Jump to content

Garden Tractors and Parts on eBay



Photo
- - - - -

74 Deere 112 engine rebuild Kohler K301

k301 cylinder bore rings cylinder sleeve

  • Please log in to reply
33 replies to this topic

#16 Trav1s OFFLINE  

Trav1s

    Got points?

  • Senior Member
  • Member No: 5472
  • 3,103 Thanks
  • 4,241 posts
  • Location: Cedar Rapids, IA

Posted April 09, 2017 - 11:55 AM

My 312 threads shows pics of the two blocks that Deere used.  If I have figured out the madness correctly I believe the "ear" type blocks came into use in the later 200 series all closed frame 300 series (300/312/314/316 with the Kohler)


  • augustn1 said thank you

#17 augustn1 OFFLINE  

augustn1
  • Member
  • Member No: 86412
  • 29 Thanks
  • 20 posts
  • Location: southwest Michigan

Posted April 10, 2017 - 12:18 AM

We finished stripping the block and washed it up today. 

 

Governor shaft is fairly worn.

Second inspection of the crank bearings revealed one was spun out, the other's race was too worn

No cracks in the block. 

crankshaft bearing shoulders both measure good.

camshaft and pin look good

valve tappets look good

 

One of the bearings had ID on it other one didn't: MRC 308S, through Motion Industries they are kind of salty. I found some on ebay for a lesser price. dimensions are 40mm ID, 90mm OD, 23mm W. They retail for around $52 and substitutes are available for $20 and up. The difference seems to be the radial play specifications. C0 versus C3. I found a good website called astbearings.com that explains this fairly well. On further review, the C3 specification states that the operating range temperature for the bearing is up to 248f. The C0 bearing was the one that spun out. By specs it's a tighter clearance bearing so as it it heated up and expanded, it may have bound up therefore causing it to spin on the crankshaft....in my  opinion.

 

At this point I'm still leaning to sleeving the bore. I know it's more expensive, I trust the guy doing the job and have seen his work before. He's bored and sleeved many cylinders. I'm leaving it up to him to make the call when he looks at the block. I want to give this block a chance to fight another day, plus it's a good learning experience for us if we go through with it. Attached are additional pics from today. We did try to hone the bore before we came to our senses regarding measurements. Pic attached shows hone, scores and ridge line at top. In hindsight trying to hone was a waste of time for sure. Chalk it up to live and learn. 

Attached Thumbnails

  • 20170409_2023331.jpg
  • 20170409_2023571.jpg
  • 20170409_2024191.jpg
  • 20170409_2025141.jpg
  • 20170409_2025261.jpg
  • 20170409_2147341.jpg
  • 20170409_2207501.jpg
  • Screenshot_20170410-0037181.png

Edited by augustn1, April 10, 2017 - 03:47 AM.

  • boyscout862 said thank you

#18 augustn1 OFFLINE  

augustn1
  • Member
  • Member No: 86412
  • 29 Thanks
  • 20 posts
  • Location: southwest Michigan

Posted April 12, 2017 - 11:46 PM

Sweet score from amazon warehouse deals arrived today. FAG crankshaft bearings. Made in Korea but for the price I'm good on receiving them. I was naive to think they are actually still made in Germany,anyway I got $35+ bearings for less than $3 each. 

Attached Thumbnails

  • Screenshot_20170410-1330571.png

Edited by augustn1, April 12, 2017 - 11:58 PM.

  • boyscout862 said thank you

#19 augustn1 OFFLINE  

augustn1
  • Member
  • Member No: 86412
  • 29 Thanks
  • 20 posts
  • Location: southwest Michigan

Posted April 15, 2017 - 08:17 PM

Standard size rings and piston arrived today. Taking the block to the machinist Monday. 


  • boyscout862 and TomLGT195 have said thanks

#20 augustn1 OFFLINE  

augustn1
  • Member
  • Member No: 86412
  • 29 Thanks
  • 20 posts
  • Location: southwest Michigan

Posted April 17, 2017 - 07:43 PM

Dropped off the block and standard piston this evening to the machinist. Hopefully get it back early next week. He's also going to press in a new exhaust valve guide and touch up the seat. He said in the past in one year he's done up to 200 sleeve jobs and is familiar with the Kohler engines.
  • boyscout862 said thank you

#21 augustn1 OFFLINE  

augustn1
  • Member
  • Member No: 86412
  • 29 Thanks
  • 20 posts
  • Location: southwest Michigan

Posted April 19, 2017 - 01:28 AM

To be on the safe side, I ordered a set of cam shims today. Don't want my new rebuild to knock. Also picked up some ring pliers and feeler gauge set. Getting antsy to hear this thing run again.
  • boyscout862 said thank you

#22 augustn1 OFFLINE  

augustn1
  • Member
  • Member No: 86412
  • 29 Thanks
  • 20 posts
  • Location: southwest Michigan

Posted April 21, 2017 - 07:07 PM

Project of the day was to paint the brackets for the engine and to repair the air cleaner cover. I'm not sure how the hole got in the cover, my best guess is it ran loose for a long time and wore a hole in it. The previous owner ran it with a fender washer holding it on. Not exactly an air tight fit. The engine ate a lot of dirt.  So I went and got some brazing rod, and rounded up my map gas torch. 

