[franz]

there are flats, some are 18mm, some another size. It requires a very thin wrench to go back there and hold it, like a bicycle hub cone wrench. Alternatively you can use an impact wrench and it will tighten usually.

 

[franz]

Thanks but the tool is not the issue. I personally used a ratchet with the proper 17mm head. As I said though, towards the end of the bolt when it's just about to get tight the nut keeps spinning although a wise grip was holding the whole thing pretty tight... or so it seemed.



17mm is right but I've never found any place to hold it tight and that is why I tried using a wise grip which I believe did hold the thing tight but nut kept spinning regardless... No place for any Allen key that's for sure. I triple checked and didn't find anything. However now that you mentioned open end wrench I believe at the end of the link bold was a little flat I guess corner that maybe would allow a wrench to hold it. I'll give that a try.

I'm still curious though... Why was one side spinning but not the other? Pretty confusing....

No not the nut, the back side (on mine) has very thin flats on it. Push back the rubber and look very closely.

 

[franz]

You can drive without one of the links if you really need to...it's not a critical item. I mean don't drive it like you stole it but a couple miles is no big deal. Take the other end off and you are good.