Stuck pin

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Stuck pin

Post by mikehn » 21 Jul 2015, 19:20

Hi all
Hoping someone has a clever idea to help me.
I am in the process of changing the boots on the rear suspension on a 1979 CX, problem is that I have a stuck pin on the ram, the drivers side slid out without a bother but the near side one is refusing to budge. I have sprayed loads of penetrating oil all around it, it did'nt respond to a pull, twisting or using a vice grips with a long screwdriver as a lever, it also didnt respond to various threats and swearing :-D
Any suggestions appreciated.

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Re: Stuck pin

Post by DickieG » 21 Jul 2015, 20:42

Heat might be the answer.

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Re: Stuck pin

Post by c.morewood » 22 Jul 2015, 14:42

I'm afraid Mike, after my experiences with the Xantia, that it may just be hours and hours of trying different things to punch it out with.. I tried nails, punches, long punches. pulling twisting, plus gas again and again, couldn't drill as I couldn't get a drill in there. thied to remove the whole rear strut but the bolt and nut were too rusty.. thats a future nightmare job,. I think it took 2 or 3 days of concerted effort to get one pin out. You just have to persevere it will come out eventually.honest.
Good luck

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Re: Stuck pin

Post by RichardW » 22 Jul 2015, 15:20

The bolt's not really a night mare - just lop the head off with an angle grinder, then push it out inwards. If it fouls something before it comes out, then 'just' cut it off behind the brake pipe, repeat till it comes free :-D

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Re: Stuck pin

Post by Peter.N. » 22 Jul 2015, 18:57

Had the same problem with my C5 (I have also had it with CX's and XM's). You need to find a punch that is almost exactly the same diameter as the pin, if you don't hit the whole surface area it spreads and gets tighter. I have a set of parallel punches that I got from ebay for not much money and always having the correct one is worth its weight in gold.

Heat my help but you can't use very much because the housing is alloy.


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Re: Stuck pin

Post by quintet » 22 Jul 2015, 21:13

mikehn wrote:Hi all
Hoping someone has a clever idea to help me.

Any suggestions appreciated.
Any suggestions?... strange as this may sound have you tried using 'brake fluid' as a penetrating oil...? its viscosity is basically so thin its capable of seeping into areas that an oil/lubricant (inc wd40 which i swear by) cannot penetrate.

When i heard someone suggest this for the first time i took it with a 'pinch of salt' so to speak but....these days i keep a spray bottle of (used) brake fluid to hand for anything that looks like its gonna be a :evil: to undo. It doesnt work everytime but weirdly it does seem to work although leaving the stubborn component to soak for as long as possible is obviously beneficial.