Ok, I will be removing the alternator to inspect it, i think i remember seeing a little dark stuff on the slip rings, but dont think it was as bad as it was in the picture.

Instead of just doing a voltage test, i am thinking of checking what the current output of the alternator is. i will connect a Light to the battery and drain it for an hour or two. make sure the voltage does not drop below 11v. this should cause the alternator to send ample current to the battery to charge it. I will connect a current clamp to the alternator wire and see what the output is.

I have not had any issues with it draining and battery being low. i have driven it for 200+ miles, since i bought it, and battery has not been low. So i would suspect that the above test would show me that the alternator is able to charge, but not sure if the slip rings will cause the the light issue.

__________________

Grey '91 350SDL 214k Dad's car
Beige '81 240D 4 Speed 254k SOLD
Blue '82 300D 225k SOLD
White '95 E300D 46k SOLD
Blue '87 190D 2.5 Turbo 315k SOLD
Brown '80 240D 4 Speed 716k SOLD
Beige '80 300D N/A 119k SOLD
Blue '85 300D Model 186k T-Boned