RD400 Rear Axle Nut

[forexer]

I removed the rear wheel last week to clean it up and after re-assembly I cannot torque it to the required spec because if I do it will not rotate. Everything moves freely and normal when loose however as soon as I go past snug the wheel starts to have resistance the more I tighten the worse it gets. I figured snug is fine as the wheel is double nutted and cotter keyed. However I thought I'd ask the group if anyone else has experienced this same thing and if so what was the fix?

One more thing that maybe the culprit , not sure - does it matter which chain tensioner goes on what side left or right because I cleaned them both up and now I don't know which one goes where. I looked at them both in detail and they look exactly the same just mirror opposites I couldn't see any difference between them 

[Jspooner]

Did you have the bearings out? If you did and did not reinstall them properly they will bind when you tighten the axle. They need to be seated all the way. IF both chain adjusters are the same (I thought they were different) it shouldn't make any difference with the problem you are having.

[forexer]

Bearings were never removed just the end caps - The Yamaha parts diagram calls out 2 different parts numbers one for the left and one for the right drive chain adjuster puller however on eBay and other sources online sell them individually without specifying left or right so I'm assuming there interchangeable they sure look they are.....

[RDFL]

The larger hole one goes on brake side, larger for the caliper bracket. The binding might be the dust seals.

[rodneya]

Check if it is binding on the caliper when tightened

[forexer]

the hole sizes appear to be the same diameter on both adjusters. ( Going off memory here )  I believe the stock OEM adjusters have a notch on the top side of the adjusters to help determine the evenness on both sides when adjusting the chain. The goal is to match the notch on the adjuster with the marks on the swing arm making them even on both sides. Neither of my adjusters have the factory notch and I think that if the hole was too small the axle wouldn't of been able to slide all the way through as it would be bound up.

Do you think its fine leaving how it is (not torqued to spec ) -  the chain is just about even on both sides within .020 measured using calipers and the rear wheel is snug on the large nut and tight on the small nut and cotter keyed. I can't see it coming off I guess I need to ride it tomorrow and see how it handles - see if it wobbles or vibrates etc...etc.... I wish I could of remembered how tight that nut was coming off maybe that's how it was.

[RDFL]

If one hole is not bigger and only work on brake side, you either don't have 400 or don't have 400 rear end.

[forexer]

Maybe the ones I have are aftermarket and that's why the holes are the same size  I do know that the brake caliper bolt fits the hole and the bike is definitely a RD400

[forexer]

Also I took it out today for a ride no issues no concerns it handled perfectly fine

I'd rather have the wheel be able to rotate then to have it tight and dragging with resistance.

I just find it odd that I was  unable to torque it to spec

I was wondering if anyone else has ever experienced this issue

[RDFL]

Here is pic of 400 adjusters, maybe you have 2 brake sides? Would be slop on other side then. The 400 swingarm has larger slot on that side for the nut thing to fit thru to hold brake bracket. https://www.ebay.com/itm/163189210914

[RDFL]

Maybe the ones I have are aftermarket and that's why the holes are the same size  I do know that the brake caliper bolt fits the hole and the bike is definitely a RD400

It is for the sleeve nut (I think that is what you would call it) the axle goes thru.

[forexer]

After looking at the eBay link that you provided I can definitely see the difference in the hole diameters.
However both of mine appear to have the same size holes so I'm thinking I must have two big hole adjusters because you're saying the smaller diameter hole is too small for the sleeve nut ?

Is this correct will the adjuster with the smaller hole fit the sleeve nut or is the diameter to small?

[RDFL]

Will only work on brake side with the big one, number 20 needs the larger hole. Is why the swingarm slot is much larger on that side. Do spacers etc. look the same as diagram on your bike?  https://www.yamahapartsnation.com/oemparts/a/yam/500419cbf8700209bc7855b8/rear-wheel       

[forexer]

Yes my adjuster fits the number 20 part as shown in the diagram

I guess my question is will having two large hole adjusters instead of one small and one large cause a torque issue.

One has a large hole and the other has a small hole however do you know if the 2 adjusters are same thicknesses?

[RDFL]

I would doubt it but guess there is a chance if you have another large one (other side should be similar in diameter to axle) maybe when tightened axle gets crooked in the slop.