Kohler end play specs correct?

[formariz 11,994]

So as indicated on another thread one of my K91s has an unusual crankshaft end play at least compared to all others which look to have none. As per advice given I will not use it this way and I also don’t feel comfortable with that. I don’t believe an engine should have that kind of movement within its parts. 
 I am however confused by the specs Koehler gives for that particular condition. Specs are .004 to .023. That is a pretty wide range. My engine actually measured .013. I can just now visualize what the high side of accepted tolerance would feel like.  What am I not understanding?

[gwest_ca-(File Mod) 11,243]

Have a 1969 SM that lists the desired K90 and K91 crank end play as .0038-.0228 so not much different.

If one was to tip the engine left and right allowing oil to the thrust surfaces and bearings what the clearance would be?

 

Garry

[formariz 11,994]

1 hour ago, gwest_ca said:

Have a 1969 SM that lists the desired K90 and K91 crank end play as .0038-.0228 so not much different.

If one was to tip the engine left and right allowing oil to the thrust surfaces and bearings wonder what the clearance would be?

 

Garry

Will check it that way shortly.

[formariz 11,994]

So after tipping engine to both sides and leaving it for a bit clearance is .010. Noticeable also is sound clearance makes when pulling crank in and out. 

[oldredrider 2,553]

Cas, I use a rubber mallet to "move" the crank from one side to another. Might use that technique to see what the actual clearance is. Let us know.

[formariz 11,994]

32 minutes ago, oldredrider said:

Cas, I use a rubber mallet to "move" the crank from one side to another. Might use that technique to see what the actual clearance is. Let us know.

Referring to this Paul

 

[oldredrider 2,553]

I would pull the pan and check actual clearance. If there isn't oil in the engine, you may get that sound. Best, IMO, to check end play from the inside.

[squonk 42,525]

 went down the wrong coloum in the Kohler manual. It says .004-.023" If you're checking it on the outside, you need a dial indicator.

Edited August 11, 2021 by squonk

[formariz 11,994]

46 minutes ago, squonk said:

 went down the wrong coloum in the Kohler manual. It says .004-.023" If you're checking it on the outside, you need a dial indicator.

I didn’t actually use a dial indicator but I am pretty close to what it would measure.

.004 to .023 is a pretty wide range. It just doesn’t seem right to me in an engine. Essentially it goes from not being able to be detected by hand (.004) to one being able to move it visibly quite a bit. Mine is about .013 and is alarming. I can imagine what .024 will look like. That is almost 1/32”. In woodworking terms that is visible to the naked eye.