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02 raptor 686 k&n lexx exhaust
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Discussion Starter · #1 ·
So took engine out again as was having trouble accessing some bolts as I have the following to change.
l&a w/ 52t gear
Clutch
Stator
Found this when I took the flywheel off. And I also can’t get the flywheel off the old gear. When I went to take the flywheel nut it was easily taken off even after I torqued it. Any help?
 

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So took engine out again as was having trouble accessing some bolts as I have the following to change.
l&a w/ 52t gear
Clutch
Stator
Found this when I took the flywheel off. And I also can’t get the flywheel off the old gear. When I went to take the flywheel nut it was easily taken off even after I torqued it. Any help?
Need to make sure crank snout and flywheel are super clean before installing and use an impact of some sort when installing. Bolt torque alone does not properly seat tapered surfaces. Also use red loctite on the threads.
I would not re-use that flywheel, it is too damaged.
 

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02 raptor 686 k&n lexx exhaust
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Discussion Starter · #3 ·
Need to make sure crank snout and flywheel are super clean before installing and use an impact of some sort when installing. Bolt torque alone does not properly seat tapered surfaces. Also use red loctite on the threads.
I would not re-use that flywheel, it is too damaged.
Thought impacts were a no no??
 

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I only use impacts for loosening stubborn fasteners, never to install.
Proper torque will seat a taper lock.
Use loc-tite.
Flywheel does look like it's had it.
 

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02 raptor 686 k&n lexx exhaust
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Discussion Starter · #5 · (Edited)
I only use impacts for loosening stubborn fasteners, never to install.
Proper torque will seat a taper lock.
Use loc-tite.
Flywheel does look like it's had it.
Found one locally at a used parts store miraculously, so brake cleaner everything. And loctite threads.
 

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02 raptor 686 k&n lexx exhaust
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Discussion Starter · #6 ·
I only use impacts for loosening stubborn fasteners, never to install.
Proper torque will seat a taper lock.
Use loc-tite.
Flywheel does look like it's had it.
Back of this flywheel looks different, I take it I got an 04-05 model?
 

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Thought impacts were a no no??
Eh, yes and no.
I’ve seen several instances of loose flywheels that were “torqued to spec”. I always use my 1/4” hex drive 18v fuel impact. Never had one come loose, never damaged one either.
Theoretically tight is tight and you shouldn’t have a problem if properly torqued. Just make sure the surfaces are 100% clean and dry.
 

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02 raptor 686 k&n lexx exhaust
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Discussion Starter · #9 ·
I just ordered the 04-05 l&a, I’ll send back the 01 tomorrow. Appreciate the help guys.
 

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Should I use lapping compound on the newer flywheel?? Or just loctite key and threads?
No lapping compound, as it is abrasive.
Nothing abrasive on taper-lock surfaces.
As long as there are no burrs, if so, use a file.
Make sure the surfaces are clean, torque and loc-tite the flywheel nut.
 

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Discussion Starter · #12 ·
No lapping compound, as it is abrasive.
Nothing abrasive on taper-lock surfaces.
As long as there are no burrs, if so, use a file.
Make sure the surfaces are clean, torque and loc-tite the flywheel nut.
Woodruff scraped the top wall a bit where the key goes that’s about it.

should I tap the flywheel with 2x4 and mallet make sure it sat?
 
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