Theorys

[bushman]

Just wondering if anyone outr there can tell me why the clutch hub nut keeps backing off the these dogs. Red loctite and 80 foot pounds torque. Seems with reversing threads it would never come loose. Could really tear some chit up inside.

 

[scubaman15]

Its ALL that POWER LOL but really the torque spec has changed its like 120Fp I've only had to redo mine once so far ? It is sorta strange that with reverse thread it even has a chance to get loose:loony::loony:

 

[bushman]

I thought I read i n the manual 80 ft/lbs. I Better go look again.

 

[scubaman15]

I thought I read i n the manual 80 ft/lbs. I Better go look again.

There are lots of posts on this do a search ..hears one I copied and pasted
do 135-140lbft dry to pull it all together, remove the nut and apply red loctite, and torque to 125lbft.
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narow's dad

"DEATH SMILES AT ALL OF US---ALL I CAN DO IS SMILE BACK" -- Al "Alicat" Sensoli RIP

 

[BigDogBro1]

unless BDM has just recently changed it again, the torque spec is 100 ft/lbs from 80.

 

[DRBarnhart]

Just wondering if anyone outr there can tell me why the clutch hub nut keeps backing off the these dogs.

I think it may be the lack of a compensating sprocket. Without it the transfer of power from the engine to the clutch/tranny isn't as smooth which may cause the nut (or nuts) to vibrate loose. But the biggest reason may be that the nut should be right hand threaded like the engine sprocket so the engine rotation tries to tighten the nut not loosen it...

But that's just my :zz2cents:...

Dennis

 

[hollywoodjohnny]

Just wondering if anyone outr there can tell me why the clutch hub nut keeps backing off the these dogs. Red loctite and 80 foot pounds torque. Seems with reversing threads it would never come loose. Could really tear some chit up inside.

I'm going through the same problem right now, mine backed out and took out my main shaft seal, I'm very lucky it didn't take out my main shaft, so red loctite and 100 ft lbs torque is the new spec ?

 

[Mickeetwo]

Mine came loose at 7500 miles. Have over 16000 now and no problems

 

[bushman]

:up:I would have to agree Dennis, but I lokked at my manual and it says 80 ft/lbs with red locktite. Guess I better go 100ft/lbs just to be safe. Thanks for all the input everyone.

 

[nine lives]

I agree with Dennis, lack of a compensating sprocket, doesn't have any "give" on decelerating or down shifts, Harley uses them for a reason. It's my understanding that BD is now using a compensating sprocket on there new models. I used my impact gun and red locktite, worked well. I'll see how well since I broke my clutch cable yesterday and had to down shift without a clutch.

 

[toodie]

I don't remember exactly but I think for mine there was a service bulletin to remove an oring somewhere in there (yes that is a technical term somewhere in there) Not sure if the same would apply to your year. I see if I can dig up the service bulletin.

 

[toodie]

I don't remember exactly but I think for mine there was a service bulletin to remove an oring somewhere in there (yes that is a technical term somewhere in there) Not sure if the same would apply to your year. I see if I can dig up the service bulletin.

Awe service bulletin was for 07-08

 

[BigDogBro1]

I feel that deceleration downshifting contributes to the loosening of the clutch nut.

 

[toodie]

That's why I always accelerate!

 

[Brew]

It happened to mine at 2000 miles and then again at 10,000. Hasn't happened again (fingers crossed)...

 

[V]

One thing to keep in mind when you re-install. Clean clean clean! Locktite won't stick to oil. When I did mine I pulled everything to make sure I could properly clean the shaft and get it dry before reisnstall of the hub nut. Been good since:2thumbs:

 

[Brew]

I think that's why no more problems here. V is right! Clean it, dry it good and let it set-up a bit before riding.

 

[bushman]

thanks for all the input. very good feedback as usual. This forum rocks!