question on rear differential on quad

[coonchaser]

i've got a 02 yamaha bear tracker and its pushing gear oil out of the breather hose for the rear differential the hose comes out up by the gas tank and seat area and its leaking out of the hose, not a ton but enough to notice it etc...

[Dave S]

Has there been any maintenance done on the machine recently? Has it been upside down recently? any high-speed long-distance runs?

[efgh]

Your Diff. probley has some water in it, I would change the gear oil.

[coonchaser]

I think i will just change it, but it has not been upside down or in water or anything it was run probably 20 miles in extremely cold weather and just started puking it out, nothing horrible has happend or no noise or anything i was just curious, i'll just drain it and start over see how that works thanks guys..

[Dave S]

It doesn't really sound like it's going to be much of an issue. The machine is 10 years old and is likely to show some signs of dampness.

My guess is the oil may see a small amount of vaporization and will eventually work it's way up the tube with the little pressure the rear diff. actually creates.

[McGurk]

If you drain it note the color of the fluid. If it is milky you will want to top it off, run it a bit to circulate it, and drain it again while it is warm. Fill it again and check the color after using it again.