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  #1  
Old 01-22-2015, 07:54 AM
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Location: fayetteville nc
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Thumbs up 300sd with 140amp alternator

Hello all. i recently had problems with the very subpar charging system of my mercedes. 1979 300sd om617 engine. i have installed a fairly strong stereo and since the alt just couldnt keep up. so i did the notorious saab swap only a cpl months later to have the regulator go bad and the auto parts chain no longer carries the 15651 cross reference to al129x on hand anymore... rather irritated me. as im sure many other mercedes owners have wondered.. wouldnt it be nice to be able to just go around the corner when an alt goes bad and swp it in the parking lot... well i may have found a way.... i installed a 140amp alt from a 2000 chevy ( gasp i know... american part on mercedes ) tahoe limited. to do this i had to change that horrid alternator adjusting bracket... i used an adjusting rod tensioner aka heim joint . the chevy alt comes with a six ribbed pulley.. i simple swapped my factory pulley onto it using the chevy fan. also purchased the correct harness for this alt and some thicker wire so i wont have any bad surprises. and a packet of 3/8 washers to fill in space on bottom bolt. Three washers behind the alt and one in from and the belts all line up perfectly.. Now when it decides to fail out I can go to any mcparts store and swap it out.. No more 3-5 day wait without your car. And also not too expensive of a swap. For my alt and harness both with lifetime warranties it topped out to about $200. And if you get the 2 1/2 in adjustable tension rod you can use the factory spec belts. I hope this helps others any questions just ask I will do my best to answer.
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Old 01-22-2015, 07:57 AM
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Sorry forgot to mention the Tahoe has the 350 5.7 liter engine otherwise you get a different alt. As soon as I can figure out how to post pics off of my android phone I will. pics are always nice.
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Old 01-22-2015, 08:56 AM
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Quote:
Originally Posted by enoch View Post
Sorry forgot to mention the Tahoe has the 350 5.7 liter engine otherwise you get a different alt. As soon as I can figure out how to post pics off of my android phone I will. pics are always nice.
Enoch,
Good info, got any pics?
Got any part numbers, GM or McPart?
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Old 01-22-2015, 04:15 PM
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dl1468-16-4 is the alt I used from that a-z store.. Not trying to advertise... And the harness came from a competitor PT5768 the O' store... If anyone can advise me how to load photos directly from an android phone I can show... As for the adjustable tension bar.. EBay special..
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Old 01-22-2015, 04:16 PM
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Oh yeah... The bolts are also from as.. Gm alternator bolts sold in a pack in the "help" section of the store.
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  #6  
Old 01-29-2015, 01:04 PM
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I'd like to see pics too. You could upload your pics to Imgur.com and then post the links. I'm sure there is an imgur app for android.
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Old 02-05-2015, 11:47 AM
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sorry, I can not yet mastered this help you
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Old 02-05-2015, 04:19 PM
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ok.. ill give this a try
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Old 02-06-2015, 06:45 AM
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Old 02-06-2015, 06:52 AM
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connector
Give this a try
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  #11  
Old 02-06-2015, 06:54 AM
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alternator
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  #12  
Old 02-06-2015, 07:01 AM
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Hopefully this weekend I will have time to get photos of the alternator actually on the car.. Been REALLY cold out here lately. Also when I installed mine I had ordered a 5 1/2 inch rod and its really long.. The 2 1/2 would probably be perfect.
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Old 05-06-2018, 12:08 AM
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Any news on how this worked out? Iím interested in doing this mod.
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