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Dirtbiker
V4 Guru

United Kingdom
1060 Posts

Posted - 01 Sep 2020 :  20:28:13 Show Profile Reply with Quote


Any tips on getting the hinge pin out - never removed one before.

Ideally would like to leave the main part of the hinge attached to the car although I appreciate I may need to get it off to 'press' the pin out.

Was thinking about heat and a tap from the bottom?

Lots of play in the door part of the hinge - solution suggestions welcome! Oversize pin? Door part sleeved? Perhaps the pin is worn, not the hinge so could be replaced with a like for like part?

Thanks in advance!

melle
V4 Guru

United Kingdom
3830 Posts

Posted - 01 Sep 2020 :  21:01:14 Show Profile Reply with Quote
Wow, that looks bad! Never taken one apart, I would try (heat,) hammer and punch first. Just sent you an email.

For others' reference, these are the replacement pin sets I bought for my 95, but haven't tried yet (they'll need to be cut to length):
8mm: https://www.ebay.co.uk/itm/224001914734
8.5mm: https://www.ebay.co.uk/itm/114306315840

Iirc the standard pins are either 8mm or 5/16", the holes may need to be reamed to size for replacement pins. If the wear is in the cast parts ("leafs"?), sleeving with oilite bushes or similar would be a good option I would think.

Keep us posted, my 95 still need this job doing and I'd like to improve the hinges on my 96 as well at some point.

www.saabv4.com
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AnttiK
V4 Fan

Finland
103 Posts

Posted - 02 Sep 2020 :  05:48:15 Show Profile Reply with Quote
The pin was worn and also was the hinge part which is connected to the door in my car. Standard pins were 8mm and I replaced them with VW kleinbus 8.2mm oversized pin. I used 8.2mm drill ream the holes larger.

VW kleinbus pins are longer, so those have to be shortened. Old pins can be removed by punch and hammer, but it is easier to do the it if the hinges are removed from the car. But those hinge fastening screw are usually rusty..

Edited by - AnttiK on 02 Sep 2020 05:51:27
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Dirtbiker
V4 Guru

United Kingdom
1060 Posts

Posted - 15 Sep 2020 :  19:56:25 Show Profile Reply with Quote
Thanks for the tips.
We are moving house in less than two weeks (sooner than expected) so spent last night throwing panels on so I can drive the car!
Will revisit when moved in and report back.
Cheers
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Dirtbiker
V4 Guru

United Kingdom
1060 Posts

Posted - 27 Nov 2021 :  20:08:32 Show Profile Reply with Quote
Right, this got postponed as we were moving house but decided on the run up to Swedish Day to get it done.

Just did the upper one but the bottom should be the same process with a different size bush and pin.

First hurdle is getting the hinge assembly off the car. I found an air powered rattle gun did the job quite easily and I know these have never been off the car before. For anyone put off by the hassle of air tools I'm using an Aldi compressor which was half price and a Machine Mart rattle gun. This has proved extremely useful for jobs like this and particularly getting nuts of flywheels as trying to lock them in place is a right pain. This just goes bosh, bosh, bosh and off they come.

Next up was separating the two parts and on the original proved a massive headache. I had a spare which had a bolt in place of a pin and this came apart ok. Ended up using the original fixed part but had to really make a mess with the swinging part so used one off the spare.

Then drilled out the swinging part of the hinge to 12mm and pressed one of these in https://www.ebay.co.uk/itm/112746807327?var=413198535096



The remains of the old pin came out ok from the fixed part and that allowed a new pin from Malbrad to drift in smoothly. Overall a very satisfying job but still need to do the lower one and both on the other side.

Question: Something I had never noticed is that there is a removable rubber cap to allow grease to be injected. I was tempted to drill the oilite bush to allow this function but as I understand it oilite bushes are self lubricating so decided not to. Thoughts on this would be welcome!

Hopefully big updates soon on the 96 as went to North Wales last weekend...

Cheers

Edited by - Dirtbiker on 27 Nov 2021 20:11:01
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christophe
V4 Fanatic

France
224 Posts

Posted - 29 Nov 2021 :  16:06:47 Show Profile Reply with Quote
I might be wrong here, but aren't you supposed to let the busings soak in oil at least 24 hours before using them?
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melle
V4 Guru

United Kingdom
3830 Posts

Posted - 29 Nov 2021 :  19:30:07 Show Profile Reply with Quote
I think proper Oilite brand ones always come impregnated from the factory. I always buy knock-offs though ("Oilube"), so I stand them on my thumb, fill with engine oil, and press with my other thumb until oil seeps through the walls. In this application I wouldn't worry about it.

www.saabv4.com
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Dirtbiker
V4 Guru

United Kingdom
1060 Posts

Posted - 29 Nov 2021 :  21:53:04 Show Profile Reply with Quote
Thatmakes sense Christophe. As Melle says though I think in this application it probably doesn't matter. Especially as I hardly ever use the car (or open the door!)

