Repairing flipping chrome mirror

Discussion in 'Shade Tree Mechanics' started by STAGE III, Sep 13, 2017.

  1. STAGE III

    STAGE III Lost Experimental Block

    IMG_2163.JPG IMG_2156.JPG IMG_2157.JPG IMG_2156.JPG IMG_2157.JPG IMG_2159.JPG IMG_2162.JPG IMG_2152.JPG IMG_2154.JPG IMG_2153.JPG Okay you are rolling in your lean mean fighting machine,elbow out the window,tunes jamming,and massive power on tap just a foot thrust away!

    Ehhhh......let's see what kinda ride is behind me at the traffic light that I am about to leave wide eyed in my monumental carbon footprint when the light clicks green,heh hehhhh.

    Grab your beautiful chrome Buick mirror and rotate it to see the victim behind you when you suddenly hear a pop and now your mirror is doing a rag doll head flop.

    Cool factor has been mildly injured so you keep holding the mirror up till you get out of sight!

    Well,unfortunately even in privacy you realize that NOT EVEN DUCT TAPE can fix this!!!!

    While examining the overall mirror follow the chrome door mount up to the bottom of the mirror head where about a 1/4" post extends into the untold mysteries lying behind our mirror into the head of the unit.

    The 1/4" post going into the mirror head has a ball swivel mounted at the top which is then sandwiched in between two machined seats which allows the mirror head to be adjusted to your desire.

    So far so good until we get to the top ball swivel fastener plate. The swivel ball sits in a machined seat in the mirror head itself and then 3 posts extend beside & above the swivel ball. The 3 posts secure a machined metal seat to also allow the swivel ball to move by hand on that end.
    The weak link in this design is that the 3 cast posts securing the top swivel plate are secured by staked on fasteners. I guess they had threads of some form and eventually the hammered flat fastener heads eventually fail releasing the top plates pressure on the swivel and you end up with an unmanly limp mirror:oops::confused:

    So how do we fix this?

    You can try and heat gun the mirror adhesive mounts behind the glass and maaaaybe get lucky and save your mirror. In my case the 47 years of dried adhesive wasn't about to turn loose on mine so my 13 years of bad luck on mirror breaking is now ticking.

    This is a very tricky repair if you don't have the basic tools,magnification lights,know how to drill & tap straight but here is how it is done. Hey! It's broken already you can't make it worse UNLESS you want to send it out for SEMI-professional repair at which point that lucky stiff needs it as original and complete as when broke so he has the best chance of success.



    The first thing you are going to need is a points file or a very small Dremel cut off wheel in order to remove the mound of metal left at the top of the broken post. This needs to be as flat as you possibly can get it .

    Adjust the chrome mirror mount in the direction needed so that the upper swivel mount will lay as flat as possible against your now filed flat broken post and give you a good point of reference for center.

    Next get a high-quality snapper punch and make the critical decision of where you think dead center is. If you are incorrect your drill bit or tap or both can come out of the side of the small diameter mounting post ruining it so this is the most critical portion so get it right.

    Select a very small diameter drill bit of your choosing and follow it with an equally small tap I used a 4–40 tap on mine .

    If you drilled it straight, tapped it straight, then throw some Loctite in for good measure aside from needing a new mirror you have just repaired and increasingly difficult to find almost 50-year-old Mirror! CONGRATS!

    I will be glad to try and repair these for members in exchange for my motto of "I will work for Buick parts!" But due to the potential inconsistencies of cast parts I cannot guarantee success each time but I am very very careful.The day I run into an air pocket in the porous metal all bets are off though,but so far so good! : )

    Best of luck to all of you and remember When better cars are built,Buick will build them !

    Sorry the pictures posted out of order but I haven't eaten today and it's almost 230 so you just have to figure that one out on your own ha ha Ha ha ha ha ha
     
    Last edited: Sep 13, 2017
  2. JoeBlog

    JoeBlog Platinum Level Contributor

    That came out quite nicely. Very sound methodology, too. You'd be welcome in my garage anytime!
     
  3. STAGE III

    STAGE III Lost Experimental Block

    Thank you my good man : )
     
  4. BYoung

    BYoung Stage me

    This should be a Sticky
     
  5. Brett Slater

    Brett Slater Super Moderator Staff Member

    Agreed and done!
     

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