I am trying to replace the voltage regulator on my 83 300D. There is a plastic cover on the back of my alternator that I need to remove before I can acess the regulator.

There is one 8MM nut that is under the mounting bracket for the tensioner that is a PITA to get to. Ive tries a 1/4 drive ratchet with the 8MM socket, as well as an 8MM wrench. There doesnt seem to be enough clearance.


Anyone have any suggestions????????

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1983 Mercedes 300D
Atlanta, GA

Take a look at these photos and tell us what "cover" you are trying to remove. Does it look like these?

http://catalog.worldpac.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&cookieid=1CQ0J3JZ429711656L&year=1983&make=MB&model=300-DT-001&category=All&part=Alternator

Here's a pic of the back of the re-man alt I had on my '82 300D. The VR, on this one fortunately, no cover.

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83 SD

84 CD

those pice obviously dont have the plastic on the back that I have on mine.... Im going outside shortly to take a pic of my alternator.....

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1983 Mercedes 300D
Atlanta, GA

I've never seen one with a cover, I'm curious.

I beleive its an aftermarket/replacement alternator. The original shouldnt have that cover.....


Im waiting for the battery on my camera to charge so I can take some pics.......

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1983 Mercedes 300D
Atlanta, GA

Here is the pic.....


http://i270.photobucket.com/albums/jj104/superbeast1098/IMG_02031.jpg

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1983 Mercedes 300D
Atlanta, GA

The alternator needs to come out for sure.

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DJ


84 300D Turbodiesel 190K with 4 speed manual sold in 03/2012

I agree w/lietuviai & you. It must come off, and that cover has to be an aftermarket concoction.

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Don't Chrome them; polish them

... or a later model Bosch.

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Gone to the dark side

- Jeff

that cover looks like the one on my 143amp Bosch alt that i put on my 91 300d and if it is a bosch it should have 3 small screws on the back and once the screws are removed the cover is just sort of snapped on,if i remember there are 3 places where you have to use a flat screwdriver to release the catch to remove the cover.I am pretty sure i could do it with the alt on the car now that i have seen how it is removed,but for the first time it will probably be better to do it on the bench. My $.02 Don

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Red Green "This is only temporary,Unless it works!"

97 E300D 157000 miles
87 300TD ?141k? miles

You may be able to remove that cover, but it would be a tight fit. Seems there are some nuts holding it on. Will need to be removed before you can replace VR.
Break it off? I don't understand it's purpose. If you have a NA engine, much easier to deal with.
Here's the alt in my CD.

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83 SD

84 CD

Mines a turbo. But if I can get the nut off, I might be able to remove the cover without removing the whole alternator..... At least that is what I am hoping....

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1983 Mercedes 300D
Atlanta, GA

oldiesel may be on to something, a stronger alt.
Here's a pic of the VR I have on hand when the next one goes.
Removing the turbo "U" tube will help, were you to swap out alt, looks like that has been done, after viewing your photo. Not necessary to replace VR.

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83 SD

84 CD

Hmm, what wiring do you have going to that? obviously, not stock.

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!