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mainshaft locknut

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Posts: 139
Joined: Sat Oct 10, 2009 2:29 pm
Bikes: 65 fl
2000 ultra
98 sporty
98 heritage classic
Location: mass

mainshaft locknut


Post by 65eglide » Fri May 03, 2013 1:37 pm

Noticed that one side of this nut has a raised area, was wondering which side faces the sprocket , flat side or raised area

Posts: 3338
Joined: Sat Jun 26, 2010 1:54 pm
Bikes: 1958flh 1969sporty,had a knuckle but sold back to original owner
Location: NEW JERSEY

Re: mainshaft locknut


Post by 58flh » Fri May 03, 2013 2:41 pm

E-Glide!---I looked thru both my manuals & According to what I have read & looked at , it should go on as follows.-----Gear on up as far as you can get it on the splines--on 65 you have to have proper spacer installed!--(your obviously past this point)---After gear put flat washer with tabs on--Then the nut goes on with the flatside against it!.---Tourque to 70lbs.& lock tab.----I hope this helps ,--you probably have the same order in your manuals.--DBL.-check in the K-BASE!--to be sure!---STAY-SAFE----RICHIE/-Hopefully somebody else will chime in also!---- :!:

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Location: Central Illinois

Re: mainshaft locknut


Post by Cotten » Sun May 05, 2013 6:06 pm


The raised flat on the bottom of machine nuts is called the "washing surface", and is intended to bear the load of the fastener.

I don't know why it is named that, nor why a washer is a "washer".


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