 

I found two other fender washers and a 1/4-20 bolt and nut. Roughed up the washer I was brazing to remove the zinc where I wanted to weld, and also roughed up the air cleaner cover. I used 220 grit. Then I centered the washers and snugged them down with the bolt. Did the weld, removed the flux, and did a half ass job at smoothing the braze. Wire brush and more 220 grit. Decided to paint. Used rust oleum 500f gray primer and 500f semi gloss black. More pics of the brackets on the way, they are still under primer. 

Attached Thumbnails

  • 20170421_1613441.jpg
  • 20170421_1619321.jpg
  • 20170421_1632241.jpg
  • 20170421_1711021.jpg
  • 20170421_1913141.jpg

Edited by augustn1, April 21, 2017 - 07:19 PM.

  • KennyP, boyscout862, TomLGT195 and 1 other said thanks

#23 ACmowerguy OFFLINE  

ACmowerguy
  • Senior Member
  • Member No: 67204
  • 384 Thanks
  • 354 posts
  • Location: Winfield, MO

Posted April 21, 2017 - 08:24 PM

Nice repair on the air cleaner. As far as sleeving, it sounds like your guy has good luck with it so I wouldn't be scared.


  • boyscout862 and augustn1 have said thanks

#24 boyscout862 ONLINE  

boyscout862
  • Senior Member
  • Contributor
  • Member No: 8923
  • 12,168 Thanks
  • 8,884 posts
  • Location: N.E. Connecticut

Posted April 21, 2017 - 10:57 PM

Sweet score from amazon warehouse deals arrived today. FAG crankshaft bearings. Made in Korea but for the price I'm good on receiving them. I was naive to think they are actually still made in Germany,anyway I got $35+ bearings for less than $3 each. 

Are these crankshaft bearings for the Kohler?  I still haven't started to put mine together because of other priorities. Good Luck, Rick


  • augustn1 said thank you

#25 augustn1 OFFLINE  

augustn1
  • Member
  • Member No: 86412
  • 29 Thanks
  • 20 posts
  • Location: southwest Michigan

Posted April 22, 2017 - 12:53 AM

Nice repair on the air cleaner. As far as sleeving, it sounds like your guy has good luck with it so I wouldn't be scared.

Thanks, I couldn't think of a better way to salvage it. I didn't want to try to mig weld it in case it warped the housing. For the sleeve job I trust the guy and the way he described how he does it I have no worries at this point. Pics will be posted as soon as I get it back from him. 



#26 augustn1 OFFLINE  

augustn1
  • Member
  • Member No: 86412
  • 29 Thanks
  • 20 posts
  • Location: southwest Michigan

Posted April 22, 2017 - 01:01 AM

Are these crankshaft bearings for the Kohler?  I still haven't started to put mine together because of other priorities. Good Luck, Rick

Yes, those are the bearings I'm going to use. I believe they meet the specifications required for the application. I got lucky and got them on a deal. This brand of bearing, along with SKF, Browning, and Timken are all brands I've seen work for a very long time under 24-7 production conditions at my employer. Hopefully I don't have to eat my words within the first year of mowing ha ha.


  • boyscout862 and TomLGT195 have said thanks

#27 augustn1 OFFLINE  

augustn1
  • Member
  • Member No: 86412
  • 29 Thanks
  • 20 posts
  • Location: southwest Michigan

Posted April 22, 2017 - 01:56 PM

Painted the fuel tank and assorted brackets today. 

 

Still messing with the air cleaner assembly. The threads were bummed up on it so my first thought was to make some kind of sleeve and stopper to go over it. Then I found a coupler nut to do the trick. I threaded it on then fitted the filter and cover, it was almost perfect length. Then filed one end of the coupler nut flat so give the cover a little more room to clamp on the filter. The wing and cover itself seat on the coupler nut. Hopefully it makes the seal I want and doesn't rattle loose when it's running. 

Attached Thumbnails

  • 20170422_1424181.jpg
  • 20170422_1426271.jpg
  • 20170422_1427181.jpg
  • 20170422_1432541.jpg

  • KennyP said thank you

#28 augustn1 OFFLINE  

augustn1
  • Member
  • Member No: 86412
  • 29 Thanks
  • 20 posts
  • Location: southwest Michigan

Posted May 05, 2017 - 08:43 PM

Ok not much to update now, I'll be doing some maintenance on the tractor chassis this weekend if it doesn't rain. The plan is to find and grease all the grease points, change the gear lube in the rear axle, and check all the wiring. If I find anything interesting I'll start a new thread.

The engine block should be finished soon.

Edited by augustn1, May 05, 2017 - 08:44 PM.


#29 jeeper4life OFFLINE  

jeeper4life
  • Member
  • Member No: 32496
  • 38 Thanks
  • 63 posts
  • Location: Fort Wayne, IN

Posted May 08, 2017 - 01:27 PM

Cool so far, looking forward to seeing how the engine turns out


Sent from my iPhone using Tapatalk
  • augustn1 said thank you

#30 augustn1 OFFLINE  

augustn1
  • Member
  • Member No: 86412
  • 29 Thanks
  • 20 posts
  • Location: southwest Michigan

Posted May 16, 2017 - 09:39 PM

Still waiting for the block to get done, I promise. In the meantime I'll work on the mower deck and get some repairs finished that I was going to do this winter.

Edited by augustn1, May 16, 2017 - 09:39 PM.






Also tagged with one or more of these keywords: k301, cylinder bore, rings, cylinder sleeve

Top