The guy I bought my 2008 Brute from (~240 miles on it), liked to do burnouts in 2WD so the rear tires are far more worn than the front. He was honest about it, etc...
Anyway, I noticed that there is some grease/oil from the exit of the crankshaft on the back of the engine. I've been through the service manual and it shows there is a seal there. I have a 2006 Brute (140 miles) and there is no sign of oil there.
I don't know if this was a point that was oiled and left over (tonight I've wiped it clean and will ride a bit then look but from what I recall the oil is still fresher than not).
Anyway, with low hours I'm wondering if doing burnouts would cause the rear tires to rotate at an excessively high RPM (given low friction/force from just locking front brake and cranking up the engine) and possibly heat up the rubber seal causing it to fail? In a way, it seems unlikely given the engine should peak out, etc. and even though the guy liked doing burnouts (he's a gear head so understands about red-line, etc.), it would seem that he would need to back off the throttle before RPM's went too high for fear of blowing the engine. If he maintained reasonable RPMs within redline then shouldn't that rear seal function properly given the rear shaft should NOT experience some sort of over-speed that would cause excessive heat and then premature failure of the rear seal?
OK, so, all that said, maybe some oil leakage is ok and I'm fabricating cause/effect above ???? :shock:
Engine purs like a kitten and she runs like an absolute top. No complaints at all...except concern about this. Again, my '06 Brute is bone dry where the shaft leaves the engine.. hence my concern. What oil is that burning? Not engine oil and not rear diff oil so usual bearing pack grease? If that is the case then it would be easy to run that grease out and then burnout that bearing.
???
Thanks guys for any insight/thoughts.
I noticed this when I took the rear wheels off to replace the rubber from his burnouts!
Anyway, I noticed that there is some grease/oil from the exit of the crankshaft on the back of the engine. I've been through the service manual and it shows there is a seal there. I have a 2006 Brute (140 miles) and there is no sign of oil there.
I don't know if this was a point that was oiled and left over (tonight I've wiped it clean and will ride a bit then look but from what I recall the oil is still fresher than not).
Anyway, with low hours I'm wondering if doing burnouts would cause the rear tires to rotate at an excessively high RPM (given low friction/force from just locking front brake and cranking up the engine) and possibly heat up the rubber seal causing it to fail? In a way, it seems unlikely given the engine should peak out, etc. and even though the guy liked doing burnouts (he's a gear head so understands about red-line, etc.), it would seem that he would need to back off the throttle before RPM's went too high for fear of blowing the engine. If he maintained reasonable RPMs within redline then shouldn't that rear seal function properly given the rear shaft should NOT experience some sort of over-speed that would cause excessive heat and then premature failure of the rear seal?
OK, so, all that said, maybe some oil leakage is ok and I'm fabricating cause/effect above ???? :shock:
Engine purs like a kitten and she runs like an absolute top. No complaints at all...except concern about this. Again, my '06 Brute is bone dry where the shaft leaves the engine.. hence my concern. What oil is that burning? Not engine oil and not rear diff oil so usual bearing pack grease? If that is the case then it would be easy to run that grease out and then burnout that bearing.
???
Thanks guys for any insight/thoughts.
I noticed this when I took the rear wheels off to replace the rubber from his burnouts!