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DUTCH
Administrator Doppelgänger
Date registered: Apr 2006
Location: US, GA, Atlanta
Vehicle(s): 2015 Audi Q7 3.0 TDI,2018 Sprinter
Posts: 9963
| Coolant Fan Visco Clutch
My G500 has been running hotter than normal. I discovered that with the engine running fully warmed, and actually a bit hotter than normal, I can stop the coolant fan with my gloved hand.
Looks like I need a new visco clutch. MSRP US$510.00 plus labor, since I don't have the tools or time to do it. Ouch! |
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03-Gwagen
Elite Veteran
Date registered: Apr 2006
Location: Western Pennsylvania
Vehicle(s): CLK63 Black Series, 2018 G63, 2016 GLE300d
Posts: 888
| RE: Coolant Fan Visco Clutch
Hi Dutch,
Is it this one?
http://www.autohausaz.com/pn/2100037031
http://mb-teilekatalog.info/view_SubGroupAction.php?lang=E&mode=BM&...
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AGuess
Elite Veteran
Date registered: Apr 2006
Location: Holly Springs NC
Vehicle(s): 93 500GE, 93 500GE, 2002 G500
Posts: 717
| Re: Coolant Fan Visco Clutch
Hi Dutch,
Have you thought of Jonathan at Blue Ridge Mercedes. I understand that he rebuilt a clutch for another member who has a 500GE in Miami.
Hope life is good.
AGuess |
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DUTCH
Administrator Doppelgänger
Date registered: Apr 2006
Location: US, GA, Atlanta
Vehicle(s): 2015 Audi Q7 3.0 TDI,2018 Sprinter
Posts: 9963
| Re: Coolant Fan Visco Clutch
AGuess - 9/23/2017 8:54 PM
Hi Dutch,
Have you thought of Jonathan at Blue Ridge Mercedes. I understand that he rebuilt a clutch for another member who has a 500GE in Miami.
Hope life is good.
AGuess
Thanks. I'm not big on rebuilds. |
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DUTCH
Administrator Doppelgänger
Date registered: Apr 2006
Location: US, GA, Atlanta
Vehicle(s): 2015 Audi Q7 3.0 TDI,2018 Sprinter
Posts: 9963
| RE: Coolant Fan Visco Clutch
Yes. It looks like it. Unfortunately, I don't have the time or tools to do it myself. Thanks for the good idea, though. |
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jmr89
Date registered: Nov 2012
Location: France
Vehicle(s): Class G W463 320Cab V6 >>Ancien 230 GE Cab 1990
| Re: Coolant Fan Visco Clutch
voir ICI
http://www.benzworld.org/forums/w123-e-ce-d-cd-td/1422491-300d-1982... |
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DUTCH
Administrator Doppelgänger
Date registered: Apr 2006
Location: US, GA, Atlanta
Vehicle(s): 2015 Audi Q7 3.0 TDI,2018 Sprinter
Posts: 9963
| Update - RE: Coolant Fan Visco Clutch
This Sachs Visco Fan Clutch is a direct drop in plug and play replacement for the factory fan clutch at a fraction of the MB boxed replacement part price.
Fwiw, the factory clutch was also a Sachs clutch.
As another heads up, the KD Tools KDT3472 3 pc Fan Clutch Wrench Kit is the perfect tool for the job. It is far stronger than the MB tool, also at a fraction of the price. |
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Otiswesty
Administrator
Date registered: Jun 2007
Location: Portland, Oregon
Vehicle(s): 463.241, 461.213
Posts: 3006
| Re: Coolant Fan Visco Clutch
You could always just bend the tabs down for a short term fix |
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DUTCH
Administrator Doppelgänger
Date registered: Apr 2006
Location: US, GA, Atlanta
Vehicle(s): 2015 Audi Q7 3.0 TDI,2018 Sprinter
Posts: 9963
| Re: Coolant Fan Visco Clutch
otiswesty - 10/2/2017 6:38 PM
You could always just bend the tabs down for a short term fix
Requires dismounting the assembly and removal of the fan blade from the clutch for access. Might just as well replace it. |
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Braingears
Expert
Date registered: Apr 2006
Location: St Petersburg, FL
Vehicle(s): G320 & ML320
Posts: 1450
| RE: Coolant Fan Visco Clutch
I drilled and refilled mine years ago. Still working great, and a refill now takes 2 minutes (once removed from engine). |
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lgo20153
Member
Date registered: Aug 2016
Location: Chicago
Vehicle(s): G500
Posts: 16
| Re: Coolant Fan Visco Clutch
I just replaced mine recently.
