and the 3.5" is the correct fit. I could not fit the wires into the pipe hole due to the loosely fitting protective sleeve. That cover was readily cut off and a piece of heat shrink was used for its smaller diameter.
A view of the bottom showing the wires coming through the nipple. They rotate freely.
The ball bearings and the rotation area were greased with lithium grease and everything assembled back together.
The end result is full rotation with the wiring still able to rotate freely. The mirror moves very smoothly now between positions. I am also considering doing the passenger mirror before it breaks off.
The only problem noted is that the bottom nut is a bit too long to allow the plastic cover to go back on. But that is readily fixed by using a thinner nut and star lock washer.