67 Evinrude 18hp flywheel stucK, 45 YEARS and never off

[oldguye]

Hi,

I am trying to remove the flywheel from my 67 Evinrude 18. This motor has almost no use and I don't think the flywheel has EVER been off the motor. It has no spark on one cylinder and I am trying to remove the flywheel to check points, condensers, coils.

I removed the recoil starter, removed the flywheel nut, and the dam* flywheel WILL NOT move. I used the harmonic balance puller (I've successfully removed a lot of flywheels with it) and bent (9) 1/4 x 20 bolts. I am going to try to buy the hardened kind with the built on washer and see if that will work - if it doesn't my last alternative is to heat the flywheel with a torch while holding a ice cube on the end of the crankshaft and see if that will break the seal.

Questions: Will the use of heat destroy or ruin anything?
Does anyone have any other suggestions (I've used wd-40 on the flywheel/crank area and no help)?

EDIT

Needless to say, I am at the end of my skill level and patience. The motor has absolutely no usage and probably doesn't have 20 total hours on it.

Thanks for all your help, I do appreciate it and you guys are about the last resort before I MELT THIS DARN THING.

 

[oldguye]

Re: 67 Evinrude 18hp flywheel stucK, 45 YEARS and never off

More information - I even used a Snap-On impact with 150lbs of air - all it did was wipe out the end of the harmonic balance puller (the pointed end). I read a thread where someone had the same problem and people said bash the end of the crank HARD (the top of the puller I guess) while tightening.

I am even going to try and hold it with the ring gear (probably wipe the ring gear out) while using the Snap-On breaker bar and a cheater pipe, if that doesn't work THE ACETYLENE TORCH WILL - BY GOD IT'S COMING OFF OR MELTING.

I'll try most anything now because if I can't get it off I WILL MELT THIS SOB AND PART OUT THE MOTOR. I'VE HAD IT.

 

[nwcove]

Re: 67 Evinrude 18hp flywheel stucK, 45 YEARS and never off

Patience is the key! Soak it with good quality penetrating fluid....not wd 40. Tighten down the puller evenly, lift up on the puller , and give it a good firm hit with a hammer. If no luck, let it set overnight, and try again. It will come off. Be careful with using heat, you can destroy the top seal in the motor.

 

[oldguye]

Re: 67 Evinrude 18hp flywheel stucK, 45 YEARS and never off

Hi nwcove,

Yeah, I don't want to do the heat thing. I'm pissed and frustrated but this is the cleanest outboard, other than new, I've ever seen so I guess I'll just use PB blaster and patience, then,

I'LL MELT THE SOB AND BEAT THE MOLECULES UNTIL THEY SQUEAK. LOL

Hey, in your heading pic, I see a 57?, I have two 57 18's and a 56 electric start 15, they come next (boy am I a glutton for punishment).

 

[AlTn]

Re: 67 Evinrude 18hp flywheel stucK, 45 YEARS and never off

from a factory manual for a '78 9.9-15 hp. "The flywheel may not "pop" from the crankshaft taper when tightening the puller bolt. To "pop" the flywheel, use a heavy plastic mallet and tap the top outside diameter of the flywheel or puller. Do not hit the center bolt to remove the flywheel."

I've used a piece of 2x4 on the top outside diameter and struck it with a 2 lb. ballpeen hammer. Rotate the flywheel cw a few inches and smack it again, etc. You may have to tighten the center bolt on the puller a few times and continue this procedure. Just a fwiw from my experience.

 

[HighTrim]

Re: 67 Evinrude 18hp flywheel stucK, 45 YEARS and never off

Hopefully some previous owner did not Loc Tite the thing down. Seen that, what a chore.

Make sure you are using the grade 8 bolts, else they will snap everytime.

I would never smack the flywheel on a magneto ignition, you will destroy the magnets. Pull UP on the flywheel, then rap the puller bolt. Notice I said rap, not wail on it with a sledge hammer, and ensure you are pulling UP on the flywhee when doing itl.

 

[AlTn]

Re: 67 Evinrude 18hp flywheel stucK, 45 YEARS and never off

the f/w of the '78 9.9/15 hp. has 2 magnets as well

 

[kbait]

Re: 67 Evinrude 18hp flywheel stucK, 45 YEARS and never off

2nd the grade 8 bolts/washers. Be sure they're screwed in deeply in the flywheel so you don't pull those threads loose..

I usually tighten the puller tight, lift up on flywheel by prying from the rear recoil mount (just lifting flywheel), and hammer w/medium force on the centerbolt of puller. Leave the flywheel nut on flush to the crank so you don't gum up those threads. It should pop. If not, tighten puller again, and try again. If no pop, spray a little pb blaster on and let sit overnight (tight) and repeat. It should pop off.

I'd be hesitant to use heat myself, as I'd rather destroy the flywheel than melt any crank seals. Had a 10hp that wouldn't budge and ended up ripping the flywheel aluminum. I used a cut off dremel to get cut off the flywheel and then replaced w/a used one from tim's outboard.. one of the salvage yards listed here: http://forums.iboats.com/showthread.php?t=438822

Good luck!

 

[nwcove]

Re: 67 Evinrude 18hp flywheel stucK, 45 YEARS and never off

Hi nwcove,

Yeah, I don't want to do the heat thing. I'm pissed and frustrated but this is the cleanest outboard, other than new, I've ever seen so I guess I'll just use PB blaster and patience, then,

I'LL MELT THE SOB AND BEAT THE MOLECULES UNTIL THEY SQUEAK. LOL

Hey, in your heading pic, I see a 57?, I have two 57 18's and a 56 electric start 15, they come next (boy am I a glutton for punishment).

my avitar is the cowl from a "basket case" 56 5.5. its really in bad shape.... but that motor will run again!!

