Oh ok. Got it!

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1990 190E 3.0L

what size socket do I need to remove pulley from old alternator?

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1990 190E 3.0L

Either 22, 24, or 27mm. I cant recall exactly. I think the smaller alts were 22/24 and the bigger ones were 24/27.

__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k

I just picked up the alternator today and 2 gauge wire.....this alternator seems pretty big. 1995 S 600. So this is just a simple unbolt old alternator and put on new one with new wire? I've never done am alternator job before. Do I need to remove anything to get to the alternator? How many bolts are holding it on?

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1990 190E 3.0L

need help connecting wires back to alternator and car. Can I connect the alternator B+ directly to positive battery terminal?

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1990 190E 3.0L

The alternator is held on by two bolts. Loosen the belt up, remove it from the alt..take the two bolts out and bam! free!

The B+ can be connected DIRECTLY to the battery. In fact it should to minimize voltage drop.

Here are pics of my alt/pulley:

Note black pulley IS the m103 pulley whereas the grey pulley is the one that the alt came with..

__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k

I'd be cautious taking JD's advice. He's not much of a mechanic. If you'll notice, there's not a single hammer sitting on his work bench!

Mere amateur!

__________________
“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.”
― Brian P. Cleary, You Oughta Know By Now

Alternator has been officially upgraded!
high speed aux fans, a/c, window defroster, dvd, 50w hid, 55w halogens.....voltage at 12.9! And with a light load idling in P, voltage at 14.5! I'm satisfied. Thanks JD for the help.

__________________

1990 190E 3.0L

Here is my toolbox.. It comes with a remote control for the door!

Somewhere in there is a hammer!



Currently...this is in there.

__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k

Which alternator did you end up with the 143 or the 150?

Is the 12.9 at idle? If you give it a little bit of throttle with that load..what the voltage go to?

Glad to have been able to help! Its a worthwhile upgrade!

__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k

I have 120 amp I think.....or whatever is for the '95 S600. Yes, 12.9 with extreme load and if I give it gas it climbs up to 14+. I love it! I did notice that my car seems like it wants to "jump" now if I am at a light, but the idle is at about 5000 rpm, same as before. Also I notinced that I need to start braking sooner

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1990 190E 3.0L

I hope you meant to type 500! Mark

Yes ! 500, not 5000, typo

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1990 190E 3.0L

Hey, since my alternator upgrade, I also noticed that the lights inside my window switches on the center console are a lot warmer. If I dim the lights they aren't as warm. Iud this because of the higher output of the alternator? I haven't had any problems, just noticed them being warmer.

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1990 190E 3.0L