Removing Crankshaft drive insert

Discussion in 'Mechanic and Repair' started by rockytopp, Jan 13, 2007.

  1. rockytopp

    rockytopp LawnSite Member
    Messages: 120

    Ok Gang, I have a Kohler Model CH20 S --Ser.#2322214627 --Spec #64517

    This engine has a splined plug in the end of the crankshaft, it has small pin's (one on each side) that are drilled so as the pin lock's the center drive plug to the crank, It is as though they installed the plug and drilled on the meeting of the crank and plug so that the plug gets half of each one, A very good idea to keep it from coming loose but how do you get it out. I want to remove the plug, then machine another that is just smooth and step it down to 3/4 inch so that a gear,pulley and or coupling can be installed on it. As it is there is not any way such a conversion can be applied. If any one has removed one of these plugs I would like to know the secret. there is not enough clearance going through the splined hole as its only a half inch splined hole or perhaps a shade larger not over five eights in diameter. Originally it drove a hydraulic pump, I intend to use it for the same thing but need an out put shaft rather than the splined insert. Thanks for any and all help or suggestions. Paul
  2. fixer67

    fixer67 LawnSite Silver Member
    Messages: 2,098

    You need to post a photo of this and tell us what machine the engine is on or was on. I checked the numbers you posted and do not see anything like that. It may not be a Kohler thing but something the OEM of the machine it goes on did to it after they got it.
  3. khouse

    khouse LawnSite Bronze Member
    Messages: 1,465

    Sounds like a roll pin to me. A picture would be better. Can you just drive the pin out?
  4. rockytopp

    rockytopp LawnSite Member
    Messages: 120

    Ok, here is the pics. as you will see it is kohler, as to the application before I purchased the engine, unknown, it was on some type of hydraulic equipment. It is a twenty HP. and I would like to be able to insert another machine made shaft that will accept a coupling. thanks for the help, sorry I did not put pics in first post. Paul
  5. MowerMedic77

    MowerMedic77 LawnSite Bronze Member
    Messages: 1,164

    According to the spec it came out of something like this

    That crank is probably made special for that application and you may not be able to remove it. I may be wrong but you might have to replace the crank, maybe try calling Kohler and talk with someone in the tech. department.
  6. fixer67

    fixer67 LawnSite Silver Member
    Messages: 2,098

    That was what I was thinking from the start. That crank list for $200 by the way. Check with the makers of the machine it came off of and see what they say if calling Kohler does not help
  7. thecrankshaft

    thecrankshaft LawnSite Member
    Messages: 172

    This is a 9 tooth spline, have you been greasing the splines? How many hours on it? It is recommended to regrease the splines at around 500 hours I believe.

    9-Tooth Spline Replacement Kit PN 82 755 02-S SLP $62.57

    Attached Files:

  8. rockytopp

    rockytopp LawnSite Member
    Messages: 120

    what a life saver. thank you (Thecrankshaft) for your information, I can now proceed with my project. I do hope I can do the same for you or pass some other knowledge on to some one else that is in need. This is truly what this site is all about. I have printed it out and it will become a permanent page in my shop book of fix its. Again I wish to thank you....Paul.
  9. pugs

    pugs LawnSite Gold Member
    Messages: 3,025

    Yah, you would need to figure out what crank you would want in there and order a whole crank. There is nothing there for you to have turned down and you would need to pull the crank out to do that anyway.
  10. thecrankshaft

    thecrankshaft LawnSite Member
    Messages: 172

    Figured I'd post the other spline kits right away to help others in the future. Kohler crankshaft spline replacement kits are as follows and come with instructions:

    9 tooth PN 82 755 02-S
    11 tooth PN 25 755 27-S
    13 tooth PN 48 755 21-S

    Glad to help!

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