It has never been clear to me either; somehow the vent apparently allowed oil into the clutch housing which caused it to slip. They apparently then came up with this tube to reroute the vent. See if this info clears anything up.
Re: Baffel in WD45 belt pulley gear compartment in reply to Brian G. NY, 12-31-2012 13:37:01
Well according to your schematic, If there is no line going to the 90 fitting, then it must be supposed to be turned down, so oil can't enter. I had a lot of oil inside my bellhousing, because of the seal leaking around the jack shaft. I got it cleaned out and went to Bearings INC. and bought a seal that works well. the old seal didn't have a number on it, and my manuals didn't list a part number, so I took the old seal in and had it measured. They used a co2 fire extinguisher to quick freeze the rubber on the old seal, so it would not depress the rubber when using their calipers. I am going to post the replacement seal number here for anyone that might need to replace one. It is a CR12830, and fits snugly on the shaft, and is a press fit in the bellhousing recess.Acording to their measurements, it measures 1.281 ID and costs $6.49+ tax.
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