Found one for $400 shipped (Original Sachs unit). The one in the truck seized up on me , running 10c hotter and making a high pitched whine above 4,000 RPM's. It is an easy replacement - Used a special wrench and all it needed was a good whack and the clutch fan bolt came loose without any issues
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DUTCH
Administrator Doppelgänger
Date registered: Apr 2006
Location: US, GA, Atlanta
Vehicle(s): 2015 Audi Q7 3.0 TDI,2018 Sprinter
Posts: 9963
| Re: Coolant Fan Visco Clutch
lgo20153 - 10/16/2017 11:27 AM
I just replaced mine recently.
Found one for $400 shipped (Original Sachs unit). The one in the truck seized up on me , running 10c hotter and making a high pitched whine above 4,000 RPM's. It is an easy replacement - Used a special wrench and all it needed was a good whack and the clutch fan bolt came loose without any issues
Ouch! Mine was $272 delivered. It, too, is a Sachs. |
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lgo20153
Member
Date registered: Aug 2016
Location: Chicago
Vehicle(s): G500
Posts: 16
| Re: Coolant Fan Visco Clutch
I lied, mine was the same price but I ordered some other small parts, totaling $400.
After a few weeks after install into the "hotter" Fall season, temps are steady! |
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ychung
Veteran
Date registered: Aug 2015
Location: SO CAL
Vehicle(s): 2004 G500, 2014 ML350, 2008 S550
Posts: 196
| RE: Coolant Fan Visco Clutch
Hi,
I've just bought the new fan clutch by Sachs, but it has some sort of corrosion in the middle section.
Is this the norm or do I need a replacement?
Also, does anyone have the fan clutch replacement instruction or is it going be self explanatory?
Thank you
 (IMG_2461.JPG)
Attachments
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 IMG_2461.JPG (142KB - 0 downloads)
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DUTCH
Administrator Doppelgänger
Date registered: Apr 2006
Location: US, GA, Atlanta
Vehicle(s): 2015 Audi Q7 3.0 TDI,2018 Sprinter
Posts: 9963
| RE: Coolant Fan Visco Clutch
ychung - 10/25/2017 2:34 PM
Hi,
I've just bought the new fan clutch by Sachs, but it has some sort of corrosion in the middle section.
Is this the norm or do I need a replacement?
Also, does anyone have the fan clutch replacement instruction or is it going be self explanatory?
Thank you
The corrosion is normal. You will need the tool mentioned previously in this thread to make the job easy. |
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ychung
Veteran
Date registered: Aug 2015
Location: SO CAL
Vehicle(s): 2004 G500, 2014 ML350, 2008 S550
Posts: 196
| RE: Coolant Fan Visco Clutch
Thank you, Dutch |
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Inkblotz
Expert
Date registered: Apr 2006
Location: Georgia
Vehicle(s): 90 300GD "Thundering Turtle II", w/ 603A turbo
Posts: 3186
| Re: Coolant Fan Visco Clutch
Be aware that all fan clutches need to be stored vertically not horizontally. I am told by the manufacturer that if stored horizontally (lying down) for any length of time they become unusable. |
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DUTCH
Administrator Doppelgänger
Date registered: Apr 2006
Location: US, GA, Atlanta
Vehicle(s): 2015 Audi Q7 3.0 TDI,2018 Sprinter
Posts: 9963
| Re: Coolant Fan Visco Clutch
Inkblotz - 10/28/2017 8:54 AM
Be aware that all fan clutches need to be stored vertically not horizontally. I am told by the manufacturer that if stored horizontally (lying down) for any length of time they become unusable.
If that be the case, the manufacturer (Sachs/ZF) needs to be educated to ship them that way. My recently installed Sachs visco fan came shipped direct from ZF (the parent company) horizontally in the box; and I'd be willing to bet that it was stored on their warehouse shelf in that position, too. |
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DUTCH
Administrator Doppelgänger
Date registered: Apr 2006
Location: US, GA, Atlanta
Vehicle(s): 2015 Audi Q7 3.0 TDI,2018 Sprinter
Posts: 9963
| Instructions
Attached
Attachments
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Remove_install viscous fan clutch.pdf (81KB - 11 downloads)
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kerry460
Elite Veteran
Date registered: Apr 2006
Location: tasmania australia
Vehicle(s): 1984 300GD LWB WAGEN
Posts: 611
| RE: Coolant Fan Visco Clutch
G,,day .
my knowledge is horizontal is ok .
as long as the front is uppermost .
front being as installed in vehicle .
kerry |
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