someone PLEASE help me! cant get this flywheel off!

[gonefishin485]

someone please help me, i have a 1967 chrysler 105 outboard, and i CAN NOT get this flywheel off, to change the timing belt, to save my life! the center nut came off after a little persuasion for a 24 inch breaker bar, but this flywheel has given me hell for the past 4 days!

so far ive snapped two harmonic balancer pullers in half, bent 2 grade 8 bolts, and snapped a 3rd grade 8 bolt! and it still wont come off!

currently it is hanging by the flywheel, from two lifting straps, hooked to a motor hoist, and the entire back of the boat is 2 inches off the trailer AND STILL NOTHING!

is there something im missing? ive tried EVERYTHING to get it off and nothing has worked, you name it, ive tried it, heating, cooling, pushing, pulling, prying, cussing, fussing, i even tried to reason with it, but this thing is stubborn!

SOMEONE, PLEASE HELP ME, IM STARTING TO LOOSE MY FAITH AND MY MIND!!!!

 

[Frank Acampora]

Re: someone PLEASE help me! cant get this flywheel off!

Frustrating, isn't it?

Over the course of years, a bit of water or condensation has gotten under the nut and rusted the key and the flywheel hub. It has effectively damn near welded them together. So for a couple of days, soak it with PB Blaster or similar.

Harmonic balancers are adequate for normal flywheels but they are cast and just don't have the strength of rolled steel plate for a really stubborn flywheel.

Get a nice piece of 3/8 thick or better steel plate --about 4 inches square is adequate. Drill three holes for the Flywheel holes and use three grade 8 bolts in them--1/4-20 X 3 1/2 or longer, unless you have stripped the flywheel holes. In that case, just re-tap them to 5/16-18. Drill the center for a FINE thread bolt at least 1/2 diameter. Now, bolt the puller to the flywheel being sure to screw the three bolts all the way in (nearly 3/4 inch). Then, using a thick aluminum or brass block between the crankshaft nose and the puller center screw, tighten it down hard.--really Grunt on it. Now whack the center bolt a really good shot with a 3 pound fine adjusting tool. --16 or 22 ounce just ain't gunna do it. It may take a couple of shots and you may start bending the center bolt. If it doesn't pop, then try tightening the center bolt a bit more. Also try heating the center of the flywheel again.

It may fight you all the way and you will need to beat every 1/32 of an inch progress out of it. If the crank nose is rusted, you must lap the flywheel hub to it before re-installing the flywheel. Center nut is tightened to 95 Foot Pounds.

Don't give up! It may fight you but it doesn't know just how persistent you can be. Eventually it will give-up and come off.

 

[gonefishin485]

Re: someone PLEASE help me! cant get this flywheel off!

thanks Frank, i appreciate the insight and the encouragement, im going to cover it in PB blaster and walk away from it for a couple days, i had already soaked it for days in this stuff called "knock-er-loose" with freeze shock action, the guy at the harware store said thats the best stuff they had, and if that didnt get it loose that nothing would.

me and my next door neighbor already made a puller like your talkin about of some thick plate steel, thats how i snapped a grade 8 bolt!

so i reckon tomorrow i need to go to home depot, get me three more bolts, a drill bit, and a screw extractor, and try it again.

would you advise leaving the tension on it while its soaking in penetrating oil?

 

[gonefishin485]

Re: someone PLEASE help me! cant get this flywheel off!

also is there anyway i can get around pulling this flywheel?

like putting a control box and some coil packs?

im desperate at this point!!!

 

[199675hpforce]

Re: someone PLEASE help me! cant get this flywheel off!

If it is rusted pb will do the job smelly job. Never seen a rusted bolt that didnt loose the fight. Are you so sure its rusted? Pics man pics

 

[gonefishin485]

Re: someone PLEASE help me! cant get this flywheel off!

ohh yeah its rusted, on a 1967 chrysler, would you not expect it to be rusted, so i dont have a camera so no such luch on pictures, ive got the flywheel, motor, and aft of the boat hanging from a motor hoist right now, tomorrow ill coat it in PB blaster and go from there

 

[jerryjerry05]

Re: someone PLEASE help me! cant get this flywheel off!

Get a BIG three jaw puller. Loosen the nut but don't remove.Install the puller and tighten till you think it won't tighten anymore and tighten somemore.
Then take a 3-5# sledge and hit the bolt on the puller. DO NOT HOLD ON TO ANYTHING when using hammer as this can break fingers and cause blood loss.This should do it.Jerry

 

[gonefishin485]

Re: someone PLEASE help me! cant get this flywheel off!

i tried that with a BIG 2 jaw puller, hit it with a ball peen hammer, still nothing

currently its hanging by the flywheel from a motor hoist with a 3 bolt puller on it and soaking in pb blaster.

i hope this thing comes aloose, im getting frustrated now

 

[Frank Acampora]

Re: someone PLEASE help me! cant get this flywheel off!

