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Discussion Starter #1
Another question I need a little advice on. Changed all my fluids front to back. Rear diff had a little water at the bottom when I first opened the plug. I was putting the cv boot skid plate back on and see the breather expansion thing had a cut in it, looks like from the pressure washer. Should I replace it or are most people routing vent hoses up real high or what. Thanks for the help
 

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If it's a bellow just replace it, If it's a hose tube run it up to to where your fuses are. For an extra layer of protection install a gas fuel filter on the end of all your breather lines, it acts as a one way valve but still lets Ur diffs and rad vent
 

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In my opinion is replace it with another bellow.. I don't know why can am went away from them, it's a great design.
 

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:smilietwocents::cool:So for my 2C of advice the bellows is a tool that allows the diff to slightly pressure up and prevent water incursion upon the diff striking ice cold water/ compared to the temp of the internals on the diff. I had the tube up to the pod and removed my bellows and I still got water in them. Now its possible the seals are bad but remember, there are zero signs of diff fluid leaking so why does water get in but no diff fluid out???? When the diff hits the water the thought is it quenches and creates a vacuum drawing in the water so the bellows prevents the vacuum. I have replaced my lines with the bellows. If you are in doubt hit youtube and look for the Ostacruiser channel and look how much time these Saskatchewan boys spend in the water, you will be amazed and they are the ones that gave me the advice, just something to think about.:th_smiliethumbsup:
 

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?? x2.. By the way love watching those guys.. Main reason why I break so much stuff lol
 

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Shaft Oil Seal TC 30x47x10 Rubber Covered Double Lip Grater | eBay

I installed a couple of these in my xmr as they have a double lip seal vs the single lip that originally came in it. I have vent tubes ran up to my snorkels and haven't had any water intrusion since installing these seals. Not sure if these are the same size on all diffs but a little searching will tell.
 

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Discussion Starter #7
Cool. I'll grab a new one then. They can't be much to replace. I might just buy a spare.

Thanks for the info as always!
 

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I had the tube up to the pod and removed my bellows and I still got water in them. Now its possible the seals are bad but remember, there are zero signs of diff fluid leaking so why does water get in but no diff fluid out???? When the diff hits the water the thought is it quenches and creates a vacuum drawing in the water so the bellows prevents the vacuum. I have replaced my lines with the bellows.
It greates vacuum when submerget in the water, yes. Notice you have oil level BELOW halfway. When you go water, the whole thing is underwater. So seal is leaking somewhere ABOVE the halfway. The oil is just splashing inside, so it won't turn out as a oilleak to outside, just water leaking inside.

You can spray leakdetector (or soapwater) to your differential and GENTLY blow air inside the differential and see where it leaks (bubbles). Use breather connection to blow air in. Don't use full air pressure!!!! That will destroy your seals!!!
 
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