side mirror - adjusting for tightness

[scottyrocks]

I've been trying to tighten up the driver's side mirror because it tends to fold in at highway speeds.

All that is actually adjustable is the top acorn nut. No matter how much I tighten it, the mirror is never locked into place and eventually folds in.

Is there another adjustment I'm not seeing?

When I removed the mirror assembly from the hinge, I don't see any way to take anything apart so I can add a washer just under the acorn nut.

What am I missing?
_________________
“If you care for a thing long enough, it takes on a life of its own, doesn't it? Mending old things, preserving them, looking after them – on some level there's no rational grounds for it.”
– D. Tartt, 'The Goldfinch'

[Bobs67vwagen]

When you take it apart there should be a spring in there. Tightening the acorn nut tightens the mirror by compressing the spring. Is it missing? Sorry I think I mixed it up with the later mirror which has a spring. I will take a look tomorrow for you, in the meantime maybe someone else will weigh in on this.

[KingAir42]

I just tossed in some lock washers in mine and it worked well
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A stitch in time saves nine

[runamoc]

[my3bugs]

there are more than one style of mirror mount , some have a brass bushing , some have a brass tapered shaft .. round or oval ???

https://socalautoparts.com/product/mirror-mount-ki...xyyO6t7NqQ

https://www.jbugs.com/product/113-000.html?utm_con...BcQAvD_BwE

[scottyrocks]

[my3bugs]

i duno just trying to help .i THINK that washer might be keeping it from snugging down inside , that changes everything . it keeping the mirror from going down to where it supposed to be on the brass bushing part inside , is my guess . ditch the washer n try again ... you have a round mirror .

to me it looks like ya you tightened it BUT with that washer the mirror base nut does not go down on the brass where its suposed to snug , you snugged the nut but not on the brass , now its too long inside . you follow me ? so your mirror just spins on a pin . as you have no adjustment the way it is .

with the mirror n washer removed -now snug down the lower base nut tight over the brass till its good n snug n firms up the brass , then add the mirror n acorn n snug it . i have monkeyed with a lot of these mirrors .

i dont tighten the acorn too tight so when it gets bumped it can move not brake the arm . i bump into it it more than you might think , at 70 years old LOL

[scottyrocks]

I just tried it without the washer and it does snug up a bit better, but there seems to be a 'sweet' spot, and if you pass it, it loosens up a bit again.

Thank you for the suggestion, my3bugs, it has helped.
_________________
“If you care for a thing long enough, it takes on a life of its own, doesn't it? Mending old things, preserving them, looking after them – on some level there's no rational grounds for it.”
– D. Tartt, 'The Goldfinch'

[runamoc]

[ppilotmike]

I had the same problem with my cheap after market mirror. Been a couple months now with out problems. My fix was to rough up the short tapper which goes down into the hinge, I believe the hinge is wore. Any way tightened down the big nut with 2 flats real tight. While I had it a part I also roughed up the long taper as well and installed the mirror. I actually had to loosen the small nut to adjust the mirror, then retighten. Good luck I feel your frustration.