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Changing A Connecting Rod - Wisconsin Abn


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#1 New.Canadian.DB.Owner ONLINE  

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Posted February 15, 2014 - 08:00 PM

I'll be changing the connecting rod on my Wisconsin ABN (if the new one ever gets here).  The piston & rod are out.  What nightmares lie in wait for me?  What is the best way to remove the wrist pin retainer?  Will the pin come out easily or will I need a press?  What don't I know I don't know?


Edited by New.Canadian.DB.Owner, February 15, 2014 - 08:00 PM.

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#2 Bolens 1000 ONLINE  

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Posted February 15, 2014 - 08:19 PM

The clips can be removed by needle nose pliers. It takes practice but with the right moves you can slip them in and out in seconds.

 

The piston pins should not be hard to move but will require some force to get it out.


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#3 superaben OFFLINE  

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Posted February 15, 2014 - 08:39 PM

The only thing I will add is that you ought to cradle the piston in something round if you have to drive the pin out.  I have seen pistons crack if you have to whack the pin too hard.  Wisconsin pistons are sturdy enough, though, that it shouldn't be a problem, but be forewarned.

 

If a pin doesn't move quickly for me, I put penetrating fluid on it and it has slid right out every time so far.  I use a piece of round stock I cut down that is close to the pin size to drive it.

 

Ben W.


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#4 New.Canadian.DB.Owner ONLINE  

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Posted February 15, 2014 - 08:56 PM

So, this is the wrong way?

 


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#5 Gtractor ONLINE  

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Posted February 15, 2014 - 09:01 PM

I'd say that was wrong based on the outcome.  :(

I assume you are going to use a Plastigage to measure the rod to crank clearance? 


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#6 Littledeere ONLINE  

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Posted February 15, 2014 - 09:03 PM

That is totally wrong that guy standing on the press needs a much bigger hammer :wallbanging:  :wallbanging:


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#7 New.Canadian.DB.Owner ONLINE  

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Posted February 15, 2014 - 09:17 PM

I'd say that was wrong based on the outcome.  :(

I assume you are going to use a Plastigage to measure the rod to crank clearance? 

No, I'll be using the "hope like h***" method.  I've mic'd the crank & I'll measure the connecting rod.  Not sure what to do if it is way out.  It will only get about two hours of run time per year.  If it is close, I'll likely get all I need out of it until I can find a proper machine shop that can grind a crank.  I've asked all the local shops & they all say something like "Not since Fred retired 10 years ago".


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