Don't tighten the center bolt first and then try to tighten the three bolts. This will always snap them or strip the threads. Screw the three bolts all the way in first, then tighten the center bolt. Then whack the p i double s out of it.

If you have access to a ball joint pickle-fork tool, try driving it under one side of the flywheel at the back of the block while you are beating on the center bolt. Only trouble, you may bend the flywheel this way and it is also possible to damage the block

And no, there is no way to get around removing the flywheel. Even to convert ignitions, you need to remove it. You must even remove it to dis assemble the engine.

Too bad you are not local--I would come over there and get it off. There hasn't been one to beat me yet.

 

[gonefishin485]

Re: someone PLEASE help me! cant get this flywheel off!

i wish you were local too frank, ive done everything everybody suggested before i posted asking for help, i made sure to bottom out the three puller bolts, tightend the dog feces out of it, smacked the crap out of it about a 1000 times with my 3 pound persuader, tried my impact gun, put my 24 inch breaker bar on it, and nothing.

im about ready to break it or cut it off and buy a new flywheel off of ebay. but this female dog has aggrevated me to no end, id like to get it off just to teach it a lesson!

 

[tjello327]

Re: someone PLEASE help me! cant get this flywheel off!

I have read all the things you have tried and would go back to one idea, but change it a little. I would make a new puller out of 3/4" to
1" thick plate with a drilled and tapped hole in the center at least the same size of you crank threads and turn a 60 degree male center on the end of the puller screw so it will stay centered on the crank (your crank should have a female center drilled hole in it.) I would oversize your original holes in your flywheel to at least 3/8"-16. Keep your puller center screw as short as possible. This will keep more of the pulling force at the flywheel where it is needed. I would use a good quality 1/2" impact or possibly a 3/4" impact.
A taper at the diameter of yours and with rust on it will require about 6 to 10 tons of pulling force to release it. The only way to generate this much force is a heavy duty puller or rigged up on a vertical press (very difficult but not impossible.)
Good luck!

 

[chitownborn]

Re: someone PLEASE help me! cant get this flywheel off!

i had the same problem with my 1987, 85hp force i like yourself went thru two pullers, a few stripped out bolts in the fly wheel. Like jerry said get the big three jaw puller and do as he said it worked good for me, just put the jaws under the fly wheel teeth because the upper lip is not strong enough and will break chunks out of the fly wheel. Tighten and tighten some more and give it shot with a good size hammer and it will pop off. aggrivating aint it, good luck

 

[gonefishin485]

Re: someone PLEASE help me! cant get this flywheel off!

I GOT IT!!!!!

it faught me every step of the way, but i got that sun of a beeotch, it took wedging a thick chisel under the rear, a pry bar in the front, a propane torch to get it red hot, put a ball peen hammer on crank shaft, and slammed it with a 3 pound mall, bout 10 solid hit, and it popped!

when it cooled, i sanded the rust off with some emery cloth, and coated it in never seize! now i just gotta find a nut to put back on it, and then i can see if itll run!

 

[eurolarva]

Re: someone PLEASE help me! cant get this flywheel off!

Congrats on beating the beast. When you put it back on you must get the torque on that nut right or you will shear flywheel keys. I dont know force so I cant tell what that is but it is somewhere around 80 to 90 foot pounds. If you know someone who is a mechanic you might want to toss him 20 bucks and see if he will use his impact wrench to do this for you.

 

[Frank Acampora]

Re: someone PLEASE help me! cant get this flywheel off!

Now that you have it off, (told ya you were going to beat it eventually) IMPORTANT: Because you had heavy rust:

Before you put it back on, coat the crank nose and the hub with lapping compound and without the key in place, rock the flywheel back and forth to mate it to the crank. If you don't have or can't get lapping compound, make a paste of Ajax sink cleaner and oil.

After you lap them together, remove the flywheel and clean both the shaft and hub. Then with a soft pencil draw numerous vertical lines on the shaft.

Put the flywheel back on and spin it a few times. As a guesstimate, at least 85% of the lines should have rubbed off, indicating good mating of the wheel and hub. If not, lap it again.

Double check clearance on the distributor belt. With so much rust removed, The flywheel may either sit too low causing the center hub to contact the land on the crank nose, or the belt may rub. Either condition calls for replacement of the flywheel.

Finally, when you reinstall the flywheel with the key, torque to 95 foot pounds.

Oh, Yeah! Since you put so much heat on the wheel and since it is aluminum which transmit heat excellently, double check the windings on the alternator stator to be sure you have not melted the insulation. Also, check the rim magnets to be sure they are still strong.

Also heating to red hot does not increase my trust of the flywheel. This is a part that is spinning at 5500 rpm and builds up tremendous energy. If it were to destruct, it could very easily scatter shrapnel through the plastic hood. If I were you, even if it works, I would start looking for a good used one--either on ebay or over at The Chrysler Crew. But that's just my advice--take it for what you think it's worth.