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Can't pull flywheel

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mowermoss
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2017/10/16 16:47:23 (permalink)
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Can't pull flywheel

I am attempting to replace the flywheel key on riding craftsman mower pretty old, but cannot get the flywheel off.  I'm using the B/S puller 19203 and hand wrenches.  I've broken the bolt on the puller.  Can't get the flywheel to pop.  Any ideas?

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    AVB
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    Re: Can't pull flywheel 2017/10/17 05:56:19 (permalink)
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    I haven't use the Briggs puller. What I use is a harmonic balancer puller that is use on automobiles. I tighten down with an impact and smack the center puller bolt with a 2 lb brass hammer. This usually pops most flywheels loose. I had a couple that I had to re-tighten the center bolt and repeat. Also make sure you're using grade 8 or if metric grade 10.9
     
    I had only one flywheel recently that this didn't work on but it was already messed up by someone someone else that a big fat hammer directly on the crankshaft, a hammer and chisel to remove that nut, and an impact to tighten the nut. This was a 420000 series engine. All no-no's in my opinion.
    mowermoss
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    Re: Can't pull flywheel 2017/10/17 17:56:55 (permalink)
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    I'm trying to borrow harmonic balance puller. Is it possible to break it?  Here's a photo of the  B/S puller not getting anywhere with that but I've kept trying.  Looks like a tiny piece of the sheared key is jammed in there away from the channel.  Could that be enough to give me all this difficulty?  Is there anything else that could be locking the flywheel where it is?

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    Roy
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    Re: Can't pull flywheel 2017/10/17 20:14:20 (permalink)
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    What he said. Tighten the center bolt then with a pinch bar or large screwdriver under the flywheel in line with the key. Give the bolt a good smack with a 2 lb hammer, 99% will come off first try. If not tighten the bolt some more and give it another whack.
    noisey
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    Re: Can't pull flywheel 2017/10/17 23:00:37 (permalink)
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    try a hair dryer on hot or better yet a industrial heat gun around the flywheel hole around the crankshaft try to direct the heat away from cr.shaft and use the puller too if that don't work aaaaah! buddy I don't know what to say whack it harder.
    AVB
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    Re: Can't pull flywheel 2017/10/18 09:09:19 (permalink)
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    Use the nuts not the head of the bolt to pull. The bolts will bottom out and break. Also upgrade those flimsy grade 5 bolts to grade 8.

    mowermoss
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    Re: Can't pull flywheel 2017/10/18 16:38:03 (permalink)
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    Thank you guys... Using the harmonic balance puller did the trick.  Just goes to show, get the right tool.  The Briggs and Stratton puller as shown in the pic just did not work and actually broke.  Unfortunately, I replaced the broken flywheel key, put everything back together, and although it turns and turns, just doesn't start up.  I've been told I may have broke a rod, and that attempting to repair that would be too costly.
    Roy
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    Re: Can't pull flywheel 2017/10/18 22:29:25 (permalink)
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    Did you try squirting gas down the carb throat? Don't use starting fluid, it is very hard on aluminum cylinder walls. With the spark plug installed, turn the flywheel by hand. You will know the rod is broken if you don't feel resistance.
    Cmh3574
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    Re: Can't pull flywheel 2017/11/11 07:17:49 (permalink)
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    Heat center with torch and tap with hammer if threaded run nut down far enough to cover threads then try puller again but keep heated turn then tap front of puller and be patient
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