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Which Cylinder is #1 ?


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12-05-12, 04:29 PM   #1  
Which Cylinder is #1 ?

Kohler k582 engine. completing rebuild and trying to install pistons in right cylinder and position.

One rod has a 1 the other rod has a 2.

the manual says to position pistons so that "the raised portion of the rod and caps faces the flywheel"............what are these raised portions?

which cyl is number 1?

thanks!

Ed

 
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12-05-12, 10:07 PM   #2  
#1 is closest to the flywheel.


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12-06-12, 08:44 AM   #3  
cheese thanks for the info.

Any idea about the "raised portions" on the connecting rod?

my problem is this: I bought a new, old stock shortblock for my K582. I dont know if it was ever taken apart or not. I took it apart to check internals. Now, when putting back together, I am checking eveything.

The piston has a stamp on it with an arrow that says "flywheel". If I aim the arrow toward the flywheel, the markings that I would guess the book refers to on the connecting rod would be away from the flywheel.

Any way to know which way the rod is supposed to be turned?

Pistons and rod are new Mahle style.

thanks!

 
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12-06-12, 10:28 AM   #4  
Usually there is a bump cast onto one side of the cap and/or rod. Often it is at the bolts that go through the cap. Sometimes the area around the bolt holes will be built up heavy on the flywheel side and concave on the other side.


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12-06-12, 10:47 AM   #5  
yes, I see those markings on the rod and cap by the screws. the problem was that the way the piston was on the wrist pin, I either had to put the rod markings OR the piston arrow toward the flywheel.

I decided to keep them both happy by pulling the wrist pins, and switching the direction of the piston fly wheel arrow to be on same side of rod marks.

I have installed pistons now. The poorly detailed Kohler manual says to use 17ft lbs on the 5/16 cap bolts. seems like a little bit low, but I followed the book.

also, the cap bolts had only flat washers, no spring washers. Is this common?

thanks again for your help!


Last edited by 84EdH; 12-06-12 at 11:00 AM. Reason: clarify
 
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12-06-12, 03:54 PM   #6  
It's been a few years since I was into one of these, but what you describe sounds accurate without consulting a book. Sounds like you made the right call. Rotate the engine and watch to be sure everything clears as the engine makes it's revolutions through the cycles. If so, I'd say you're good to go.


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12-06-12, 06:10 PM   #7  
well this is my first time tearing an engine down this far. it has been a real learning experience.

the crank turns and the pistons clear everything, so I think it is fine.

thanks for your help!

 
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12-06-12, 07:20 PM   #8  
No problem, hope it works out for you!


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