Replace clutch fan with electric fan.

1961-1968: a.k.a "Finnie" or "Heckflosse" models
190, 190D, 200, 200D, 220b, 220Sb, 220SEb, 230, 230S, 250SE coupe, 280SE coupe, 280SE 3.5 coupe, 220SEb cabrio., 250SE conv., 280SE cabrio., 280SE 3.5 Cabrio., 300SE, 300SE coupe, 300SE conv., 300SEL
Post Reply
Thanh89
C Class
Posts: 25
Joined: Mon 24 Sep, 2012 4:28 am
Model you own: w111
Location: Melbourne, Reservoir.

Replace clutch fan with electric fan.

Post by Thanh89 » Wed 11 Feb, 2015 4:12 pm

Just wondering if anyone has replaced their clutch fan with an electric fan instead?
Fan needs replacing because I keep overheating in traffic.
Cheers
1966 W111 230S
1989 C124 300ce

User avatar
Bartman4800
300 SLR
Posts: 1985
Joined: Fri 10 Oct, 2008 12:10 am
Model you own: w111
Location: Perth WA

Re: Replace clutch fan with electric fan.

Post by Bartman4800 » Wed 11 Feb, 2015 4:22 pm

To my knowledge a 230S does not have a clutch fan. The fan is directly mounted to the water pump.

But I guess it has a fan from a W108 or other.

I worked for a guy in Sydney who drilled a small hole in the body and refilled it with viscous oil....


Bart
1963 220 Sb Sedan "Kermit" (Australian Assembly)
1960 220 Sb Sedan "Zum Schlachten" (Early German Assembly, with a torsion bar spring for the bonnet) - Stored in Country WA
1981 Subaru Brumby 1.8 with Weber and 5-speed box "little utie" - Sold to another enthusiast!
2006 Ford Focus "daily driver"
2002 VW Passat V6 30V Station Wagon (SOLD - This car into a money pit)
2011 Kia Sportage "Missus commuter Bus"
2002 Mitsubishi Rosa Bus (converting it to a motor home)

Thanh89
C Class
Posts: 25
Joined: Mon 24 Sep, 2012 4:28 am
Model you own: w111
Location: Melbourne, Reservoir.

Re: Replace clutch fan with electric fan.

Post by Thanh89 » Wed 11 Feb, 2015 4:55 pm

I'm not 100% sure what it had but I've attached a photo of it along with some numbers.
Cheers
You do not have the required permissions to view the files attached to this post.
1966 W111 230S
1989 C124 300ce

User avatar
Bartman4800
300 SLR
Posts: 1985
Joined: Fri 10 Oct, 2008 12:10 am
Model you own: w111
Location: Perth WA

Re: Replace clutch fan with electric fan.

Post by Bartman4800 » Wed 11 Feb, 2015 5:50 pm

Hard to tell from the side, need a shot at the centre of the fan.

But my initial hunch is a fixed fan as per standard.

Overheating could be caused by other factors too:

-Blocked radiator (external or internal)
-Leaking hoses
-Jammed thermostat
-Leaking water pump
-Slipping fan belt (usually audible)

Is it overheating while driving or only in stop start traffic?

Bart
1963 220 Sb Sedan "Kermit" (Australian Assembly)
1960 220 Sb Sedan "Zum Schlachten" (Early German Assembly, with a torsion bar spring for the bonnet) - Stored in Country WA
1981 Subaru Brumby 1.8 with Weber and 5-speed box "little utie" - Sold to another enthusiast!
2006 Ford Focus "daily driver"
2002 VW Passat V6 30V Station Wagon (SOLD - This car into a money pit)
2011 Kia Sportage "Missus commuter Bus"
2002 Mitsubishi Rosa Bus (converting it to a motor home)

Thanh89
C Class
Posts: 25
Joined: Mon 24 Sep, 2012 4:28 am
Model you own: w111
Location: Melbourne, Reservoir.

Re: Replace clutch fan with electric fan.

Post by Thanh89 » Wed 11 Feb, 2015 6:18 pm

Only ever overheats in traffic, anything over 40km/h temp stays normal. Shouldn't be any blockages in the radiator as that has just been replaced, as have all the associated hosing.
You do not have the required permissions to view the files attached to this post.
1966 W111 230S
1989 C124 300ce

User avatar
sf0999
250s
Posts: 255
Joined: Sun 30 Aug, 2009 8:40 pm
Model you own: w111
Location: Windsor, Sydney

Re: Replace clutch fan with electric fan.

Post by sf0999 » Wed 11 Feb, 2015 8:16 pm

My Finnie gets warm in Sydney summer traffic and it has had all hoses done, heater cores, radiator core along with a motor rebuild. Many older cars will overheat at low speeds, and idle. I have fitted a electric thermofan to mine, with a sensor in the thermostat housing that activates at 85c as well as a switch on the dash that I can activate at any time. I did not take off the original fan as it is fundamentally more reliable. If a thermofan does not work, there is a high risk damage is done by the time you notice. Hence I run the 2 fans. This does mean that my thermofan is in front of the radiator and pushes air through which is less efficient, but I think the safety of both systems worthwhile.

And as proof of theory -just by co-incidence, my W126 was getting a bit hot in traffic today, and when I checked the fan this afternoon it was not coming on -yet to diagnose the issue.

Steve
W111 1961 220S Classic Rally Car "Eugen"
W126 1988 300SEL "Frankie"

User avatar
Mercmad
Mercedes Demigod
Posts: 8061
Joined: Sun 11 Sep, 2005 8:01 pm
Model you own: w109
Location: Brissy
Contact:

Re: Replace clutch fan with electric fan.

Post by Mercmad » Thu 12 Feb, 2015 8:39 am

That has a fan clutch. i can see it in your pics. Replace that and all should be good. Also,when refitting the radiator,get it as close as 13mm from the radiator . Make sure there is a sponge gasket along the top and bottom edge of the radiator so the fan sucks air through the radiator and not around it.

Post Reply

Return to “W110, W111, W112 Sedans, Coupes and Cabriolets.”