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The dipstick pipe isn't connected to the breather. The hole in the washer is to let the oil back into the crankcase . The plunger lifts ,if necessary,at high rpm to allow more crankcase gases to escape ,and I have never seen a blue sponge in the breather box unless it was placed there by somebody. The breather box should have a steel gauze in it for the oil gas to condense.Other than that everything is correct! @ @ \ / / ( ) \ \/ \___/ \ / \ / \ / \/ Bad Boy's VeeDubs Adelaide!! Type-3 Capital of the World!! +--------------------------------------------------------+ '62 1500 Variant 129530 '65 1500N Panel Van PV0075 '73 1600TL Variant aparoczy@ezinet.com.au ---------- > From: Melissa & Jim <jadney@vwtype3.org> > To: type-3@umich.edu > Subject: Crankcase breather > Date: Sunday, 16 February 1997 11:20 > > >From: Jeff &/or Paula <jknipe9@idt.net> > > >Could someone do me a favor and list the internal components of their > >Crankcase breather, top down? I wonder if mine is assembled correctly > >and/or missing anything. From top down I see: > > > >1. Plastic cap > >2. Spring (approx. 3cm.diameter x 4cm.length) > >3. Washer-like disc (approx. 4cm diameter with 1cm hole in center) > >4. Cup-shaped thingie with hole in bottom that nests into the breather > >neck, held in place by lip of cup. > > This is the correct array of parts for 69-71. [68s had a unique blue foam > "sponge" that iced up in the winter and caused trouble. Most of these have > been thrown out so if you have one it is a rare item.] > > >I would have thought a solid disc would lessen oil loss out the breather > >(as it is on a BMW boxer engine), though I realize you'd then have to > >fill oil through the dipstick tube. > > Indeed the dipstick tube IS where you are supposed to add oil. If you pry > the plastic cap off all the time it will soon stop staying in place. > > >Also, if the parts are correct as > >listed, what good does the cup thing do? The washer could just sit > >where the cup does... Anyhow, something doesn't seem right but I'm > >confident (hopeful? overly optimistic?) that someone here has the > >answers. > > I'm not sure why VW thought they needed both the cup and the washer. The > whole thing forms a bit of a labryinth that limits how much oil mist gets > out. All engines have some blowby, good ones just have less. The black > painted breather box allows the oil mist to settle out. The gas portion is > fed to the aircleaner to be burned up and the liquid portion either drips > back down the way it came, or down the vertical pipe that feeds back into > the sump via the dipstick pipe. > > The arrangement for other years was different, but yours was a very good one > that worked well. > > Jim > --------------------------------------------------------------------- > Melissa Kepner Jim Adney > jadney@vwtype3.org jadney@vwtype3.org > Laura Kepner-Adney > Madison, Wisconsin > ---------------------------------------------------------------------