Pulling flywheel

[crosbyman]

you would be surprise how  snownblower  Dupont silicone spray  loosen things up

 

the stuff creeps deep in joints and slides …. it is also good to  keep ice of the  snowblower auger  and chute

if you have a snowblower  🙂

DuPont Teflon Snow and Ice Repellant, 10-Ounce : Amazon.ca: Tools & Home Improvement

Joining AOMCI has priviledges 🙂

[frankr]

Wow, never thought of the air chisel method.  Maybe that will revolutionize the industry.

[billw]

The guy seems very believable. The fact that he thought to put a nut back on it, shows that he has a conscience. I just bought a new air hammer, too. I don’t have that specific tool for it yet; but I will get it on Wednesday when the tool truck comes. I have a couple of Merc 100 automatic power heads kicking around, with known-tight flywheels on them. I am definitely going to experiment! My only question is whether the rapid blows of the air hammer would degrade the magnets any?

Long live American manufacturing!

[Buccaneer]

Report back how it works on your outboards before I try it on mine!
I’d feel better if I had three hands (and arms) and could lift the
motor by the flywheel before hitting it with the air hammer.
Will have to see if I have a pointy tool for mine.

Prepare to be boarded!

[Monte NZ]

That was a very interesting demonstration, but as Buc mentioned, it would be very important

to be lifting the flywheel to avoid hammering the bearings.

[crosbyman]

seems a good method but using the pointed chisel attachement …even if it work  scares me I would uset the other  attachement.. the one   shaped lie a  automotove  valve.

 

it has about 1 inch  plat surface  and would concentrate the impacts  over the entire bolt face  instead of being centered by a pointy  attachement

Joining AOMCI has priviledges 🙂

[Tubs]

Having had a couple air hammers for 50+ years, including
the pointed chisel used in the video, my experience doesn’t leave me with any
concern of damaging the crankshaft or bearings. However lifting the flywheel is
standard procedure with any method other that using a puller. I suspect what is
really separating the crankshaft from the flywheel is the harmonics that are
being created. Much the same as an extremely loud note, at the right resonant
frequency, that can make a glass vibrate, to the point it breaks.
Tubs.

A "Boathouse Repair" is one that done without having tools or the skills to do it properly.

[Buccaneer]

Yesterday I tried the air hammer method to remove a flywheel,
as I had the perfect motor to try it out on. An air-cooled Clinton
outboard of no great monetary or sentimental value!

Note that the flywheel nut wasn’t super tight, but the flywheel
was not loose on the crankshaft taper. I never even had the
cowling off this motor since I owned it the last 8 years perhaps.

I pried on one side of the flywheel with a big screw driver.
Had I had three hands, I would have used two screw drivers.
Long story short, when I pulled the air hammer trigger, the
flywheel popped loose in a millisecond!

Try this method at your own risk…… I’ll keep using my OMC
puller on anything I cherish!

Prepare to be boarded!

[Bob Wight]

So if you had a flywheel that was stuck super-tight and it still wouldn’t break loose with a puller on it screwed down tight, I bet it would break loose real quick if you hit the center bolt on the puller with a hammer head attachment on the air chisel?

Bob

1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1955 Johnson QD-16
1957 Evinrude Fastwin 18
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20

“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."

[billw]

Bob Wight wrote:

So if you had a flywheel that was stuck super-tight and it still wouldn’t break loose with a puller on it screwed down tight, I bet it would break loose real quick if you hit the center bolt on the puller with a hammer head attachment on the air chisel?

That’s what I am thinking, too.

I tried the method, WITHOUT a puller, on a Merc 100 automatic yesterday. I seem to recall the torque on them is supposed to be 65 foot pounds; so I was expecting a miracle. I am sure this flywheel has been on for many years. I backed the nut up to the top of the thread. I used a hammer-type attachment, rather than the point. I lifted up on the the flywheel, pulled the trigger on my brand new, MAC air hammer and……..NOTHING.I tried a few times and gave up. Granted, I didn’t use the point, because I didn’t have one. But I doubt that would make much difference. Maybe I will buy a point and try it again, if others continue to have good luck; but I am thinking this puller-less method is more for smaller engines…

Long live American manufacturing!

• This reply was modified 2 years, 7 months ago by billw.

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