[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [New Search]
Slowly but surely my AAR is getting better. I've been warming it, manipulating it with a screwdriver, oiling it, letting it cool, and it gets smoother each time. It's gotten to the point where I can watch it rotate inside the housing and close up. The last little bit has been getting the AAR to turn that last few degrees smoothly and close completely. I think one thing that seems to help a little is to use PB Blaster to cut some of the gunk in the device- I don't think this thing is really frozen with corrosion alone, but rather gummed with decades of gummy, oily residues from the air cleaner. The last couple of cycles seem to have benefited from me spraying a little brake solvent in there to wash out the loosened crud. I then re-oil. Interesting thing about how the mechanism works. Fully open there's a round orifice that lines up with the lower tube. This starts turning to the right- and it turns very quickly, a few seconds and the round orifice is pretty much shifted away from the tube. This would coincide with the initial fast idle needed at immediate startup. Then the rotation slows down. The rotating cylinder with the orifice also has a groove about 2mm wide to continue to let in air. This keeps rotating to the left slowly and continues to let air in until the groove no longer faces the lower tube. At this point I can blow air in only with difficulty. >From fully opened to fully closed, it appears to take around 10 minutes. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~