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General Category >> Rubber Side Down! >> Over torqued rear axle
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Message started by Redryder652 on 05/23/16 at 17:39:52

Title: Over torqued rear axle
Post by Redryder652 on 05/23/16 at 17:39:52

So I was doing some maintenance on the s40 the other day and I may have over torqued the rear axle by about 15 foot pounds extra. I set my torque wrench at 65 foot pounds and there was something wrong with it because it did not click so I kept on going until I realised wow, that's quite a bit of force.
Can over torquing by this much damage the rear hub assembly?

Title: Re: Over torqued rear axle
Post by Dave on 05/23/16 at 17:43:26

No, it is a pretty beefy bolt with fine threads.

Back it back down to what it should be, and don't worry about it.

Title: Re: Over torqued rear axle
Post by Redryder652 on 05/23/16 at 18:02:15

I'm not worried about the bolt, I'm more worried about clamping down too hard on the rear wheel/pulley/brake and screwing the aluminum.

Title: Re: Over torqued rear axle
Post by Kris01 on 05/23/16 at 18:14:37

I lifted the back of my bike into the air with a breaker bar trying to loosen the factory torqued rear axle nut. ;)

Title: Re: Over torqued rear axle
Post by norm92de on 05/23/16 at 18:28:37

Kris,
That is about what I have found with Zukis factory settings. They seem to be very enthusiastic about tightening stuff. :)

Title: Re: Over torqued rear axle
Post by Redryder652 on 05/23/16 at 18:40:06

So I should be good, is what you guys are saying.

Title: Re: Over torqued rear axle
Post by Kris01 on 05/23/16 at 18:44:47

Yep.

I even tried an impact wrench and it wouldn't touch it! It took lots of patience and strength in the end!

Title: Re: Over torqued rear axle
Post by Redryder652 on 05/23/16 at 19:02:44

So how did you loosen it? Heat?

Title: Re: Over torqued rear axle
Post by Kris01 on 05/23/16 at 19:14:27

Simple perseverance! The breaker finally did it.

Title: Re: Over torqued rear axle
Post by Redryder652 on 05/23/16 at 19:20:58

So I'm guessing these things are super tough.

Well, I'm sold, I didn't break it.

Title: Re: Over torqued rear axle
Post by Kris01 on 05/23/16 at 19:26:48

Yeah, it's pretty durable. The axle takes a beating.

Title: Re: Over torqued rear axle
Post by Redryder652 on 05/23/16 at 19:36:55

In theory what would you booger up first, the axle or the the wheel?

Title: Re: Over torqued rear axle
Post by Kris01 on 05/23/16 at 19:40:57

I would guess the threads on the axle then maybe the wheel bearings might complain a few miles down the road. This is only a guess though.

Title: Re: Over torqued rear axle
Post by Redryder652 on 05/23/16 at 19:59:57

Thanks for the reassurance, I thought i could have seriously messed up something.

Title: Re: Over torqued rear axle
Post by Kris01 on 05/23/16 at 20:08:22

As long as you loosened it back down to factory specs, you should be ok. I don't think just over torquing it would hurt anything if the threads are still good.

Title: Re: Over torqued rear axle
Post by Redryder652 on 05/23/16 at 20:15:41

That's what I did, I loosened it back down imediately after.

Title: Re: Over torqued rear axle
Post by Dave on 05/24/16 at 02:45:40

2B1209135051600 wrote:

I would guess the threads on the axle then maybe the wheel bearings might complain a few miles down the road. This is only a guess though.

If you follow the load path....the only load the bearing sees is on the inner bearing races, the tightening just clamps them together tighter. You will never be able to tighten the axle enough to squeeze the bearing races into submission.

There have bee a few fellows who left out the spacer in the pulley hub when they put their bike back together (the spacer easily falls out when you set the pulley down on the floor), and when they tightened their axle the clamping force now goes through the bearings.....and bearing failure does happen relatively quickly.

Seriously....you didn't hurt anything - don't worry about it and just enjoy your ride! :)

Title: Re: Over torqued rear axle
Post by Kris01 on 05/24/16 at 18:08:51

665D5047565A41475C545946350 wrote:

don't worry about it and just enjoy your ride! :)

That's the reason WHY I ride! ;D It clears away all the worries!

Title: Re: Over torqued rear axle
Post by Redryder652 on 05/24/16 at 18:23:47

I'm might have to do that. A nice long thumpin ride.