Pics of my Homemade Flywheel holder used on my 115

[rothfm]

Maybe this will help others...

I had my Johnson 115 powerhead on the workbench (with flywheel), and needed a cheap way to hold things still to remove the nut and while using a puller. Made a simple wooden holder-See pics

The "arm" portion is long enough to rest solidly on the bench. The Circle has a large hole to accomodate my 1 5/16" Socket, and it has the 3 holes for the Flywheel threaded bolt holes. I used two identical pieces of 3/8's (I belive) screwed together to make it rigid.

Worked great taking the nut off. Now its on flush up against the flywheel with the Harmonic puller over it, with 3 bolts threaded thru and into the flywheel while I'm tightening daily to get it to pop off. No Pop yet, but should one of these days.

If anyone knows how much I should actually crank on the puller bolt?? I'm using a 1/2" drive Ratchet that is about 8" long, its pretty tight. Havent used a breaker bar on it. Its been on 2 days, and I am lightly tapping it with a brass hammer occasionally then tightening a bit more.

Oh, I used those very long heavy cable ties to tie it thru the bench to hold it down while cranking.

 

[HighTrim]

Re: Pics of my Homemade Flywheel holder used on my 115

Well I have never seen anything like that before!

Be sure to pull up on the flywheel when you rap the center bolt with the hammer. You may need a much longer bar to pop that flywheel. I use a length of pipe sometimes 3' long to give me the torque to pull on the bolt.

If you remove the nut with an air wrench you dont even need to hold the flywheel.

Pullers with an arm really help to hold the flywheel when cranking the center bolt.

 

[boobie]

Re: Pics of my Homemade Flywheel holder used on my 115

You have a chance of bending the puller bolts by holding it that way. The OMC puller has a bar that goes into the puller to hold it in a stationary position while applying pressure to the center bolt to keep from bending the bolts that go into the flywheel.

 

[rothfm]

Re: Pics of my Homemade Flywheel holder used on my 115

haha, Thanks...But it worked well. Yes, only the 8" ratchet so far as I wasnt sure how much to crank it and didnt want to strip the 3 holes. Will go a couple days then put on my 18" breaker bar for a bit more Umphh.

Thanks

 

[rothfm]

Re: Pics of my Homemade Flywheel holder used on my 115

You have a chance of bending the puller bolts by holding it that way. The OMC puller has a bar that goes into the puller to hold it in a stationary position while applying pressure to the center bolt to keep from bending the bolts that go into the flywheel.

Sorry boobie, the haha was for the prior post about not seeing my contraption before. I read your posts all the time. Yea, it got the nut off fine, and I'm watching for any flex pressure on the bolts now that i've got the puller in place. So far so good. I'll be careful when moving up to the larger breaker. I've seen pics of the original OMC model.

 

[boobie]

Re: Pics of my Homemade Flywheel holder used on my 115

No problem and good luck. Hope it works.

 

[HighTrim]

Re: Pics of my Homemade Flywheel holder used on my 115

Thread the bolts in 7/16", no more, no less

Any less and you will strip the threads. Any more, and you may catch something

Mark the threads of the bolts with a sharpie so you know how far to thread them in, or use shoulder bolts, or use a piece of shrink wrap on over the length of the bolt not to be threaded in.

 

[rothfm]

Re: Pics of my Homemade Flywheel holder used on my 115

Good tip...When I started I chased the holes, and was surprised to find they are 18thread vs 24. The tap went in smooth and nicely. The PO may have done something there. The 3 bolts run in nice, but I need to be careful as I'm Leary they will pull out.

Thanks.....fingers crossed it pops soon.


mark

 

[rothfm]

Re: Pics of my Homemade Flywheel holder used on my 115

Thanks all....Put my 18 breaker on it, about a 1/2turn of the Nut and it Popped the flywheel. Scared me! So happy. All case bolts have loosened and now I can get in and take it apart further.

Little wooden tool worked aok.

 

[V153]

Re: Pics of my Homemade Flywheel holder used on my 115

My buddy Billy Bob the welder cobbled this lil gem up for me. If'n ya use yer nuts & bolts carefully it doubles as a flywheel puller.

 

[gm280]

Re: Pics of my Homemade Flywheel holder used on my 115

It looks like it should work. You simply increased the amount of torque it takes to move it now. I too had a difficult time removing an ouboard fly-wheel. I broke two sets of bolts (literally pulled the bolts apart lengthwise and that takes some doing too) and finally figured out that unless I get some grade eight bolts I was simply going to continue breaking bolts too. So off to the local hardware store and bought three (actually four, one for a spare just incase) grade eight 1/4 by 20 bolts for my engine. Then I used an impact wrench with my puller and that even took some doing to pop it off. But grade eight bolts threaded in like "HighTrim" stated is very important for sure. If you don't thread them in far enough, you will pull threads..NOT GOOD! :blue: And if you do turn them in too far you can hit something and break it as well...again not good! :grumpy: HT has the exact measurements... Good luck!

 

[phillnjack2]

Re: Pics of my Homemade Flywheel holder used on my 115

Its strange that the flywheel is so hard to pull off, as when i just toqued mine to 100ft lbs, it dont seem that bad.
yet when i was undoing mine i needed a very long pole to undo the nut.

getting flywheel off seemed like it would never come off, but when it did i also thought something had broke when i heard the pop.
very good to hear that everyone has the same sort of problems when trying to get the flywheel off for the first time.

the wooden flywheel holder is a good old fashioned piece of bodgeneering, proper caveman tooling,but if it wirks then its a good tool.
if it dont work its just a piece of wood.
No reason not to make a metal version and keep the thickness just right at the flywheel end to make surethe threaded bolts go in
the correct distance.
a metal one would also help keep the bolts from bending at same time.

not to sure about using impact gun on the flywheel puller, i know its an easy thing to use,but also not as precise as a pry bar on a socket.
there is one on youtube wherethe impact gun destroys the puller by cracking the main yoke !!!!!!!!!!!!!!!

glad to know youve got your flywheel of though, and good luck with the rest of your work.


phill