W116, BENZ AID - COMMON QUESTIONS AND ANSWERS

someone put 134a in my '84 SD. Can I go back??

I was getting things together to get started, new drier, new expansion valve, refrigerant and 'oil..' I was going to draw it down today-- and get to work this afternoon.. My freeze-12 (drop in "Freon" replacement) arrived a couple days ago.. Here's my problem.. Uncapped the lines, to find one has been "retrofitted" to 134a. My questions are: 1) can I just wrench that off?? It looks like it's just a screw on fitting. 2) the BG refrigerant oil is compatible with both 134 AND R-12 "freon" so I'm thinking that isn't an issue.. 3) do I need to replace the receiver drier and expansion valve, and pretty much, go on with my life??

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valve orientation when installing manual climate kit

I have a question about the "Manual Climate Control Override" kit, specifically about installation of the valve included in the kit. The valve has an arrow on it, apparently indicating flow direction. But there was nothing in the MercedesSource instructions addressing valve orientation. Does it matter which way the coolant flows through the valve?

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Getting WVO From Outside Drums

I am seriously considering getting one of Kent's dual tank kits for WVO. I have found two good sources for WVO that put out about 60 gallons a week each into outside drums or a large dumpster kind of thing. The oil looks okay and I can see through it in a sampling jar. I am still letting it settle out. My question is about the exposed dumpster and drums. It could get all kinds of things in it. Sometimes the lids are part off. Is this okay as long as you let it settle for 3 weeks and then filter it carefully? Bill Brewer Tehachapi, CA

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Diesel "wobble" & groaning turning right

I have a 1984 300SD & it has developed a "groaning" sound when I turn right. I jacked it up & with the car running turned the wheel, no sound (most likely because it does not have the weight on it). I grabbed the tire I turned the tire hard manually & got a little noise from what I believe to be the "Guide Joint" on the top of the Steering knuckle. It looks to be in great shape. Any tips to solving or isolating the problem?

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