Jump to content

Nominations for Tractor of the Month
Garden Tractors and Parts on eBay



Photo
- - - - -

Kohler Knock Anyone?


  • Please log in to reply
23 replies to this topic

#16 Enginerod OFFLINE  

Enginerod

    Member

  • Senior Member
  • Member No: 1748
  • 205 Thanks
  • 268 posts
  • Location: WNY

Posted April 03, 2016 - 09:04 PM

In my experience its camshaft end play.


  • Trav1s said thank you

#17 AllisKidD21 OFFLINE  

AllisKidD21
  • Member
  • Member No: 78009
  • 7 Thanks
  • 14 posts
  • Location: Glencoe Ontario

Posted April 09, 2016 - 11:21 PM

What was causing the fuel restriction in yours? Was it a carburetor issue?

#18 dodge trucker OFFLINE  

dodge trucker
  • Senior Member
  • Member No: 19314
  • 1,439 Thanks
  • 1,897 posts
  • Location: kankakee

Posted April 10, 2016 - 12:49 AM

I have had 1 Kohler that knocked on me, I was headed to a neighbor;s 1/2 way aroun the block to mow, stated knocking about 1/2 way there, by the time I turned around and before I got home, it had blown the rod, I was less than 500' from home when it started knocking and I turned around, I got within 100' of my driveway when it died. this was on a Deere 214. I never did tear into it, sold the machine just like that.

 

I have rebuilt a few Kohlers, none of which had "blown up" but it seems that every  one of them needed to be both bored and to have the crank cut down.


Edited by dodge trucker, April 10, 2016 - 12:50 AM.


#19 MolonLabe OFFLINE  

MolonLabe

    Rust Wrangler

  • Senior Member
  • Member No: 59683
  • 411 Thanks
  • 215 posts
  • Location: Noblesville, In.

Posted April 11, 2016 - 06:04 AM

My only experience with a knocking Kohler was on my 416-8 with a Kohler Magnum 16. The engine knocked when I bought the tractor but I noticed that when I engaged the pto the knock disappeared. When you engage the pto on a wheel horse the crankshaft is side loaded hmmmm. Checked the crank end play with a dial indicator and it showed .045 inches which is way beyond the factory spec of .003-.020.

SAM_1168.JPG

 

Pulled the flywheel and bearing plate and removed the shim stack and measured them with a micrometer and removed enough to get it back to specs, in this case .005.

SAM_1162.JPG

 

Just guessing that a previous owner had the engine apart and added all of the shims in the gasket set to the bearing plate and put everything back together. The crankshaft drifting back and forth also affects the cam and balance gears. Lots of metal clanging around.

 

 


  • limebuzz, Bruce Dorsi and Trav1s have said thanks

#20 Fordman1955 OFFLINE  

Fordman1955
  • Member
  • Member No: 81902
  • 9 Thanks
  • 20 posts
  • Location: Winchester Indiana

Posted April 12, 2016 - 10:38 AM

Bought a ford lgt 145 a while back. It has a bad knock and smokes heavily. The PO started it so that I could hear and see it's issues and to prove the other systems worked. We put it on the trailer and rolled it off at home. Hasn't been started since. Summer project.
  • MolonLabe said thank you

#21 Trav1s ONLINE  

Trav1s

    Got points?

  • Senior Member
  • Member No: 5472
  • 2,603 Thanks
  • 3,750 posts
  • Location: Cedar Rapids, IA

Posted April 15, 2016 - 06:25 AM

After building the hotrod K301, I'd check cam and crank endplay.  



#22 Fordman1955 OFFLINE  

Fordman1955
  • Member
  • Member No: 81902
  • 9 Thanks
  • 20 posts
  • Location: Winchester Indiana

Posted April 21, 2016 - 08:59 PM

Thanks I'll check that when I get it apart.

#23 dodge trucker OFFLINE  

dodge trucker
  • Senior Member
  • Member No: 19314
  • 1,439 Thanks
  • 1,897 posts
  • Location: kankakee

Posted April 22, 2016 - 03:16 PM

On the last one I rebuilt I put the same amount of shim behind the cover plate as I took off and it still seems tight. I was gonna run it to the 1st oil change and see if it loosens up any once everyone gets seated in

#24 AllisKidD21 OFFLINE  

AllisKidD21
  • Member
  • Member No: 78009
  • 7 Thanks
  • 14 posts
  • Location: Glencoe Ontario

Posted June 07, 2016 - 08:18 PM

I've cured the knock! After thinking for a while about possible causes for a knock in an engine that's never been rebuilt, I decided to check the points gap. It had been set at .025! I think the factory specifications are between 18 and 22 thousands of an inch, but I had to reduce the gap to .012 to get rid of the knock. It still runs great with that gap set and it still has lots of power. Thanks to everyone who posted a reply to my topic.
  • limebuzz said thank you




Top