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Flywheel removal problem
- jwonder
- Posts: 784
- Joined: Wed Nov 23, 2016 7:50 pm
- Location: Long Island, New York
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Flywheel removal problem
Started to remove the flywheel in my R69s, got the all-in-one tool up there and I promptly stripped the holes in the flywheel. I didn't even put much pressure on them. I was just about to do the heat and "wack it with a hammer" routine but wanted to get some tension on it before I did that.
Also, I ran a tap back through it and I was surprised at how easy the tap cut the metal. Its not very hardened steel as far as I am concerned.
So, what do you all think I should be doing at this point? One idea was to weld in bolts and use them to pull with. Or another idea I had was to weld on nuts and use those to pull with. Once I have the flywheel off I can grind the bolts or nuts off and clean the surface up properly for re-use. A friend is a professional welder and is fabulous with these things.
I am not sure if this would warp the flywheel though.
BY THE WAY, everything on this motorcycle is hard to get off. Its not been touched for 50 years.
Thoughts?
Thanks!!!
James
Vice President, Vintage BMW Motorcycle Owners
2022 BMW Friend Of the Marque
Long Island, New York
I Found
Dave
- jwonder
- Posts: 784
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Re-tap
Vice President, Vintage BMW Motorcycle Owners
2022 BMW Friend Of the Marque
Long Island, New York
Flywheel
- oldtimers.si
- Posts: 133
- Joined: Mon Aug 18, 2014 11:00 am
BMW R60 clutch and flywheel removal
you must heating with hot fen and spread with Rorsch Magic sprey
then go easy
then put new seal
here is tool
remove flywheel
regards,Mec
- malmac
- Posts: 796
- Joined: Sun Jun 29, 2014 2:10 am
- Location: Toowoomba, Australia.
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Elegant work by Jan
But that is not an engine that hasnt been touched for 50 years - so in some ways it could be misleading.
Its not even the original clutch or flywheel.......
I had a flywheel puller at some stage in the past which bolted onto the flywheel using all the 8mm bolts - it was a large plate the size of the flywheel and about 8mm thick.
Handy for pulling really stubborn flywheels - however it did restrict access to the centre of the flywheel if heat was needed.
Mal
Toowoomba- Australia
- jwonder
- Posts: 784
- Joined: Wed Nov 23, 2016 7:50 pm
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Removed!!!
I wanted to update you all on the flywheel removal. The flywheel is off and it looks beautiful! It did not spin on the crank and it was just tight from age.
The way I got it off is as follows.
I tapped the two holes with a 10mm x 1.5 tap. Even though the threads stripped on the 10mm x 1.00 the new threads are good. I put the crank puller on with the new bolts and NOTHING!! It would not budge. It was super tight, so tight that when I hit the center bolt the whole puller and flywheel rang like a bell. Loud.
Heat and tapping the puller did nothing. I did heat, soak with PB blaster, hit with hammer and repeat for 3 days!! Nothing! No movement. The puller was so tight I had breaker bars to tighten it. Nothing as I did not want to make it any tighter.
After 3 days I got thick angle iron and cut 3 x 9” pieces. I drilled holes and bolted to the 6 outside clutch bolt holes. The threads are 8mm x 1.0 and i didn’t even need to tighten them much, about a full turn each past finger tight and the flywheel popped right off.
The flywheel taper and crank taper is beautiful. The seal seat is wonderful and it’s great I saved the original R69S flywheel.
Just wanted to let you all know what I did to get it off. Thanks for all the help!!!
Vice President, Vintage BMW Motorcycle Owners
2022 BMW Friend Of the Marque
Long Island, New York