16A mower

BradTX · Aug 15, 2010

I give up. I'm trying to get the wrist pin nut off the flywheel shaft on a 16A sickle mower so I can replace the pitman arm. I've tried heat and penetrating lubricant both with no luck. Any ideas on how to crack this nut? Is it by chance reverse threaded? All ideas welcome. thanks!

Charlie M · Aug 15, 2010

I think it is a reverse thread on IH mowing machines. Its been a while since I took one off.

oldhousehugger · Aug 15, 2010

If all else fails take a sharp cold chisle and cut the nut off. If you can get an angle grinder in there grind one side off to expose the threads and then knock it off. A nut can always be found to replace that one.
John

oldhousehugger · Aug 15, 2010

And did you check for a cotter pin or some kind of other locking device?

TWheat · Aug 15, 2010

It is a left hand thread. Be careful, they are hard to find if you have replace that counter shaft pulley.

BradTX · Aug 15, 2010

By left hand thread, do you mean left hand on or left hand off?

TWheat · Aug 16, 2010

Or has been said, reverse,eg righty loosen, lefty tighten

Farmallhal · Aug 16, 2010

Brad, if it is a left hand thread it would screw on by turning to the left or counterclockwise. To remove a left hand thread nut turn it clockwise or too the right looking at the threaded end where the nut is. Good luck, Hal.

BradTX · Aug 16, 2010

A little more fight and I finally got it off....turning it the other way. I really had that sucker tightened up after a day of fighting with it. What a knucklehead! I also know why ScottyHOMEy likes his wrenches that are graduated in 32's. I never used a 31/32" wrench before this but it was invaluable. Thanks Grandpa for passing down the old tools and thanks everyone for the help, ya'll are great.

16A mower

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