Can not remove flywheel on 62 Evinrude 40hp.

[outlawfox13]

Re: Can not remove flywheel on 62 Evinrude 40hp.

Well i did as you said, and still nothing. Im loosing my patients on this motor, and about to scrap parts off it to cover my losses. I really dont think the flywheel will come off, its almost like its welded on or somthing.

 

[MWG2600]

Re: Can not remove flywheel on 62 Evinrude 40hp.

Walk away from it for a couple days or a week, It always helps me get the difficult parts off.

 

[kodibass]

Re: Can not remove flywheel on 62 Evinrude 40hp.

I agree with MWG2600 , don't get frustrated with it, You are doing everything correctly, and will get it off. You are actually doing a good job. As you have not broke anything or resorted to a bigger hammer. Aluminum expands 3 times faster than steel when heated, so what I would do next , with a propane torch, heat the flywheel not smoking hot! heat out from the flywheel nut about 1 inch. in a circle then let it cool, once cool heat the crankshaft with the nut on it, then let it cool, continue this alternating heat arrangement for the better part of say the weekend whenever you have time to heat it a bit. The idea is to expand the flywheel & shaft to break the corrosion bond. make a mixture of 50/50 acetone to auto trans fluid and spray on flywheel/crankshaft. Remember 50 years is a long stuck, in the big picture what is 15,20,40 days to save this FANTASTIC mechanical wonder, you will be so glad you did. many more options yet to try, your just getting started,,,you'l get it.

 

[outlawfox13]

Re: Can not remove flywheel on 62 Evinrude 40hp.

I have tried heating with a propane torch, but I was just heating around the crank shaft. I will try this method, but I am real tempted to get rid of her all together. I'll also grab some acetone today to try that. what exactly does the acetone and trans fluid do? Does it penetrate the bond? Ill also get a new puller and crank it down while I heat it. Ill leave it on for a week, hopefully she breaks free. If I cant get it in a week or two, she will beome parts. Ill update if/when I get the flywheel off. Also any other tips would help.

 

[HighTrim]

Re: Can not remove flywheel on 62 Evinrude 40hp.

When you do this prop the motor up with 2-2x4's, 1 on either side under the flywheel, so you have gravity on your side and when you hit the puller bolt all the energy is going to break the bond. I really hope some genius did not put Loctite on it like FR mentioned.

Reading over your posts a couple times, Im wondering exactly how you are using your puller? I'm sure you know how to use it, but just to be certain, you are threading in the 3 grade 8 bolts exactly 7/16", then using the center main bolt to crank down on right? It almost sounde like you are tightening the 3 puller bolts?

You should also get some help. A guy to hold the flywheel while you pull on the wrench on the puller bolt. Like I said, get a long 3' or so extension on her so you can get some real torque and PULL. A couple of the Big Twins I needed help with. Could also use a screw driver to wedge between the teeth on the flywheel and something solid on the powerhead to keep it from moving if you are not getting a good grip with the spanner.

I have heard alot of people talk about the ATF/Acetone mix. I dont know, I have tried it a few times but never really had much luck. I find good old PB Blaster is the best for me for penetrating bonds and freeing them up. You can actually watch that stuff climb into all the crevices!

 

[outlawfox13]

Re: Can not remove flywheel on 62 Evinrude 40hp.

The spanner wrench I built is a peice of 5/16th flat steel(about 6 inch long by 4 inch wide), and I welded it to square bar that is about 3.5 feet long. Then I drilled out two holes to match up to the outside flywheel bolt holes(I drilled it so it bolts to one then to the second bolt over, so it skips one to spread out the area). believe me this spanner wrench holds very well and torques great. I am using the puller correctly I screw the grade 8 bolts down 7/16 of an inch, I even count the threads so I know its level, then I crank it down in the center. I wish I knew why it wont budge as it is a nice looking motor and is very clean under the hood.

 

[steelespike]

Re: Can not remove flywheel on 62 Evinrude 40hp.

I haven't done a 40hp flywheel but when I go after a flywheel I figure I'm going to tighten and pound till something moves.
Grease the threads on the center bolt and its tip Be sure the bolts are evenly inserted.Have someone pry up carefully on the flywheel
I usually put a big beefy screwdriver across the puller bolts and center bolt to hold the flywheel while cranking down.
Keep it low to minimize strain on the bolts.Crank and whack,crank and whack till something lets go.
You could try putting a cup around the crank pack it carefully with dryice Perhaps applied from a CO2 fire extinguisher. try to get the crank shrunk before it freezes the flywheel.

 

[kbait]

Re: Can not remove flywheel on 62 Evinrude 40hp.

