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Kohler K321AQS Piston # 237406


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#1 Thomas Wheeler OFFLINE  

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Posted April 11, 2016 - 06:26 PM

Does any one know if that is a standard size piston or is it an over sixed piston?

 

I have looked at the manuals and non seem to have this # 237406

 

thank you for nay help you can give me!

 

Tom


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#2 Auburn David OFFLINE  

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Posted April 11, 2016 - 06:39 PM

Looks to be standard..Not positive though http://www.repaircli...3337343036&mr=1


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#3 Bolens 1000 ONLINE  

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Posted April 11, 2016 - 07:02 PM

Thats not a part number thats a casting number

 

Check the top of the piston and see if any markings if nothing or you see a 'STD" "O"  or nothing its standard

 

Oversize will always have the size stamped right into the top of the piston.


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#4 M.Cain OFFLINE  

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Posted April 11, 2016 - 07:30 PM

I have also seen them factory that was.003  like the guys said look on top of the piston.


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#5 Auburn David OFFLINE  

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Posted April 11, 2016 - 07:33 PM

I learned something..thanks guys!



#6 lyall ONLINE  

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Posted April 11, 2016 - 08:18 PM

the standard bore for a K321 is 3.500"

the new standard piston size is 3.4945 max/ 3.4938 min

replacement sizes are .003, .010, .020 and .030


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#7 Thomas Wheeler OFFLINE  

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Posted April 12, 2016 - 09:50 AM

Thank you folks,

 

All I have at this point is that number 237406 stamped in the top of the piston.

 

I have been doing some more talking with techs and I am finding that on the inside of the bottom of the piston skirting, it should be stamp if it is .003 .010, .020 or .030 over, other wise it is standard.

 

I will have to pull the piston to look and see what it is! 

I will let you know what I find!


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