If it just stopped charging & didn't make any death rattle , just replace the voltage regulator , it's under $20 for the better Bosch branded one , I'm on the road else I'd have the specific part # to get but others will have and post it for you , be aware the parts counter guy will try to B.S. you into taking the crappo ones he sells , be smart & order up two Bosch ones and save the second one .
FWIW , many " rebuilders " now bead blast the rotor and this roughs up the slip rings where the brushes ride so they wear out rather quickly . if you have a low buck alternator that died , try replacing just the voltage regulator as it comes with the new brushes as part of it , once the old brushes have worn out the slip rings have been polished smooth again so the new reglator should last longer .
I really cannot say to many good things about the Bosch branded regulator , it actually makes the wimpy original 55 ampere alternator work correctly and charge up to 14 volts much of the time .
Remember : _ALWAYS_ disconnect the ground cable off the battery before any electrical repair work ! I like to remove the battery & soap & water wash it then leave on the _lowest_ charge rating whilst I clean the accumulated leaves out of the battery box then replace the voltage regulator so everything is tip-top when I button it back up .
-Nate
Carl wrote:
>
> The one I just put in died. Does anyone care about quality anymore? What brand do I need to avoid replacing these so often?
>
> Carl
>
> --- In diesel_mercedes@yahoogroups.com, diyernh <diyernh@> wrote:
> >
> > I'm on my 2nd alternator in about 6 or so years. I am in new england
> > and do have some cold times that the battery just can't quite start the
> > engine. My solution is, I added my Honda 2000 camping generator in the
> > trunk. I have a small battery charger and an extension cord. I can
> > charge the battery, plug in the block heater, or just run the extension
> > cord and battery up under the hood for electricity while driving. It
> > also can run lights if I break down at night.
> >
> > Yes, I just replaced the battery, glow plugs, alternator, and belts. I
> > would rather just continue my trip rather than waiting for hours for the
> > auto club towing.
> >
> > Carl
> >
> >
> > On 12/15/2010 6:22 PM, max_stemple wrote:
> > >
> > > My 240 automatic seems to go tru alternators for some reason. I think
> > > its up to about 6 or 7 now. Could be because I bought a Schumcks
> > > lifetime and keep replacing it. One time my boy and I were driving
> > > home from Reno, on a Sunday, which I figured no problem, we will stop
> > > at the first Schumcks and get a new one. Nevada, the way we drove did
> > > not have many Schumchks and when we found one, the guy said Mercedes?
> > > with a dull look on his face. So we just kept driving. When it got
> > > dark my kid had a brilliant idea to upplug one headlight to conserve
> > > power. In about 30 seconds(after driving for hours without seeing
> > > anyone) a cop appeared right behind us with flashing lights, he told
> > > us we had a headlight out. We thanked him and plugged it back in. Kept
> > > driving to some town that I cant remember and bought a new battery for
> > > when ours went dead. Well we kept on driving and made it north of
> > > Spokane when the headlights went out. It was about midnight. Exchanged
> > > batteries, never turned off the engine and drove a couple more hours
> > > home . We never did turn off the engine after leaving Reno first thing
> > > that morning. I was amazed at how far we got on the battery. This is
> > > why I always have a spare alternator in the trunk of this car on long
> > > trips. Now my 240 4-spd, I've never had any problems with the
> > > alternator. I wonder if its a Mercedes still? Max p.s. both 240's will
> > > be for sale soon
> > >
> > >
> >
>
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