Perhaps it would be an idea to drill the hole but just use a drop of occasional oil not grease. Just been doing a bit of reading on Oilite bushes and grease best avoided.

Cheers
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melle
V4 Guru

United Kingdom
3830 Posts

Posted - 29 Nov 2021 :  22:01:53 Show Profile Reply with Quote
Yes, avoid grease on oilite bushes at any cost as that blocks the pores and ruins them as a result. I've seen more than one damaged gearbox input shaft because someone used grease or even copper slip to "lubricate" the spigot bush.

www.saabv4.com
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andydeans3
V4 Guru

United Kingdom
1994 Posts

Posted - 11 Dec 2021 :  13:55:20 Show Profile Reply with Quote
Gareth
I've just removed the passenger, (right) hand door on my car to have the door bottoms replaced with new door caps.
Both hinges, as was to be expected, are pretty knackered. "Rattling" would be a good description.
In the lower hinge the strange thing is the pin seems quite tight in the part that swings, but is rattling about in the upper, and especially the lower, plate.
So to get these pins out is it just a matter of brute force with perhaps some judicious use of heat?
I've tried a bit of hammering, but nothing was moving so I'm now leaving the to soak in WD40 overnight.
Will get violent, with some heat if necessary tomorrow or Monday.


1978 LHD SAAB 96
1978 MGB Roadster
2008 LHD "Classic" Renault Twingo
1991 Nissan Figaro

Edited by - andydeans3 on 11 Dec 2021 17:23:56
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Dirtbiker
V4 Guru

United Kingdom
1060 Posts

Posted - 11 Dec 2021 :  20:57:19 Show Profile Reply with Quote
Hi Andy,
Yep, brute force!
Tried heat and pressing it out but no luck.
Ended up drilling it out and actually made a mess of the original swinging part as ended up off centre. Used a spare and will hopefully salvage the original one day.
Good luck and be good to see step by step door bottom repair photos if that’s possible.
Cheers
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christophe
V4 Fanatic

France
224 Posts

Posted - 11 Dec 2021 :  23:31:55 Show Profile Reply with Quote
WD 40 is not a true penetrating fluid. It is a water dispersant (hence its name). Best results are obtained with a 50/50 mix of acetone and ATF.
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UK_Sub
V4 Guru

United Kingdom
2555 Posts

Posted - 12 Dec 2021 :  09:52:08 Show Profile Reply with Quote
This stuff is great! (PB Blaster)...

https://www.amazon.com/gp/product/B000I2079E/ref=ask_ql_qh_dp_hza?th=1

Edited by - UK_Sub on 12 Dec 2021 09:53:05
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andydeans3
V4 Guru

United Kingdom
1994 Posts

Posted - 12 Dec 2021 :  12:41:02 Show Profile Reply with Quote
Gareth
Well I'm off to get very violent and hot with these hinges.
I will report back.

Simon

Aye, but have you seen the list of "bad" things about this product, taken from the UK Amazon site. The US version that your link takes you to, doesn't mention these things.

ESPECIALLY the bit about cancer causing!!

Yikes!!!

quote:
"Causes serious eye irritation.

Contains gas under pressure; may explode if heated.

Flammable aerosol.

May be fatal if swallowed and enters airways.

Suspected of causing cancer".


1978 LHD SAAB 96
1978 MGB Roadster
2008 LHD "Classic" Renault Twingo
1991 Nissan Figaro

Edited by - andydeans3 on 12 Dec 2021 12:42:49
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melle
V4 Guru

United Kingdom
3830 Posts

Posted - 12 Dec 2021 :  13:43:05 Show Profile Reply with Quote
Who the hell swallows flammable aerosols?!

www.saabv4.com
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andydeans3
V4 Guru

United Kingdom
1994 Posts

Posted - 12 Dec 2021 :  13:52:05 Show Profile Reply with Quote
Guys
Hah, door hinge pins no match for Big Bertha my hydraulic press, along with a bit of heat with a little Michael J Mouse blow torch. (B&Q's finest).
2 tons of pressure a bit of heat, and the pins were quaking in their boots, and CRACK out they came....
Pin on the lower hinge was rotating in upper and lower housing plates, but seized on the moving hinge. It put up the biggest fight. A lot of pressure and then heat.
The upper hinge was rotating in the hinge piece, but seized in the upper and lower support plate. It hardly put up a fight.

On the lower hinge I note that the pin is a reasonably snug fit on the swinging hinge part, but rattling around in the holes in the upper and lower plate.
The upper hinge is a reasonably snug fit in the support plates, but a bit loose pin the swinging part of the hinge.
I also note that an M8 Stainless steel bolts seems to fit quite well, in place of the pin.
Has anyone tried just using M8 bolts instead of the pins?


1978 LHD SAAB 96
1978 MGB Roadster
2008 LHD "Classic" Renault Twingo
1991 Nissan Figaro

Edited by - andydeans3 on 12 Dec 2021 19:36:53
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