W116, BENZ AID - COMMON QUESTIONS AND ANSWERS

85 300TD A/C belt keeps coming loose.

I'm having an issue with my A/C compressor belt on my 85 300td. It keeps coming loose.

When I bought the car 2 months ago, the belt was missing completely and I was not sure if the A/C worked or not. I installed a new conti belt. The a/c works perfectly except after 200 miles or so the belt comes loose. Yesterday I checked the belt and now it looks slightly chewed up on one side.

I'm not sure if the problem is A/C pulley or something else.

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1982 300DT vacuum troubleshooting

I recently purchased the Vacuum Troubleshooting kit and have begun to tackle some minor issues with my wagon.
Right off the bat I find something not specified in your manual.
I started with a vacuum pump test and my gauge is reading 16.5 inHG. When I remove the line from the booster it reads 19 inHG - neither seems REALLY low, but are below the 20-23 inch range.

I have two questions:

1. Is there a way to determine if my checkvalve is leaking versus a slow leak in the pump itself?

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1974 450SL -mechanical door lock problem

My mechanical door locks work well -from the inside of the car, at least. I cannot unlock either doors from the outside, using my key. It looks as if the key doesn't travel far enough do disengage them.) I'm thinking there must be some problem with adjustment of the two long arms that travel from the lock mechanism to the interior door locking lever? This problem is driving me a little batty.

The vacuum locks don't work, either, but I'm thinking that's a separate problem to be resolved AFTER the mechanical locking issue.

Doc

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82 300SD Blower Motor Success Story

Installed new blower motor brushes today on my w126 '82 300sd -mine were worn down to nubs n(car has almost 400k on it) and I think the little brush springs had nothing to push against due to wear, Interestingly, I was able to operate blower with direct current from battery outside of the car on a vice but I think there was enough resistance in the car via internal wiring to prevent blower from operating. Car all cool -thanks Kent!

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