W116

6.9 transmission pump

the transmission in my 6.9 has become all neutral. no engagement in any gear. this happened just after i started the car in the morning. i backed up about 3 feet, and that was it. prior to this, it worked perfectly, with no noises or malfunction of any kind. when i checked the fluid level it was very high. can anybody tell me anything? it was suggested that i check the auxiliary trans pump located below the ac compressor? help!

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Auxiliary electric water pump needed?

I'm going to order and install the Climate Control Servo bypass kit for my 1980 300SD. The original servo is no longer working, neither is the auxiliary pump, and I'm tired of no heat control. Right now it's all heat all the time. The auxiliary pump has been broken for a lot longer than the servo, and I've been able to get adequate heat from the climate system. My question is, do I really need the auxiliary pump? I know it's recommended, but aux pump only really works during idle. Why can't I just put a U shaped pipe there in place of the auxiliary pump?

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grease for a window regulator

This is about window regulators, specifically on my 1980 300SD (W116). The drivers side window regulator is broken, and MercedesSource has a new replacement for it, but no instructions available with the new part. After examining the broken regulator, I believe that a lack of grease (or lubricant) on the regulator slides contributed to the failure. Further, my other windows are moving slow or binding up, and I suspect that lack of lube is responsible for that slowness as well. Trouble is, I don't know what grease to use on the regulator mechanism. Grease isn't just grease. It's formulated to work at a certain temperature, under specific conditions, and I'd bet the grease on a window regulator is altogether different than wheel bearing grease, for instance.

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