W110 W111 W112 Sedan, BENZ AID - COMMON QUESTIONS AND ANSWERS

Engine size for 300SD

Me again. I asked a question about my 1978 300SD with a bad engine. I can get a really great deal on a low mileage 300TD engine and would love the increased power. My dad thinks we can just swap them out as long as they are the same size. Is there a size difference? It is hard to tell by looking and is really hard to measure.
Or should I just keep looking for a nonturbo engine?
(Don"t know how long the turbo engine will be available so please tell me something)

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Squeek, Squeek, What does a worn water pump sound like?

I have a wonderful Anthracite Grey 1984 300TD - with 290,000 miles on it. Lately, at idle, it has begun to make a little squeek, squeek noise, kinda like a bird chirping from somewhere around the belts. It is slowly growing louder, and sounds to me like a bearing is going out. Is this what a worn out water pump sounds like? It seems to me that is what it is. I suppose it could be a worn out alternator. What are the typical symptoms of a worn water pump?
-Levon-

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82 300TD brake calipers wont collapse

I was trying to do the simple task of replacing the front brake pads on my '82 300 TD wagon. I was able easily able to get one of the pads out, but the other one, the one closest to the car, I was unable to get out. When I would try to push the current brake pad back into the caliper to make room for the new thicker pad, it seemed like the pad was frozen in place. It would not budge. I tried tapping on it with a hammer, blasting it with dynamite and it would not move. Is there something that I am missing, or does this mean I probably need to get a new set of front calipers?

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1980's 123 series Clear Coat problems

Short of a re-paint, is there anything that can be done about peeling clear coat? I understand that older 123's had clear coat applied over the paint at the factory. I understand that current paint practice is to mix clear coat with the paint color which supposedly eliminates the peeling problem.

It would be nice if a ....rattle can...solution of clear coat could be applied. Does anyone have experience with this? Any other ideas as to how to fix this problem?

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560sel ignition coil

Have a 1990 560sel with 127k miles. Want to start changing the oil myself via the dipstick. Other sites say that it's best to disconnect the ignition coil before cranking the engine over after the change. This prevents too much strain on the timing chain. Have a repair CD but the coil is not behind the EZL as shown on the diagram. Looking for the location of the coil. Thanks.

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Bosch Duratherm for a 1980 240D

I bought a Bosch Duratherm glowplug upgrade kit off of Fleabay since Kent was out(same as this one : https://mercedessource.com/node/691)

At any rate, I get the box and on the side it says W123D 08.80- which
to me means from August 1980 on. Well my 240D was born in March
1980. I do have my 1982 parts car in the garage and it does have a
different glow-plug set-up than my 1980.

I could cannibalize the parts car glow-plug setup and transfer it
over to the 1980 recipient car as it will eventually get the 1982 motor
as well.

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