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| Asked this before but forgot the answer https://www.ausmini.com/forums/viewtopic.php?f=2&t=52197 |
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| Author: | Wombat [ Thu Apr 16, 2009 9:31 am ] |
| Post subject: | Asked this before but forgot the answer |
Re-pining MK1 door hinges - I presume pin gets knocked out "Upwards" and driven in "Downwards" and what size is the bush hole need to be drilled. And do you need to take hinges off the car to do them (guess it's easier if you do) |
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| Author: | 850man [ Thu Apr 16, 2009 11:57 am ] |
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(pin gets knocked out "Upwards" and driven in "Downwards") Thats how i do it. I use a 1/4 inch ream to size bush. Can do on car but easier to take hinge off. |
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| Author: | simon k [ Thu Apr 16, 2009 12:39 pm ] |
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that's interesting about reaming them - I've done a few in the past and the bushes have never needed reaming - the pin is a neat fit after the bush is fitted 
I reckon it'd be a major pain to do them on the car, like trying to change a diff with the engine still in the car |
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| Author: | 850man [ Thu Apr 16, 2009 1:47 pm ] |
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It depends on how worn the hole in the hinge is and what type of bush you use. I have fitted new bushes and not reamed them and when you assembly the hinge there is still play!. I try to avoid reaming the bush if possible, the pin should be a tightish fit in the bush. If you pick up a NOS hinge (we had hundreds of LH'ers) they are very tight. I put a little bit of "neverseize" copper greese on the pins when i install them. I used to reco lots of hinges, we used to sell them C/O. |
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| Author: | drmini in aust [ Thu Apr 16, 2009 2:12 pm ] |
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The standard bushes are 5/16" OD and 1/4" ID. But if the door has dropped badly a new std bush won't fix it. I have made oversize bushes before which are 9.0mm OD and 1/4" ID. Don't go any bigger, you will weaken the cast iron hinge (yes, that's what they are). |
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| Author: | Wombat [ Thu Apr 16, 2009 3:30 pm ] |
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drmini in aust wrote: The standard bushes are 5/16" OD and 1/4" ID.
But if the door has dropped badly a new std bush won't fix it. I have made oversize bushes before which are 9.0mm OD and 1/4" ID. Don't go any bigger, you will weaken the cast iron hinge (yes, that's what they are). LH door not too bad but will repin and new gaskets cause I can  RH door some bright spark replaced the pin with a nut and bolt and the door is out of alignment. I have a set of salvaged hinges that have been stripped back to bare metal and yes they will need some hi build or spray putty to fill all the pits in the cast iron  and they need new pins as they don't have any
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| Author: | mini_mad_matt [ Thu Apr 16, 2009 6:17 pm ] |
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One day i noticed one pin had nearly fallen out of the drivers side, so i put a nut/bolt in it just so the pin didnt fall out as i was going on a cruise. I replaced the bush and pin with new ones but didnt ream the bush, so as i tried putting the new pin through it spat out half of the bush. I had to use the bushes for the other door and tried to file it out a bit as i dont have a ream. The hinge on the door is worn itself too so my dodgy job didnt change a thing! Lesson learnt! |
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| Author: | drmini in aust [ Thu Apr 16, 2009 6:59 pm ] |
| Post subject: | |
If you fit them properly, the standard bushes do NOT need reaming for the pins. 
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| Author: | mini_mad_matt [ Thu Apr 16, 2009 7:14 pm ] |
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When you say fit them properly, is this essentially a tool designed for knocking the bush in? So it doesn't distort as it goes in? I presume this is where my issue was. |
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| Author: | drmini in aust [ Thu Apr 16, 2009 7:17 pm ] |
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mini_mad_matt wrote: When you say fit them properly, is this essentially a tool designed for knocking the bush in? So it doesn't distort as it goes in? I presume this is where my issue was.
Yes. I press them in with a shouldered tool in the drill press. Easy.
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| Author: | mini_mad_matt [ Thu Apr 16, 2009 7:23 pm ] |
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Yea i did it with the hinges on the door/car and i cant remember what i used to knock it in, but it wasnt ideal at all. Cheap fixes dont tend to work to well... |
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| Author: | drmini in aust [ Thu Apr 16, 2009 7:24 pm ] |
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To do a precision job, you need them OFF the car... |
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| Author: | Harley [ Tue Jun 30, 2009 8:45 am ] |
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Sorry to drag this topic up again but I need to get my hinges re-pinned ASAP. I have a new hinge pin kit, it has four pins and two bushes. Is that correct? When the hinges are remade, do I need some sort of jig to bolt the hinges onto and drill the hole through both or anything? Thanks. |
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| Author: | Wombat [ Tue Jun 30, 2009 9:50 am ] |
| Post subject: | |
Harley wrote: Sorry to drag this topic up again but I need to get my hinges re-pinned ASAP.
I have a new hinge pin kit, it has four pins and two bushes. Is that correct? When the hinges are remade, do I need some sort of jig to bolt the hinges onto and drill the hole through both or anything? Thanks. Yes two bushes - the bush goes in the "tongue" - some sort of jig would help - I use two soft pieces of wood and squashed it in a vice. Then let the hand drill pull through the hole - the first attempt I tried the drill press and it stuffed up the hole and I had to areldite the bush in second one free hand worked well and the bush was a press fit. Other thing I found was the tongue of one side was a little 'floppy' in the jaws of the other side. - first one I cut a spacer shim from an old feeler gauge a couple of thou thick - second one I carefully squeezed in the vice and took out the slop.
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| Author: | Mick [ Tue Jun 30, 2009 10:04 am ] |
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If it's a little loose, I squeeze the other side a little in the vice. Once I have a nice fit I assemble it together with the pin. |
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