I like the heat-up then ice to shrink the crank.. worth a shot. My dad successfully used this to remove a lug bolt (older style..not lug nut) on a pickup truck I had. I was positive I'd have to snap it until he tried that. Good luck! and careful w/heat on aluminum...

 

[Willyclay]

Re: Can not remove flywheel on 62 Evinrude 40hp.

Then I drilled out two holes to match up to the outside flywheel bolt holes(I drilled it so it bolts to one then to the second bolt over, so it skips one to spread out the area).

Does this mean you are only pulling on TWO bolts? If yes, I believe you need to drill another hole in your flat steel plate and use all three holes in the flywheel. Like you, I made my own puller out of steel plate. Good luck!

 

[kfa4303]

Re: Can not remove flywheel on 62 Evinrude 40hp.

Hi outlaw. Here's a link and a pic on how to use the puller correctly. Hope it helps.

http://www.duckworksmagazine.com/06/columns/max/index8.htm

 

[James R]

Re: Can not remove flywheel on 62 Evinrude 40hp.

I have never failed to pull a flywheel. Some are tough. I use the balancer puller which is pretty strong and the necessary bolts with thick washers. I make sure that the puller center bolt is in line with the crank shaft. I use a 1/2 inch air impact gun at up to 120 psi if necessary. Load the puller up and leave it a short while. Go back and load it some more if you can then give the puller bolt head a whack with a hammer. Don't worry it won't go anywhere when it pops. So far I have not found any damage to anything and I have been using this method for some years.

 

[outlawfox13]

Re: Can not remove flywheel on 62 Evinrude 40hp.

No offense to anyone, but if your gonna post a reply, please read the whole post. I built a spanner wrench not a puller. I know how to use a puller and have removed flywheels before. I am having trouble getting this flywheel to break loose. Like i sad before no offense, i just dont need advice that is not relevant to my situation.

 

[tx1961whaler]

Re: Can not remove flywheel on 62 Evinrude 40hp.

Get a 2 foot piece of 2x2. Put it pointing upwards underneath the flywheel. With the puller cranked down tight, whack the **** out of the 2x2 (upwards) with a sledgehammer. Tighten the puller again and repeat on the other side of the flywheel.

 

[outlawfox13]

Re: Can not remove flywheel on 62 Evinrude 40hp.

Im thinking the reason the bolts broke before, was because they were 3" long, and the strain of cranking the harmonic balancer down cause em to sway a bit, then eventually break. I have since bought shorter ones and made washers out of 3/8 flat bar. I am picking up a new puller tommorrow, and will try again. But if i dont get it, i swear it will meet my sawzall. I will try the 2x4 method as well. Thanks

 

[kodibass]

Re: Can not remove flywheel on 62 Evinrude 40hp.

The acetone is acidic, it will help to eat away at the corrosion and allow the ATF which is a lubricant by design which flows easily. You want to repeat the heating & cooling many times over the week, this will help to break the corrosion bond & allow the chemicals to do their job, Also light tapping with a hammer for a min. or two on the flywheel each time you do the alternating heat/cool cannot hurt. Be very careful on how much prying pressure you do near the outer edges of the flywheel they can warp.

 

[F_R]

Re: Can not remove flywheel on 62 Evinrude 40hp.

Phooey. It's cold up there in Maryland. You need a vacation in Florida. Bring that motor along with you and I'll get that flywheel off. Well, maybe not if it is Locktited.

 

[James R]

Re: Can not remove flywheel on 62 Evinrude 40hp.

The impact gun will do the job as I suggested. Any levering or hammering under the flywheel can result in needing a replacement flywheel and/or new stator.
Sometimes loading the puller up and leaving the motor over night in a warm room results in the flywheel popping off during the night. Perseverance pays.

 

[HighTrim]

Re: Can not remove flywheel on 62 Evinrude 40hp.

Phooey. It's cold up there in Maryland. You need a vacation in Florida. Bring that motor along with you and I'll get that flywheel off. Well, maybe not if it is Locktited.

Im coming to Florida this Saturday! Downside is we are bringing the kiddies to Disneyland, at least my wife picked a resort that rents pontoon boats so I can do some fishing.

I would personally never use an impact gun on the puller bolt.

 

[1946Zephyr]

Re: Can not remove flywheel on 62 Evinrude 40hp.

That darned thing hasn't come loose yet??

It must be locktited on there.

 

[nwcove]

Re: Can not remove flywheel on 62 Evinrude 40hp.

Im coming to Florida this Saturday! Downside is we are bringing the kiddies to Disneyland, at least my wife picked a resort that rents pontoon boats so I can do some fishing.

I would personally never use an impact gun on the puller bolt.

jmo....but an impact gun does wonders if used right......and its a much better tool than the saws-all the op is getting ready to use! lol