Alternator reinstall question on w115 - PeachParts Mercedes-Benz Forum

JordaanDMC-12 · #1 10-21-2009, 04:17 PM

Hey everyone I'm reinstalling my alternator on my w115 and everything is pretty much back in place except for the last thing... It's the adjusting screw on the top of the alternator that tightens the belt... I can't figure out of how to make it tighten up.. It's just loose and flops around and when I tighten the bolt nothing happens... please help, I want to finish this because it's hot outside... lol

1981_300sd · #2 10-21-2009, 04:24 PM

Just did this last week.

Are your other bolts loosened up at all? This needs to happen first, so the whole alternator can "flop around" lol. Then, tighten the adjustment bolt and it will in turn tighten the belt.

Once the belt is tight enough, you can tighten the other bolts.

If the other alternator bolts are not loose, you wont be able to do much when adjusting the the adjustment bolt.

JordaanDMC-12 · #3 10-21-2009, 04:26 PM

Quote:

Originally Posted by 1981_300sd

Just did this last week.

Are your other bolts loosened up at all? This needs to happen first, so the whole alternator can "flop around" lol. Then, tighten the bolt and it will in turn tighten the belt.

Once the belt is tight enough, you can tighten the other bolts.

If the other alternator bolts are not loose, you wont be able to do much when adjusting the the adjustment bolt.

That makes sense lol my bolt on the bottom is tight.. I'll give it a whirl thanks!!! Damn this is a PITA lol but I love how it's not at a mechanics

79Mercy · #4 10-21-2009, 04:28 PM

So did your alt test OK?

JordaanDMC-12 · #5 10-21-2009, 04:31 PM

Quote:

Originally Posted by 79Mercy

So did your alt test OK?

Yeah thankfully! I took it to autozone and they couldn't test it because the numbers on their little alternator machine didn't match up or something

So they recommended this place that rebuilds alternators and starters and the guy there tested it for me and said it was charging...

So I went home and spiced the wires that were in bad shape and probably causing the problem and now finally putting it all back together... I can't wait to finish! LOL

79Mercy · #6 10-21-2009, 04:46 PM

good im glad its still OK, i told you to check the wires.

Good luck

JordaanDMC-12 · #7 10-21-2009, 06:50 PM

It just doesn't end lol

Well I finally got the alternator in the bracket and hooked up all the bolts and asked myself "why is it still moving around even though it's tight? Yup, you guessed it.. It needs alternator bracket bushings now -___________- AND on top of that the bottom oil cooler line is leaking profusely to the point where I need another oil cooler line before I drive anywhere now..

On the plus side my generator light turned off on my dash!

the only thing that really sucks is the stupid bushings.. I'm going to have to do this ALL over again and I'm not looking forward to that -____-

79Mercy · #8 10-21-2009, 08:15 PM

empty your inbox

JordaanDMC-12 · #9 10-21-2009, 08:55 PM

Quote:

Originally Posted by 79Mercy

empty your inbox

Ok it's empty now, woot

Diesel911 · #10 10-21-2009, 09:25 PM

Watch out for the threads stripping on the Oil Cooler when you remove the Hose Nuts.

charmalu · #11 10-21-2009, 10:55 PM

Use a 7/8 open end on the oil cooler and a 1 1/16 for the oil lines.
Make a flairnut wrench out of a 1 1/16 box wrench.

If the oil cooler threads do strip, there is a repair kit from MB called screwed nipples. for real.

Charlie

JordaanDMC-12 · #12 10-22-2009, 03:47 AM

Quote:

Originally Posted by Diesel911

Watch out for the threads stripping on the Oil Cooler when you remove the Hose Nuts.

Okay, cool.. It just so happens we don't have a wrench that size so I have to go buy one tomorrow to take it off.. I'll be careful though! Thanks!

JordaanDMC-12 · #13 10-22-2009, 03:52 AM

Quote:

Originally Posted by charmalu

Use a 7/8 open end on the oil cooler and a 1 1/16 for the oil lines.
Make a flairnut wrench out of a 1 1/16 box wrench.

Thank you for the wrench sizes! We didn't have the right size so I need to go buy it today lol

Quote:

If the oil cooler threads do strip, there is a repair kit from MB called screwed nipples. for real.

LOL!!! I could just see myself walking into the MB parts department and being like "Hi, I'd like to order the screwed nipples kit please"