automatic primary chain tensioner Harley Twin Cam Discuss automatic primary chain tensioner in the Motorcycles forums; after three service attempts the harley automatic primary chain tensioner had to be removed from my flstc as it was constantly over tensioning the chain causing vibrations and noises. a ...

[shakey]

after three service attempts the harley automatic primary chain tensioner had to be removed from my flstc as it was constantly over tensioning the chain causing vibrations and noises. a haden unit was installed and it now shakes and vibrates like it was ment to. is this common?

[old no. seven]

What year bike? I've got the Hayden M6 tensioner on both of my Dynas, an 02 and 05. I installed and took the measurements as recommended by Hayden. All I heard was some whirring noises till everything settled in. The beauty of the M6 is the chain is under a "floating tension" being maintained by th springs loading and unloading. IMHO the HD auto tensioner only tightens and tightens and, it just seems to me, this tightening isn't that good on the Inner Primary Bearing. The 02's was installed 20k miles ago and I have never looked back on the decision to install it.

[aceharleywrench]

I would go with the Hayden unit,the H-D one hasn't impressed me at all.

[hardtimeharley]

I have over 40K miles on my Hayden M6 tensioner in my Dyna, with no problems. Quiet and smooth, minor wear on nylon (?) block.

[shakey]

I am very pleased with the way the Hayden unit performes, smooth running and shifts and I can find neutral much easier. I guess I was suckered in by the impressive, complicated looks of the Harley adjuster. Must I learn everything the hard way??