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General Category => General Discussion => Topic started by: Toecutter on August 25, 2015, 01:24:01 PM

Title: Leaking rear hub. '14 V7 Special
Post by: Toecutter on August 25, 2015, 01:24:01 PM
So, dropped my bike off at the stealer (still under warranty, so I'll let them get greasy), but want to ask for some thoughts:

I've got a rear hub leak, intermittent. it's NOT diff. fluid, as I"m only 800 km from my fluid change and that stuff is dark... the leak I have is amber/golden.

No rhyme or reason to when it decides to drip, sometimes it simply makes the lower section of my hub a little oily, others, I'll come out to find it's puked on my rim and tire.

I'm thinking it's a seal around the shaft, but is the shaft in an oil bath? I thought it was dry. Plus, if it's a leak from the transmission... that's a long way to travel, to drip out the hub, no?
Title: Re: Leaking rear hub. '14 V7 Special
Post by: sib on August 25, 2015, 01:30:10 PM
....if it's a leak from the transmission... that's a long way to travel, to drip out the hub, no?
Not if there's no where else for it to go.  That's my guess.
Title: Re: Leaking rear hub. '14 V7 Special
Post by: Toecutter on August 25, 2015, 02:39:05 PM
Mine too.

Just seems like that would mean two failed seals... one at each end? Haven't got a diagram, and at this point, it's just a thought exercise... seeing as how it's in the shop already.

Seems early though... 2 months and only 6800 km.
Title: Re: Leaking rear hub. '14 V7 Special
Post by: Vasco DG on August 25, 2015, 04:56:56 PM
Try removing the breather and making sure it's working properly. Sounds like the bevelbox is pressurising and forcing oil past a seal. It won't be from the gearbox, the front of the bevelbox is sealed.

Title: Re: Leaking rear hub. '14 V7 Special
Post by: Cam3512 on August 25, 2015, 05:14:21 PM
There's no requirement to add moly to the rear,  so the oil wouldn't be that dark.
Title: Re: Leaking rear hub. '14 V7 Special
Post by: Toecutter on August 25, 2015, 05:43:40 PM
I've checked... Its dark, damn near black.

This drip is amber.
Title: Re: Leaking rear hub. '14 V7 Special
Post by: Chuck in Indiana on August 25, 2015, 07:54:42 PM
I've checked... Its dark, damn near black.

This drip is amber.

Ok, I assume you've stuck your finger in it.. :shocked: :laugh: and given it a whiff? If it's not gear oil, there might be a line loose in the engine breather system. (?) There's a ton of oil mist in it.