Re: [diesel_mercedes] Re : water pump bolt I can not reach question 1978 300D

 

Actually, that's not REALLY an aftermarket AC system.  That's how MB did it on the early 123s, with the York compressor.  It may have been installed by the importer (which was MB North America), though they had the full Chrysler AutoTemp II servo, buttons and temperature dial, vacuum lines, etc., all factory-like.

I used a Craftsman 1/4-inch drive deep well socket with adapter to 3/8-inch drive ratchet to get that bolt out on my '77.  The 1/4-inch version has a thinner wall than the 3//8-inch.  Try to use a 6-point; they're less likely to strip the bolt or to crack.

How's the AC system?  This is a good time to either replace or rebuild the York compressor, as it's got to come off to get to a bolt (or two?) to remove the mounting bracket.  Rebuild kits are still available, price is something like $12 to $15.

This job is a big-time PIA....

Mark in Lakewood, CO

From: "Nate" <vwnate1@yahoo.com>
To: "diesel mercedes" <diesel_mercedes@yahoogroups.com>
Sent: Monday, August 22, 2011 10:34:01 AM
Subject: [diesel_mercedes] Re : water pump bolt I can not reach question 1978 300D

 


That bracket appears to be the mount for the aftermarket AC system your car is equipped with , sadly you'll have to loosen or remove it , usually there's a 90° bend in part of the bracket , find that and the bolt in that bent part , loosen or remove to allow sufficient movement to access the bolt .

Remember to hand file the opening in the bracket so the next time you'll be able to reach this 10MM ATF bolt easily . use a large round file only to prevent stress cracks from occurring .

I hope this helps .

-Nate
Rodger wrote:
>
> Hello All
>
> I am trying to change the water pump on my 1978 300D.
> I have removed the radiator, fan & fan shroud.
>
> There is one bolt on the water pump I can not reach with a wrench or socket. There is a large bracket that seems to hold the power steering pump in the way. I removed the obvious bolts holding the bracket and it still does not move.
>
> I posted photos in the photo section in an album called
> "Rodger's Questions"
>
> Please advise.
>
> thank you
> Rodger
>

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