r170/w202/eaton m62 clutch removal - Mercedes-Benz Forum
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#1 (permalink) Old 06-17-2013, 01:48 PM
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r170/w202/eaton m62 clutch removal

I've searched and read many posts on the r170/w202/eaton m62 supercharger, not only on here, but on the internet... there was even a post on benzworld on how to replace the bearing...

I have a 99' w202, but same engine as the slk230 - the m111.975 - now, on to my question: I bought a brand new clutch assembly for the kompressor and want to replace it, I just serviced all of the tensioners, pulleys, and belts and was going to replace the s/c clutch and pulley as part of that, unfortunately, I was unable to get the s/c out, and tried getting the clutch off with the s/c mounted on the engine - was also unsuccessful as in all of my attempts, the clutch would just spin, I tried using the old serpentine belt to hold it, tried vice grips, no luck.

My question to you: how/what's the best way of removing the clutch assembly? DO i have to remove the s/c - is this easier? Would I need something to put between the rotors in the back to stop the clutch/rotors from rotating when I attempt to unscrew the 8mm bolt on the front of the "unidamp" clutch?

Please advise!
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#2 (permalink) Old 06-17-2013, 04:04 PM
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Disconnect the barrel shaped two pin plug and put 12v/earth directly to the clutch? That'll engage it to remove the bolt.

Whale oil beef hooked!
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#3 (permalink) Old 06-17-2013, 04:12 PM
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where do I get the 12v/earth from? external source?
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#4 (permalink) Old 06-17-2013, 04:35 PM
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Yep. Probably best to disconnect your car battery just to be super safe...................

Just realized, I drove past your way about 7 years ago when heading down to Richlands, south of Roanoke, nice part of the world. Lot of Scottish named places over there too........................

Whale oil beef hooked!

Last edited by dandywarhol; 06-17-2013 at 04:44 PM.
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#5 (permalink) Old 06-17-2013, 04:51 PM
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I just recently moved here in October 2012, some parts actually remind me a lot of the black forest in west Germany...
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#6 (permalink) Old 06-17-2013, 05:28 PM
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the by the book method is to remove the electrical plug from the clutch and apply a 12v source to it. this will cause it to engergise and then it wont spin and you can undo the 8mm bolt holding it.

its not a good idea to jam stuff in the rotors as you can scratch them or put excessive force on the bearings inside...

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#7 (permalink) Old 06-18-2013, 12:56 AM
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I must get a copy of the manual sometime. The cd I got with the car only works with Windows XP

Whale oil beef hooked!
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#8 (permalink) Old 06-18-2013, 10:49 AM
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The Bentley manual says to "use the old serpentine belt to hold the clutch and remove the 8mm bolt" (which I tried)
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#9 (permalink) Old 06-18-2013, 10:52 AM
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Originally Posted by Subby_ View Post
its not a good idea to jam stuff in the rotors as you can scratch them or put excessive force on the bearings inside...
Yes, I understand this. There is a german tutorial on how to fix it and per the instructions in that, the guy actually used the rubber handle of a hammer and stuffed it in the rotors to unscrewed the bolt. My reaction to reading that was and I was hoping there would be a more professional way of going about it.

Ok, so where can I get 12v of power then? and if I understand it correctly, the cylindrical power plug for the s/c has 4 pins, where would the connections go?
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#10 (permalink) Old 06-18-2013, 04:01 PM
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I'm sure there's only 2 wires in the barrel connector.

Remove the neg. battery terminal

Make up a (fused) wire to connect from the battery to the barrel plug.

Make an earth wire and connect it to the wire GOING to the s/c clutch with the brown through it - this is the earth terminal.

Connect the live fused wire to the other (I've forgotten it's colour) terminal GOING to the s/c clutch - the clutch should now activate.

Whale oil beef hooked!
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