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Re: How to remove flywheel - 1990 350 F2 2UA

Posted: Thu Jan 18, 2018 3:46 pm
by MK
No.
Usually the outer right bearing, then the outer left.
Or it is obvious like a torn rod or a blue and sloppy big end bearing.

Re: How to remove flywheel - 1990 350 F2 2UA

Posted: Thu Jan 18, 2018 5:50 pm
by kjellz
And the centre webs, are they splined where they are pressed together? Never seen any pics of these parts..

Re: How to remove flywheel - 1990 350 F2 2UA

Posted: Thu Jan 18, 2018 6:02 pm
by MK
Oh c'mon ... are you really that lazy?
Google rd350 crank web and you get stuff like this:
https://yambits.co.uk/rd350-ypvs-crank- ... pqck2nop12" onclick="window.open(this.href);return false;

The center section is difficult to press as it's not keyed or splined but the 180 deg offset will be crucial for later trueing.

Re: How to remove flywheel - 1990 350 F2 2UA

Posted: Thu Jan 18, 2018 7:42 pm
by hondaror
I'm doing my motorcycle mechanics school currently.
Regarding your flywheel...use contact cleaner or brakekleen on the tapers, internal and external, and then mount them up clean. Do not touch the clean surfaces, as the oils in your hand will cause problems.
For your cases, a leak down is required and afterwards a vacuum test at 6" of mercury for 6 minutes will tell you if your main seals are toasted.

Re: How to remove flywheel - 1990 350 F2 2UA

Posted: Wed Jun 19, 2019 4:57 am
by kjellz
This season I started by removing my flywheel for a stator inspection (after a rewind last year). I used an electric wrench to shock the puller bolt and it popped loose instantly. It does however seem to take some considerable force to loosen these even at ideal conditions. Note, I did not apply anything to the conical surfaces when installing last time.

Re: How to remove flywheel - 1990 350 F2 2UA

Posted: Fri Sep 20, 2019 11:36 am
by mixalive
I had issues pulling mine off as well. My Chinese puller pulled the threads the first time. On the second try after grinding down the puller threads, I applied heat to the flywheel while the puller was at full tension and rapped it on the flywheel a couple of times with a rubber mallet and it popped off. It did mushroom the end of the crank slightly.