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post #91 of 106 (permalink) Old 05-09-2019, 11:41 AM
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Left coast posted a pic awhile back showing the relation of the center part if the tensioner to illustrate if it's toast. If it's pointing the wrong way , looking from the back, the rubber has given up. They also often fail if tension is relived after years of being "sprung".


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post #92 of 106 (permalink) Old 05-09-2019, 11:52 AM Thread Starter
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Left coast posted a pic awhile back showing the relation of the center part if the tensioner to illustrate if it's toast. If it's pointing the wrong way , looking from the back, the rubber has given up. They also often fail if tension is relived after years of being "sprung".
I suspect it is beat even though it looks ok. It probably would have been fine if the car continued to run but sitting did not do it any good.
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post #93 of 106 (permalink) Old 05-09-2019, 11:58 AM Thread Starter
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Iím heading off to pick up the valve cover! You can see that underneath all of the pealing paint, the cover was pitted pretty badly in some areas but I think it looks a million times better now. These pics are from the powdercoater:





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post #94 of 106 (permalink) Old 05-10-2019, 05:37 AM Thread Starter
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This morning I cleaned all the rust off the PS pulley and water pump pulley and gave them a fresh coat of flat black. I also cleaned up and sprayed the metal three-legged bracket that the tensioner attaches to.
The valve cover looks amazing considering itís age and Mg makeup.

Today is turn the key day!!!!





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post #95 of 106 (permalink) Old 05-13-2019, 07:44 AM Thread Starter
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We are back in business! First things first, I wanted you guys to see the new tensioner assembly from Febi. I was nervous about having to choose this brand, but Iím happy with how it turned out. The part was made in Germany and has INA bearings which makes me comfortable with the quality of the part.


Getting that side of the block cleaned up and getting the pulley back in went nicely. The little plastic pointer thing that helps set the tension even went back in successfully.

But, before that all went back together, I got the valve cover back on, filled that sucker with oil and fired it up!!! It cranked the first time without any drama. Once I knew it was going to be ok, I spent a while getting the tensioner, pulleys and belt installed. Then I worked on the fan, shroud and the rest of the little bits. First test drive was so awesome. Obviously, the brakes were extremely violent for the first few miles, but after a while they started to smooth out. I am still planning on installing the new rotors I have anyway.
I've got a DMV appointment Thursday, and insurance on it beginning today. This thing will be officially back on the road in no time!


And here it is after it had been driven and was fully warmed up. It is super smooth and nice and quiet.


The black valve cover looks so good with everything all clean and buttoned up!
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post #96 of 106 (permalink) Old 05-13-2019, 07:56 AM
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We are back in business! First things first, I wanted you guys to see the new tensioner assembly from Febi. I was nervous about having to choose this brand, but I’m happy with how it turned out. The part was made in Germany and has INA bearings which makes me comfortable with the quality of the part.
Nice to hear it fired up! Febi doesn't make anything, they are a reboxer... sometimes they rebox OEM parts, sometimes they rebox junk. What you received may be a good part, possibly OEM. The fact it has INA (OEM) bearings is a good sign.


But just because it's made in Germany, don't assume it's OK. See below, from back in 2014...


My new-to-me S124 wagon had a record of the M104 fan bearing bracket being replaced by a shop a few years ago. The receipt shows the shop charged the previous owner full MB dealer retail at the time for the bracket ($278)... but they installed a Febi bracket instead. The Febi bracket failed in 4 years / 38kmi, the bearing was loose in the casting and allowed the pulley to move forward/aft 2-3mm.

The Febi bracket was made in Germany, btw... no Chinese stuff here. Apparently Febi can't even make quality stuff in Germany! It is also sad that a shop would charge a customer dealer retail, and then install a part which they probably paid 1/3 as much for. As a bonus, the shop did not install it correctly, they did not use anaerobic sealant on the bolts during installation as specified in the FSM. This caused an oil leak. *sigh*

On a side note, the Febi bracket would not allow the pulley locking tool (round rod) to insert properly, the casting was not lined up with the hole in the flange. Since there are no name-brand brackets available via aftermarket, I shelled out for the OE bracket from the dealer. On the OE bracket, the pulley lock tool fits perfectly! After cleaning everything and installing with the proper sealant on the bolts, the leak is gone.

Photos at this link, scroll down to "fan".
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post #97 of 106 (permalink) Old 05-13-2019, 08:32 AM Thread Starter
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Nice to hear it fired up! Febi doesn't make anything, they are a reboxer... sometimes they rebox OEM parts, sometimes they rebox junk. What you received may be a good part, possibly OEM. The fact it has INA (OEM) bearings is a good sign.

But just because it's made in Germany, don't assume it's OK. See below, from back in 2014...
I wasn't assuming anything. I was just happy to see some clear signs that it could be a decent part based on the bearings.
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post #98 of 106 (permalink) Old 05-13-2019, 08:41 AM Thread Starter
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After a thorough soapy power washing at the local car wash, I am very encouraged by how well the old beast cleaned up. At 20 feet, the car looks pretty darn good still.
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post #99 of 106 (permalink) Old 05-14-2019, 12:44 PM
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Nice work! The quality and comparative simplicity of the w124 makes them worth it.


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post #100 of 106 (permalink) Old 05-14-2019, 06:01 PM
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Woo hoo!!!! Congratulations!!! You must be happy! I'm certainly happy for you. It's got to be good to get your baby back.

I'm also glad you posted pictures of the whole car as I was getting curious. It does look good in the photos. I've always liked red Benzes. I currently own a '99 C280 Sport, but passed up the opportunity to buy a red one when I was looking for mine in the summer of 2017. Mine's black (very black) what with a black exterior and black interior, and since it's the sport version, all the normally wooden bits are (fake) carbon fiber. So black, black, black. I'd love to have a red one, but when shopping used, mechanicals and overall condition trump color. Sigh.

Anyway, congrats again. Maybe you can make a driving video and post that?

Cheers,

Kim G
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Where we are very thankful that all our head gaskets are still doing their job.
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