Nevada rear drive leak - fixed itself ?

[s151669]

My Nevada seems to have mind of it's own. Just as I pressed order on bunch of parts, the rear drive started to leak. There was a coin sized oil stain on the rear wheel. Definitely smells like oil.

Oh well, I can get the seals from local bearing supplier. And I was going to take the rear drive off anyway.

However, I have kept riding the thing and it seems that it does not leak oil anymore. Not a drop to be seen, rear drive casing is bone dry.

What just happened ?

[Dukedesmo]

As a Land Rover owner, as long as it is leaking you know there is oil in it - have you checked the level?


On a more serious note, can overfilling cause a leak?

[Frenchfrog]

my small block did exacatly the same but erratically.In my case I think it was because the casing was over pressurizing when I was driving hard and in high summer heats.I solved it by modifying the venting system in order to have a venting tube leading up over the top of the frame which allows the oil to expand and vent but go back into the casing when the pressure lowers.

[s151669]

Level was checked last year when the full contents leaked from the drain hole due missing aluminium washer. Filled until overflowed from the rear hole. Checked the breather while I was at it and it flowed freely both ways.

[Dukedesmo]

The over pressurising as above sounds a likely cause, does it have a vent?

[Tkelly]

Sounds like it is ok since you recently filled it and it isn’t leaking now.

[s151669]

Well, checked the breather again. Basically it is a tube with "umbrella" over it. Before the "umbrella" was rotating freely and it had some vertical motion too. Now it was stuck in place very hard. Seems that combination of oil fumes and dust had done their work and rendered the breather non breathing.

Of course I could have verified that if I had removed the breather and tried to blow through it but now that I jiggled the "umbrella" free I can't do it anymore until that happens again ;-)

Hopefully that was it.

[sign216]

Well, checked the breather again. Basically it is a tube with "umbrella" over it. Before the "umbrella" was rotating freely and it had some vertical motion too. Now it was stuck in place very hard. Seems that combination of oil fumes and dust had done their work and rendered the breather non breathing.

Of course I could have verified that if I had removed the breather and tried to blow through it but now that I jiggled the "umbrella" free I can't do it anymore until that happens again ;-)

Hopefully that was it.

Yep, the breather on my V7 closed up too.  I cut a line in the top to open it up.  Water might get in when I ride in the rain, but the bike is stored sheltered.

[Frenchfrog]

You can use the spigot on the breather to fit a breather tube that then can run high up on the frame to eliminate any breathing issues.Looks a bit McGyver but works and stops those leaks onto the tyre as long as the seals are good.