Gear Oil Leak-"EVO" 150 By jomama0867 (Read 698 times)

[jomama0867]

   I have recently been noticing a few drops of oil on my rear wheel in the morning while unlocking my scooter. I suspected the Gear Oil Drain Bolt at first, and sure enough it was a little loose. After tightening it I kept seeing the same oil spot every couple of days, but never discovered it's origin until I was checking my clutch. The seal between the CVT and gear housings seemed to be leaking (oil on the shaft), so I ordered a replacement. Meanwhile, I coated the outside edge of the seal with some Blue RTV and checked it after a couple of runs, it seems to be holding! Problem solved? NO!
   When the oil spot kept reappearing, I decided to check the other side of the wheel (needed to replace the drum brake pads anyway), and found out that although worn the brakes probably would have lasted a bit longer if they hadn't been COVERED IN GEAR OIL! The leak is coming from the bearing / seal pictured below:


My problem is that I can't seem to identify exactly the part to order. There is a local Taotao warehouse (handy, huh) but I haven't been able to find the part in their 3044 listed items, and contacting them (without physically showing up at the place)takes forever! If one of you "gurus" can help me identify the part to ask for (and maybe where to get it) I will be ETERNALLY grateful . . . well, maybe not eternally . . .

[cyborg]

i think removing the old one without mangling it and taking it to the parts house is the way to get a new one to be sure it's the direct replacment part,,,get two they are inexpensive and you have a spare incase it reoccures,,,also check the shaft for burrs or anything that can cut or make the seal wear prematurely

[Alleyoop]

You can find them online the P6 is the rating which is the Precision Rating on the bearing 6 is high quality.

[jomama0867]

Thanks, guys! Ordered the bearing (and seals), is this something that can be done with the engine still mounted? I didn't see any relevant articles in the archives (my favorite "crutch")! Also, I've heard that "makeshift" drivers (PVC pipes, etc.) work just as well as spending money on tools you might only use once; any thoughts on this?

[Alleyoop]

scooterdoc.proboards.com/thread/2441/custom-oil-catch-tank

[jomama0867]

Many thanks for the info, Alley! Are you saying that this could be a crankcase breather problem? I DID recently do away with my stock airbox and replaced it with a free-flow filter!

[Alleyoop]

No, I missunderstood this Sentence " Also, I've heard that "makeshift" drivers (PVC pipes, etc.) work just as well as spending money on tools you might only use once; any thoughts on this?"

But your tranny should have a VENT HOSE and it should be able to vent otherwise the tranny will created a lot of pressure just like the valve cover vent hose if kinked or plugged.
Alleyoop