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1985 500 SEC, 2005 E320
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Discussion Starter #1 (Edited)
What can I expect to pay for a fan clutch for my SEC? I'm getting prices on the net for $207 USD. seems a bit on the high side to me. seems mine wont engage and the fan is turning way too slow. wouldnt even have noticed it until i had to jump someone's car this morning. or maybe if anyone has one lieing around they want to sell me for a fair price, i'd consider it. Funds are a bit tight right now after buying the 2005 E320.
 

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That's actually not bad. I paid $310 when I bought one from Jono recently for my SEL. Yes, it does sound high I know, but it is what it is.
 

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Discussion Starter #4
That's actually not bad. I paid $310 when I bought one from Jono recently for my SEL. Yes, it does sound high I know, but it is what it is.
k thanks. I figured I'd check before purchasing.
 

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I have been warned about what brand to buy though. I had a friend who bought a certain brand (can't remember which one right now) and installed it and it was junk, had to switch to another, I think Sachs? Jonathan would know, he sold me the same one.
 

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I took a hint from another automotive forum and refilled my clutch. Some manufacturers have servicing ports, or ways to open them up to refill the fluid. (I bought an extra one at a junkyard for $5 to experiment with to test my theory).

I went to a local hobby store and bought a couple of bottles of 6000 C.S.T. radio controlled car differential oil (which is pure silicone oil like that in our fan clutch). The hobby store guy called it OFNA fluid- I don't know what that stands for, but that's what you need. You can also buy fan clutch silicone refills at Toyota dealerships, but it will cost ~ $15 a bottle vs. $6. You can buy different weights but around 6000-7000 cst. fluid is kind of the middle of the range.

Step one- clean clutch externally and drill a small hole in clutch

Step two- let drain overnight if there is remaining fluid in it, or to speed up the process put it in a 200 degree oven and let it drain more quickly

Step three- I put one container ~ 55ML of fluid into clutch- I used a hobby syringe to inject it

Last step- Plug hole with relatively short self-tapping screw. I cleaned the hole and put epoxy on the threads before screwing it in to help. Let epoxy cure overnight and then install in car.

So far so good- its been about a month- no leaks and it went from dead to working. Once outside temperatures warm up this spring, I may put another ounce or so of fluid in it to see what effect it has, but you don't want to fill it completely up.

I wish mine would be able to be taken apart like some of the Toyota ones to avoid the self tapping screw, but we'll see how well this works.

Kind of a fun experiment, if it doesn't end up working out in a few months it only cost me a few dollars and I'm not current driving around in heavy traffic in 100 degree weather to risk anything.

Just a thought if you want to try it!
 

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2021 SL770
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What can I expect to pay for a fan clutch for my SEC? I'm getting prices on the net for $207 USD. seems a bit on the high side to me.
You and me both...
 

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80 280SL, 85 300SD, 87 300TD, 90 300TE 4Matic, 90 300D 2.5 Turbo, 92 300D 2.5 Turbo, 92 300TE 4Mat
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Refill it yourself. I've done it without any problems,it just takes a little time. I used the Toyota fluid (part numbers are in link).

Here are some instructions: Cooling Fan Clutch Rehab
 

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'87 560SEC: '86 AMG 560SEC: '87 560SEL - PAST: Heckflosse 190 & 230S
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Also... saw a couple used on Fleabay - @ $80+ shipping
 

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I'll only run Sachs units, the last few Behrs were China...Bah.

I'd make the switch to electric were it my car.

jonathan
 

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Topaz, DP, URO, Autostar, all are sold on Fleabay ranging from 28 - 100+ USD. I do not see Sachs, or any other brands I recognise
A fluid coupled clutch is not that high tech and the Chinese should be able to build one but, it is Chinese......................
Bye or By?

I need to buy online as in Thailand and finding a good one here is not easy.
If a Bye, then is there a good on-line source?
 

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1986/1990 W126
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Unfortunately lots of problems with cheap ones. But, you may get lucky and the cheap ones can be very cheap.
 

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Cheap is my concern,
The one on the car now is Behr, and I understand Sachs are good. Any recommends for other good brands, and where to buy online?
 

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2008 E350 110k, 2000 E320 143k, 1983 380SEC 240k
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A Koolman from Amazon for less than $30 has lasted three years on my SEC and is still going. Another for my W210 lasted a month. Got a refund and bought another Chinese knock-off, which lasted until I sold it. I say they are worth taking a chance.

Interestingly, the W126 failed by refusing to disengage, while the W210 did the opposite.
 

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Unfortunately I am not rich enough to afford to buy cheap goods. By the time I import a cheap one at 50% duty and VAT, risk damage to my expensive engine in this hot climate, then import another, I should have bought a good one in the first place.
BTW it has already been refilled by the PO's "mechanic"

What are the quality brands?
 

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1991 500SEC sub 50K mi. 1987 560SEC Now 150K mi. 2018
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By the time I import a cheap one at 50% duty and VAT, risk damage to my expensive engine in this hot climate, then import another, I should have bought a good one in the first place.
I totally understand & appreciate your logic there.

I have trusted both Hella & Behr for many years and within the last year obtained a replacement.
Reading the 'fine print' on the box, I hope the quality control standards are up to the German standards.

MBL

IMG_5018.JPG
 

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1977 W116 450SEL and 1988 W126 560SEC
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MBL, I did the same... I don't see it as much of a risk, being that Behr/Hella QC will apply. It would be interesting to know who is the current OE supplier for MB and where are their products coming from.

I will share an interesting experience. Wiper blades! My daily drivers used the Bosch Edge (or whatever they call the all rubber contour blades) for a long time. The OEM blades would last 2 years if I'm lucky, in the Canadian climate. I tried many replacements, including non-OEM Bosch (made in different EU countries), Valeo made in EU and other brands. None last more than a year before they start streaking and making horrible noises. Went back to the dealership, got the Bosch and voila! 2 years! But in January of 2018 I was in a pinch and had to buy aftermarket, my local supplier only had Bosch aftermarket and to "sweeten" the deal, they were made in China. Reluctantly I bought them, installed them on the car and guess what? I still have the car and the Chinese Bosch blades and in a month it will be 2 years.
 
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