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  1. #1

    How to Remove Piston?

    So I got one cylinder off finally on my 93 SL750 but when I pull that, the piston remains sitting on the crank and I can't figure out how to remove that.

    Can someone give me some sort of instruction on how to remove this? I see from the partsland diagram that there is a pin, circlips, and a bearing keeping it on the crank but how are those removed? I can't get a good angle to see how the work within the piston.

    Any thoughts?


  2. #2
    la90043's Avatar
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    first and most important.................cover the crank with a clean rag to keep things from falling into the cranks case youŽbe very sorry if it does. then with some needle nose pliers pull out the c clips on both sides of the piston pin. with the c clips out, tap out the piston pin from the piston. then your piston and bearing will come straight out...................

  3. #3
    Jug Inspector
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    BE CAREFUL! Messing up bearings or rods is not that hard to do. Everyone says to use a piston pin puller (it's a tool that costs about $15), but I never have. I just gently tap it out with a crappy tawain socket. I also use a piece of wood with a hole drilled in it behind the piston, this absorbs some of the shock of the hammer and helps keep the piston in place when tapping.

  4. #4
    www.springbreak-florida.com rgard32's Avatar
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    and you only have to take out 1 clip on one side..and just knock it out that way

  5. #5
    I got the rear and middle cylinders off and I took some pictures for some input from everyone on here.

    Under the crank on the rear cylinder, it looks like there is a significant amount of water in the bottom. The middle crank looks like it has a significant amount of rust on it.

    The first 2 pics show the rear cylinder and the other 2 pics show the middle cylinder.

    Any input?
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  6. #6

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    take a small screw driver like the ones you repair watchs and glasses with , pry the cir clip out , if the pin is seised lube it up then try againg

  7. #7
    Jug Inspector
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    Those look really lean. Rust on the crank is not a big deal, rust in your bearings IS. Unfortunately rust on the crank usually means rust on the bearings.

    How'd you get water in there? Or you bought it as a sunk ski?

  8. #8
    Water Bum Rodneyae's Avatar
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    I use a good pair of nedle nose pliers and pull it out.

  9. #9
    Tony's Avatar
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    Quote Originally Posted by Rodneyae View Post
    I use a good pair of nedle nose pliers and pull it out.
    Quote Originally Posted by 97sltx1050 View Post
    take a small screw driver ......pry the cir clip out , if the pin is seised lube it up then try againg

    I use a mechanic's scribe.

  10. #10
    i used an X-Acto knife, but my motor was pooped anyways, it did work though!! good luck

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