I just put a new fan clutch in my 1992 300D 2.5 Turbo (has a OM602.962 engine). I followed the instructions at
R&R of Viscous Coupled Fan, Serpentine Belt Replacement W210 E300D

Those instructions are for a E300D, but basically they are the same and very helpful, with the following caveats and tips.

1. You don't need a special tool to lock the waterpump flywheel so you can tighten the fan bolt on. A small hex Allen key (is that what they're called in the US?) fits in the hole just fine.

2. There is a lot more space with the 300D than there is for the car in the instructions above, so a shortened 8mm socket is not needed.

3. I found it easiest to undo the 3 bolts holding the fan on the clutch and take the fan out. Lots more space to get in there. Not sure it helps massively overall, but if you're having trouble getting in there and getting it done, consider removing the fan, it's easy.

4. Get the 606 fan clutch - much cheaper than the 602 fan and is the same, as far as anybody can tell - fits straight onto the 602 and has the same engagement temperature. I got mine for less than $80 with delivery on ebay.

While you're in there, you may as well replace the serpentine belt. It's easy. The only thing that takes a little thinking is getting the belt tightening system figured out. What you do is undo the nut holding the spring on. Then use a lever to release the tension (there's a hold in the black plastic mount that allows you to do this easily) and take the spring off. Then it is easy to put the new belt on and put the spiring back.

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1983 240D Silver/Blue "Sadie", unknown miles. 100k miles on WVO single tank, converted to 2 tank about 10k miles ago, FPHE, Injector Heaters, Aux Fuel pump. Alcohol/Water injection. Frantz oil bypass filter
1992 300D 2.5 Turbo Green/Tan "Jade" 267K miles Stock.
1992 300D 2.5 tan/tan "Rocky" on 2 tank WVO. Pressure actuated Turbo "rat's nest" surgery completed. 197k miles

First reply to this 2 year old thread. Funny since it looks to be so helpful. Maybe there are not a lot of 124.128 owners here?

Did the OEM metal fan work with the 603 fan clutch you used? Somewhere else I read you would have to use the plastic fan with this clutch, which would defeat the cost savings advantages.

Oh, one other thing, do you have the clutch part number and manufacturer handy?

Thanks pdraton!

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1993 W124 300D 2.5L Turbo, OM602.962
2000 Chevrolet Cavalier, 2.4L DOHC
2002 Ford Explorer, 4.0L SOHC
2005 Toyota Prius, 1.5L

http://www.fuelly.com/sig-us/40601.png

Mine was ACM from All Parts Express and cost $98.48. OM606 clutch part # 606 200 01 22

I think the price may have changed in the last month. At that price I suspect it may have been manufactured in China, but it didn't say so on the part.

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1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


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