Kohler KT745 26HP 7000 series Motor Locked??

[gandl2123]

200hrs on this BadBoy Elite series. I've got her disassembled and was thinking I was going to see inter damage. None found. Eng is apart and crankshaft is stuck in the engine case bearing/seal area. Will not turn and I can't (so far) get it out. Imagine if there was just the main eng case and the crank, you could not turn the crank as it is stuck in the casing. Is there a bearing in there? (going to take the oil seal out and I do not believe there is a roller bearing in there. I just think it is an aluminum case with a bore hole and the crank rides in that holed home.

Question: What is the best way to get the crank to let go of the case.

And: How is this type of thing fixed. I was mowing with it, shut if off and placed it in the garage as she shut off, out of gas I presumed. Week later filled her up with fuel and tried to start her with just a click. Would not turn over, lubricant in cylinders 1-2 and nothing, could not turn it and would not budge any.

After disassembly the internals on the eng look great. It's just got it's nose stuck in the case. How is the best way to remedy this? Thank you for all help.

Greg
Augusta, GA

BTW I hear this Kohler failure is rare. Lucky me. ha

[gandl2123]

Can't seem to figure out how to load pics. Is it the (Img) above?

BTW I hear this Kohler failure is rare. Lucky me. ha[/quote]

[bgsengine]

Can't seem to figure out how to load pics. Is it the (Img) above?

BTW I hear this Kohler failure is rare. Lucky me. ha

We don't allow image uploading on the forum - we don't have the bandwidth to support hosting images. You have to upload images to other photo hosting sites and link to them. As for your crank jammed up in the bearing, I assume flywheel is off? (silly question I know..) I'd tend to suspect a high heat condition, may have to pop your flywheel back on with key and see if it will let you work crank back & forth a bit. Other than that I'd have to guess the sleeve bearing (which is what goes in the aluminum bore) may have galled and stuck to the crank, so you may have to go to a short block worst case scenario...

[KE4AVB]

And even then the images need to be 600 x 600 pixels are smaller. So you need to reduce your phone's image quite a bit.

No bearing persay other than the crankcase it self. Sound like the engine was ran extremely low on oil or you had an oil pump failure. Now aluminum is melted to the crankshaft top journal and there is no saving the crankcase; unless, a machine can machine and fit an aftermarket sleeve bearing drilled correctly for oil passage.

At least a short block is available most the KT745 under PN 32 522 10 but that will run around $785 plus shipping.

[gandl2123]

Great answer guys and I'm going to go ahead and get the oil seal out of there so I can get some nut-buster stuff in there. Then I think in an attempt to save the block on this 200hr bad boy I bought for $900 I'm going to heat the casing and mount her (hanging) over a 5 gal bucket with a couple 2x4's suspending the block...heat, taptaptap and see if I can get the crank under it's own weight with a little coaxing to drop into the bucket lined with stuff to make a soft landing.

Then, clean up the nose of the crank good and then hope that there is a pressed bearing in there (for God's sake why didn't they?) and if not then I do have an automotive machine shop that could maybe press in a bearing.

Any links to anyone who has tried that before. That would be cool and maybe save me a bit of money. I do think it was a heat issue as far as I can tell. I'm thinking a bone head one. drained oil, changed filter then stepped away and later came back and tried to mow with it....without oil. But not sure if that is correct as the bearing surfaces of the bearings, crank are in perfect shape no damage what-so-ever. The ONLY issue is a stuck crank in the end of the block. Very curious to me as I thought if that got hot enough from oil starvation and locked down due to oil starvation, then it would have happened to the rods/crank bearing surfaces too. And, if oil pump failure...is there a way (thinking so) that crank and rod would get oil from the rotation action and pumping action of the pump but that maybe the oil pathway to the crank main front bearing did not? Possible? I think so. I will try and find out once I get this crank to drop.

Also in closing any of you that reach to hear and want to see some detailed pics of my project just drop me a note/request at gandl2123@gmail.com Tks Gre in Augusta, GA Trying to turn some man's junk into my treasure.