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Door hinge refurbishing.

Posted: Wed Nov 28, 2012 7:32 pm
by Nissanman
My apologies if this has been covered before, I did a search and couldn't find a blow by blow description.
My Body Shop man has recommended that I refurbish all four door hinges since the play in them is excessive.
OK, so I took them home and without thinking too much about it, proceeded to dismantle the hinges.
Now, the pin is 5/16"[8mm] in diameter so it is no wuzzy device.
I set them up in a vice to hold them steady, placed a 1/2 nut under the splined end of the pin and bottomed the hinge on the nut.
A squirt of CRC into the slight recession at the tapered end and then proceeded to whack at that end with an 8mm pin punch and a RBFH [Reasonably Big Flaming Hammer].
A couple of sharp whacks and below and hold, the pins started moving :)
Once free the pins required little pressure to slip right through the relevant holes.
OK, that was easy enough, then I read how HARD these little suckers can be to extract!
Phwew! You gotta be lucky sometimes :lol:
Anyhoo, all the pins show wear in the centre section where the smaller hinge plate pivots.
Image
Additionally the hinge holes are also enlarged.
When you insert the pin into the large hinge the interference fit is evident.
Inserting the pin into the small hinge there is excessive slop.
There are a couple of ways to remedy the problem, new pins with replaceable bushes or just the simple pin arrangement the factory used.
So, my new quest is to source some suitable oversize hinge pins and have the holes reamed/bored out to suit.
I will post updates on this as I move through this next exciting chapter :smt006

Re: Door hinge refurbishing.

Posted: Wed Nov 28, 2012 8:21 pm
by sports imports
I have many used hinges with little to no wear. $35 each.

Ross
sports imports

Re: Door hinge refurbishing.

Posted: Wed Nov 28, 2012 8:29 pm
by Nissanman
Thanks Ross but I think I owe you a lot of $$$$ already :roll: :roll: :roll:

Re: Door hinge refurbishing.

Posted: Wed Nov 28, 2012 9:02 pm
by sports imports
your package is ready to ship.I can add some hinges.

Ross
sports imports

Re: Door hinge refurbishing.

Posted: Thu Nov 29, 2012 12:07 am
by Linda
Hinge pins from McMaster-Carr:
http://www.mcmaster.com/#hinge-pins/=kd9zfy" onclick="window.open(this.href);return false;

Linda

Re: Door hinge refurbishing.

Posted: Thu Nov 29, 2012 11:35 pm
by Nissanman
I did a little research on the inter web and decided to have a look in my favorite Toy Shop, Rare Spares: -
https://www.rarespares.net.au/rarespares/
They advertise several different hinge pin repair kits for domestic cars and this one caught my eye: -
Image
Sure enough, the pins are the same length, have a spline on the top and are slightly larger in diam. 8.5mm as opposed to the OEM pin at 8mm.
Look close don't they: -
Image
OEM on the left, new on the right.

The kit doesn't include any bushes which infers that the pins are hardened as were the OEM pins.
So, time for a new 8.5mm drill bit and some workshop time 8)