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Allis Chalmers Discussion Forum
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installing pistons in a 20-35

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geraldk

08-01-2005 19:11:02




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as anyone knows who has had a 20-35 apart the top of the sleeve has a greater diameter for the top 1.5". This makes installing the pistons difficult as a ring compressor will not work. Can anyone tell me how to ger the rings collapsed enough to get the pistons in the cylinder?
Gerald




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Kirk in PA

08-03-2005 09:51:04




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 Re: installing pistons in a 20-35 in reply to geraldk, 08-01-2005 19:11:02  
If you have an extra sleeve, you could cut a portion off of the bottom. This piece would then fit into the large diameter of the sleeve that you want to get the piston into. You could use a normal ring compressor to get the piston into the cutoff sleeve and then push it into the permanent sleeve.



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Butch(OH)

08-01-2005 20:07:38




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 Re: installing pistons in a 20-35 in reply to geraldk, 08-01-2005 19:11:02  
I don't know the A-C recomended way but I do know how I did a 4 3/4" bore A motor many years ago. I used three small screwdrivers. Starting 180 degrees from the gap shove the ring in, hold it and go to one side and shove it in. Hold those two with one hand and push the other side in with the other screw driver. You realy need somebody on the bottom to lift a bit as the heavy piston and rod will drop to the next ring with a clunk. Then proceed to the next ring and do same. By the time you get to the top ring you may have to push down a tad as friction will be holding the piston up (maybe). You may have to tap the piston a bit to get then in, dont beat. The top of the bores are tapered to facilitate this. On another motor that had the sleeves removed it was easier to install the piston in the sleeve from the bottom and then install the sleeve with piston and rod installed.

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