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Piston rear pin stuck?


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#1 renotheturk02

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Posted 16 June 2013 - 12:23 PM

Normally I'd prefer to have no posts, but I can't for the life of me get my rear piston pin (Part# 195) out. I'm attempting to install a new valve and I've been watching Gecko's raise/lower video. I am using a 1/16th punch, but it just won't budge. I feel pretty dumb as it's literally tapping a punch, but if anyone has some insight I'd appreciate it.

#2 BoobieM4H

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Posted 16 June 2013 - 12:55 PM

Is there not a demonstration of how to remove the roll pin in his vid?

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#3 renotheturk02

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Posted 16 June 2013 - 01:47 PM

In his video, he explains that you need to tap it with a hammer, but his comes out easily because of repeated disassembly. The pin it self has yet to move even a fraction of an inch.

#4 BoobieM4H

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Posted 16 June 2013 - 02:28 PM

Yea..just try to keep the piston stable so you can get a good whack on the pin punch

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#5 renotheturk02

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Posted 16 June 2013 - 07:33 PM

Okay I think i'm giving up on this route. After enlisting some help to hold the punch and piston while i smacked it, it still didn't move at all. I honestly don't feel comfortable hiting it any harder. Does anyone know how much complete pistons run?

#6 The Nutty Professor

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Posted 16 June 2013 - 08:21 PM

It sounds like there a very slight hitch. Meaning the Piston may need to be wiggled as you hit the pin. 1mm can be the difference between removing a part and ruining a pin.

#7 netpoc

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Posted 16 June 2013 - 09:16 PM

Yeah... you have to get a good solid hit in line with the roll pin. It's a pain to get it started, especially in a fresh piston (bolt) but don't be afraid to give it a good whack, as long as you have your punch lined up directly in line with the roll pin. Try using a towel, or thin foam, to place under the piston (bolt) so it will absorb some of the blow and also keep the piston (bolt) cradled in the correct position.




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