VERY Stuck Flywheel

[crosbyman]

snowblower silicone  from dupont is extremely slippery stuff. if you can heat up the flywheel …… soak the crankshaft  with it.

 

 

capilary action should let it  soak in

Dupont Teflon Snow & Ice Repellant, 284-g | Canadian Tire  $14    on  AMAZON  35$$   carefull !!

patience brings joy

Joining AOMCI has priviledges 🙂

[green-thumbs]

Flywheel on 3hp OMC just would not release so I went online to see how pros did it. 2 step method first install puller and apply pressure (not too much as it is s a pot metal flywheel) Step #2 swat
with rawhide mallet alternately on opposiet sides of top of flywheel.
I tried it and found immediate success. The alternate swats rocke the flywheel juste enough to release the grip and the tension of the puller does the rest. A slick trick that seems to be routine for time is money mechanics. I was a little concerned that it might be a little rough on a pot metal flywheel so use with caution.
Louis

[frankr]

I have an extra OMC flywheel puller sets as previously described by Buccaneeer and aquasonic. Once i get al the pieces and parts gathered u, I’ll post it for sale on the classified ads pages.

Frank

[jeff-register]

One item not brought up is not to put the bolts in too far & damage magneto parts! Yes time is on your side. I had a frozen brake emergency brake cable & used a floor jack to pull on the cable, the sheath was supported & it took 4 days before it broke loose pouring atf down thw cable every day. Be patent & use the puller shown, but don’t over stress & pull the threads out of the flywheel. Give the center bolt a few taps every day & tighten again. DO NOT hit hard as you are stressing the crankshaft. Good luck Think this one is hard try a Mercury flywheel!!

[T….in Wisconsin]

Good advice.

I have an A-25 with a stuck flywheel. I’ve tried all the tools & methods mentioned to no avail. Being midfull of the coil, I plan to raise the temp of the heat/cool cycle a bit. Does anyone have temp readingsthat have been used?

 

 

[Brian Grigsby]

I use a pneumatic air hammer with a flat end.  Like you would use for rivoting.  Adjust the pressure just right.  Can be used with your puller installed with pressure applied.  If it doesn’t pop off after a few raps then I’d stop so you dont mess up crankshaft.  It’s worth a shot.  Brian.

[Rkymtn57]

Thank you all for your help , unfortunately I ended up taking it off in pieces.

A Dremel mini metal cutoff wheel worked great.  Using great care i split each side of the steel hub not quite down to the spindle.

Then with a chisel and one blow it easly split apart and fell off.    Thank again ! D

 

[Michael Wyse]

With tricks I have used, I would soak the center of the flywheel with some penetrating oil, where the threads are for the nut, so the lubricant can hopefully sink down to where the flywheel is making contact with the crankshaft.

Like what the “Boat House” previously said, I would also recommend to get the flywheel puller very tight, or as tight as you want, and use something like a rubber hammer and tap it on the outside of the flywheel, or like what the Boat House said, use something like a piece of wood that can protect the flywheel if hitting with a regular hammer.

Though I have also used an Air gun on the puller, I don’t completely recommend this, because not everyone has an air gun and because its a good idea to have a pretty large air tank and compressor, and because you could break something. But the air gun won’t spin the flywheel, everything goes into what it is tightening or loosening, but the vibrations also help freeing the flywheel, I don’t use this trick unless I’m sure its okay to use.

[nj-boatbuilder57]

By all rules of basic chemistry, this shouldn’t work….but it does:  For a penetrating solution, mix up some 50/50 ATF & Acetone.  Where all other penetrating lubricants fail, this works.  I don’t know if it’s the transmission fluid or the acetone, but magic happens when you mix them together.

 

EDIT:  oops!  I see that you already broke it off.  Oh well.  Next time!  (and there’s always a “next time”… 🙂 )

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