How do i remove the gudgeon pin from the piston / crank on my Pinto.

I presume it is an interference/ press fit, do i need special tools to remove it.

I don't just want to hit it with a big hammer in case i damage anything

Cheers

Rich

There are tools available for pressing gudgeon pins in and out. If you don't want to damage the pistons then I would strongly suggest that you use one they are not much money

cheers

Mark

Any ideas where i would get one from, or what they are called

I looked through Machine Mart catalogue but couldn't see anything

Cheers

I have had mine for a lot of years but got it originally for my motorbikes - I think I got it from a bike shop

Sorry couldn't be more help

Cheers

Mark

pretty sure I;ve seen in Haynes manual that you put the piston in boiling water then push the pin out.

the alumimium piston expans more than the steel pin relinquishing its hold in the process. never done it myself but worth a try before Mr Hammer comes out to play.

Unfortunately it doesnt work that way on a pinto.The pin is a tight interference fit in the rod and must be pushed out , ideally in a press supporting the piston on a veeblock type support and using a shouldered pin to push it out.
Paul.

quote:

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Originally posted by 02GF74
pretty sure I;ve seen in Haynes manual that you put the piston in boiling water then push the pin out.

the alumimium piston expans more than the steel pin relinquishing its hold in the process. never done it myself but worth a try before Mr Hammer comes out to play.

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i have used a piece of tube slightly bigger than the gudgen pin about half as long again as the pin and some threaded bar some washers that fit in the whole in the piston, but not through the pin, thread the bar through the pin and tube use a piece of wood to protect the piston. just tighten the bolt and it pulls the pin out.