That pain in the arse flywheel thrust washer

[POCO LOCO]

Is there a way to hold the flywheel thrust washer from slipping out of alignment upon reassembly? Had put in a lightened flywheel on my 620 monster. upon start up noticed a noise coming from this area I had just worked on . Upon disassembly  discovered the mangled washer. I was thinking about laying down a layer of grease then laying washer on top. Any suggestions?

[koko64]

That's what I do.

[Speeddog]

+1, grease on the flywheel side.

[greenmonster]

+2, grease inner side.
I also measure when correct assembled top crank-nut,
then l KNOW if washer is good or not.
Alt cover bearing failure is a heartstopping noise...

[POCO LOCO]

+2, grease inner side.
I also measure when correct assembled top crank-nut,
then l KNOW if washer is good or not.
Alt cover bearing failure is a heartstopping noise...

Please explain what you mean by measuring assembled top crank nut ?

[Speeddog]

I think he meant measuring from the end of the crank snout to the outer face of the nut.

[greenmonster]

"I think he meant measuring from the end of the crank snout to the outer face of the nut."

Yup, w digital meter.

[silas]

I made this same mistake when attempting to install my Yoyodyne light flywheel. And I used high temp grease under the thin washer. Problem is, the new aluminum flywheels' splines were a tight fit over the crank and required me to hold a 2x4 over the new flywheel and whack it to get flywheel to go onto the crank. This process dislodged the thrust washer...and required it to be reopened and redone. ( I farmed it out after messing it up- only 2nd time I've trailered my bike, upon a mess up)       My (super experienced) Ducati mechanic told me he made the same mistake decades ago on his 1st LW flywheel install, so I felt better .  Great idea w/ the measuring- I couldn't tell it was off by looking, prior to reinstall of the alt cover.