Stubborn pony flywheel D6

you can apply heat but don't beat on it as it will loosen the rear main bearing dowel pin. give it a good soak with some penetrant such as kroil as well. are you using an H-bar type puller and the puller holes? can you get a hollow hydraulic cylinder under your puller? if you are using a jaw puller you can break the flange for the pull rope.

I am using an H bar type puller. It has worked great on pony motors in the past. I will soak it for a couple days while I tend to other things . I'll try one more time before warming it up a bit. Thanks

Heat it. There should be no problem from that...........unless you wave the torch too close to the pony gas tank! Freeze spray is going to be hard to get to the shaft without also spraying the hub at the same time.

Remember to leave the nut on but loosened a few threads because it may come off with a bang and you don't want to be grabbing that HOT chunk of iron trying to control its fall into the bowels of the tractor.

cc is correct. Might take lots of heat to the flywheel for it to loosen its grip. If you have a heavy duty puller use an impact gun. Then you can get lots of pull without lots of effort holding back up.

It's been mentioned to tap the circumference of the flywheel as well i.e. tapping radially toward the center of the shaft. The other approach I've heard of on sprockets is to set the puller up nice and tight and then walk away. Come back tomorrow and it might be off. Haven't tried that one myself but will. I have to to re-bearing my 5U's pony so will try that leave-it-overnight technique. I should probably turn off the shop heater so I get some creep going on as it cools down from the balmy 60 that it is in there : )

The first one I pulled, I didn't have the right puller and didn't want to brake the flanges. I got it as tight as I was comfortable with,put heat to it and went away. It took from 10 to 30 minutes and I heard a noise and it had popped. I have used a anti seize product on them when going back together even though the book says install dry,never had one come louse yet and never had to us heat to get it off.

Well, it was not easy but I got the SOB to pop loose. I tried loading the flywheel under tension with a puller, and then heated the flywheel, for about 30 minutes with a rosebud tip. Nothing.

Adding to my joy was the discovery in the key way of a crack. Unlikely that I can reuse this flywheel.

I could not find a bigger puller that I wanted to buy. So, I bought a low profile 12 ton bottle Jack that would work on its side.I welded a couple of grade 8 bolts together to reach a 3/4 thick plate I put behind the Jack.

It took a LOT of pressure on this Jack to pop the flywheel loose. When I reinstall it will have some anti seize.

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Your a fine welder Jack (TOGNOTS's name). Must of had good penatration on the bolts.

I bet you were a little nervous putting all that force on your homemade puller assembly.

Did you wear your safety glasses? LoL