 

[oldguye]

Re: 67 Evinrude 18hp flywheel stucK, 45 YEARS and never off

from a factory manual for a '78 9.9-15 hp. "The flywheel may not "pop" from the crankshaft taper when tightening the puller bolt. To "pop" the flywheel, use a heavy plastic mallet and tap the top outside diameter of the flywheel or puller. Do not hit the center bolt to remove the flywheel."

I've used a piece of 2x4 on the top outside diameter and struck it with a 2 lb. ballpeen hammer. Rotate the flywheel cw a few inches and smack it again, etc. You may have to tighten the center bolt on the puller a few times and continue this procedure. Just a fwiw from my experience.

Hi,

Thanks for the info. I had never intended to 'beat the 'h' out of the center'. After reading and taking a break (and going to work - just got home) I agree, good pressure on the three bolt puller with grade 8 & preformed washer(if I can find such an animal in 1/4 x 20), then lifting with wood on the outside - rotate a bit and do it again while increasing pressure on the puller shaft; a MEDIUM TO EASY hit with a plastic or brass mini sledge (3#) on the center of the puller and more lifting with wood - repeat until successful.

 

[oldguye]

Re: 67 Evinrude 18hp flywheel stucK, 45 YEARS and never off

my avitar is the cowl from a "basket case" 56 5.5. its really in bad shape.... but that motor will run again!!

I got a free Evinrude parts motor the other day (bought an Eska 9.5 and the guy threw this on in for zip, I sold the Eska for a small profit and have this motor) the model number is 15012. It's a 53/54 15hp. If you can use any of the parts, let me know.

 

[HighTrim]

Re: 67 Evinrude 18hp flywheel stucK, 45 YEARS and never off

Todays restore is a 15012 actually that I have on my stand. Had 3 of them so putting together 1 good runner.

 

[oldguye]

Re: 67 Evinrude 18hp flywheel stucK, 45 YEARS and never off

Todays restore is a 15012 actually that I have on my stand. Had 3 of them so putting together 1 good runner.

Hi HighTrim,

Wow, am I going to be bugging you for info and guidance and advice.

Seriously, I have never worked on the older motors (the oldest was a '64 Johnson 91/2) but I followed a thread on here a while back where a guy did a real nice rebuild on a Johnson '57 18hp including paint. It was such a nice job it inspired me to 'go for it' because I had an opportunity for the old motors effectively free.

Now I have (2) 15's ('53/54 & '56 electric) and (2) '57 18'S. The '57 Johnson 18 runs but needs carb work and has the pressure tank. All the others are unknown entities and the 53/54 is purely for parts.

Just following the threads on this forum has given me an amazing amount of help and all of you guys have my very sincere thanks. I will be posting pictures of the projects and following up with how I get this '67 18 f/w free,

Again thanks to all.

 

[HighTrim]

Re: 67 Evinrude 18hp flywheel stucK, 45 YEARS and never off

Sounds like you are going to have fun.

Be advised, restoring antique outboards is addictive, if your collection quickly grows into the hundreds seek medical attention immediately

 

[kfa4303]

Re: 67 Evinrude 18hp flywheel stucK, 45 YEARS and never off

You should be able to find (1/4" x 20 x 3") GRADE 8 bolts and washers at any Lowes/HD/Hardware store. This link and pics may help too.

http://www.duckworksmagazine.com/06/columns/max/index6.htm

 

[oldguye]

Re: 67 Evinrude 18hp flywheel stucK, 45 YEARS and never off

You should be able to find (1/4" x 20 x 3") GRADE 8 bolts and washers at any Lowes/HD/Hardware store. This link and pics may help too.

http://www.duckworksmagazine.com/06/columns/max/index6.htm

Hi Kfa,

Tried yesterday at (2)Lowe's and one Home Depot, no luck, no grad 8, 1/4x20 at all, only preformed (flange) bolts & washers ere standard grade. I bought 'em anyway. Now my problem is finding a steering wheel puller that will allow the bolts and puller to all be centered/vertical as I apply the pressure.

Hopefully I can find the correct puller at NAPA or Harbor Freight, then I'll try the standard lpreformed flange bolts and order the grade 8 flanged from a supply house.

Hey Hi Trim,

Too late, I've got the 'fix the old motor' bug. First, it's an interesting and relatively (very relative) cheap hobby. 2nd, in my personal opinion the old 2 strokes were some of the best made mechanical devices ever when one considers their longetivity and design parameters.

I mean they worked quite well and the fact that a 55 year old internal combustion engine is still performing quite well with relatively minor maintenance and upkeep is the 'proof of the pudding'.

Besides, taking an old motor that looks like horsepuckey and doesn't run and with a little work and relatively minor amounts of money (but a lot of time and the learning curve requiresa bunch of patience and humility - the outboard doesn't give a damn if I get mad or swear at it but, the satisfaction of seeing it work and look good is great.

Combine the redone outboard with a repainted old boat and trailer (along with doing the required maintenance to said boat/trailer) usually results in an easy sale. Then with the money and/or profit ONE CAN BUY MORE OLD OUTBOARDS/BOATS/TRAILERS .

ARRRGGHH, outboard wrenching addiction is firmly in place.

Faiar Winds.

 

[HighTrim]

Re: 67 Evinrude 18hp flywheel stucK, 45 YEARS and never off

I agree whole heartedly. Have fun, and keep us updated on how it goes.