Fender mirror won't stay in place

Tighten it up? Sorry, couldn't contain myself. Try a little LocTite on the hardware. BTW, what's moving on you?

 

Is it the shaft it's mounted to that's turning (like mine does), or is it the mirror itself turning on the ball mount?

I had one side that just the mirror was turning and tightening the three screws on the mirror itself solved the problem. The other side however, the tube that adjusts the bracket length has a slip-nut on it and it doesn't stay tight for very long. I thought about jb-welding the thing in place once the mirror is adjusted. It drives me nuts...

 

Superglue the sucker....once its adjusted correctly, it doesn't matter if its superglued. Won't be moving anytime soon. When I was younger I had a sound system in a car where the mirror would end up pointing directly down in a matter of two hits from the subs, superglued the mirror, and it was all good.

 

Put some silicone in the mirror ball joint after loosening the screws up a little. let it set up before you tighten it down again. That will give it a softer surface to seat itself to.

As a speaker reconer, I also know that superglue will get brittle with sunlight and age. When I was in that business, I wouldn't use superglue not because it didn't work, but because it wouldn't last. Most of my fellow reconers thought that it was a way to insure business traffic.

Epoxy will last much longer that superglue.

 

LOCKTITE! That's what it's made for! Use the right tool for the job!

 

I suggest instead of making it inservicable on the nuts you get some nylon type lock nuts. A favorite item on all my repairs. They are vibration proof.

 

Then tightening the three screws should cure it... along with maybe a dab of superglue or locktite in the ball joint itself once the mirror is adjusted correctly.

 

Yes, tighten the 3 phillips head screws up around the ball joint. It'll put more pressure on it locking it down. You shouldn't need any glue on a new mirror.