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Author Topic: can I replace the fan clutch without removing the  (Read 6588 times)

erickmarciano

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can I replace the fan clutch without removing the
« on: July 06, 2005, 10:22:50 »
can I replace the fan clutch without removing the rad?
if so do I remove the bolts from the puley or the fan?
thanks
Erick

1971 280sl
1962 VW
1954 Allstate vespa
1958 gs150 vespa
1962 gs160 vespa
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1994 E500 W124
1971 280sl
1989 Porsche 930 coupe
1988 e30 m3
2001 ducati mh900
2006 ps1000
1962 Vespa GS160

Naj ✝︎

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Re: can I replace the fan clutch without removing the
« Reply #1 on: July 06, 2005, 12:29:13 »
Yes [:p]
Slacken fan belt.
Remove the 4 special bolts (10mm spanner) coupling to w/pump pulley. May have to do in two stages - slacken all 4 bolts 1/2 way to make room to remove full length.
Remove coupling and fan together then swap over.

naj

65 230SL
68 280SL
« Last Edit: July 06, 2005, 12:31:07 by naj »
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68 280SL

Cees Klumper

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Re: can I replace the fan clutch without removing the
« Reply #2 on: July 06, 2005, 13:24:38 »
Word of caution - these 4 bolts can be really difficult to get loose. And they round off easily, so there's a potential problem. Better try them gently and, if tight, soak in penetrant before really applying force. Maybe someone else has some good tips on this one.

Cees ("Case") Klumper in Amsterdam
'69 white 280 SL automatic
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Cees Klumper
1969 Mercedes 280 SL automatic
1968 Ford Mustang 302 V8
1961 Alfa Romeo Giulietta Sprint Coupe 1600
1962 FIAT 1500S OSCA convertible
1972 Lancia Fulvia Coupe 1.3
1983 Porsche 944 2.5
1990 Ford Bronco II

erickmarciano

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Re: can I replace the fan clutch without removing the
« Reply #3 on: July 06, 2005, 13:32:40 »
THANKS i HAS A BIT OF TIME LAST NIGHT , SO i STARTED slacking the bolts and one of them got rounded out I has to remove with a visegrip

these bolts are special?


1971 280sl
1962 VW
1954 Allstate vespa
1958 gs150 vespa
1962 gs160 vespa
Logged
1994 E500 W124
1971 280sl
1989 Porsche 930 coupe
1988 e30 m3
2001 ducati mh900
2006 ps1000
1962 Vespa GS160

A Dalton

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Re: can I replace the fan clutch without removing the
« Reply #4 on: July 06, 2005, 18:07:51 »
I am a radiator remove guy , but if one does not like that route, you want to a least place a piece of heavy cardoard between the rad and your work.. I see guys ruin their own radiator with one slip.. just real easy to do.
 I guess you have an auto trans..
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erickmarciano

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Re: can I replace the fan clutch without removing the
« Reply #5 on: July 06, 2005, 18:50:29 »
no got a 4 sp , thanks for the cardboard trick

1971 280sl
1962 VW
1954 Allstate vespa
1958 gs150 vespa
1962 gs160 vespa
Logged
1994 E500 W124
1971 280sl
1989 Porsche 930 coupe
1988 e30 m3
2001 ducati mh900
2006 ps1000
1962 Vespa GS160

ja17

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Re: can I replace the fan clutch without removing the
« Reply #6 on: July 06, 2005, 21:50:54 »
Hello Erick,
It will be much less difficult if you car has no Factory AC. I use a long handle 10mm box end on the bolts it has never failed. You must use a high quality wrench which is thin enough to fit the box end onto the bolts. The Snap On wrench I use fits just fine. I suspect other good makes will also fit.

Loosen all four of the 10mm bolts and remove the fan and clutch together. You can loosen the radiator side  mounting bolts and move the radiator forward a bit if needed, the holes are sloted.

Yes the bolts are special with a small 10mm flange head. This diameter bolt would usually have a 13mm head.

These fan clutches are very pricey new. Six cylinder sedans of the era used the same clutch and fan blade!

To install start one of the 10mm bolts then slide the fan assembly in place, next start the other three 10mm bolts before tightening any of them down.

Joe Alexander
Blacklick, Ohio
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Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
1982 300TD Wagon turbo 4spd.
1963 404 Mercedes Unimog (Swedish Army)
1989 flu419 Mercedes Unimog (US Army)
1998 E430
1974 450SLC Rally
1965 220SE Finback

Ben

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Re: can I replace the fan clutch without removing the
« Reply #7 on: July 07, 2005, 04:06:20 »
Anyone advise what parts would be needed to convert a 230SL to viscous fan clutch ?

Could used parts be bought reasonably ?

Sorry to hijack the thread BTW !

Regards,
Ben in Ireland.
'64 230SL 4sp.
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n/a

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Re: can I replace the fan clutch without removing the
« Reply #8 on: July 07, 2005, 18:58:17 »
Ben

I changed to a viscous fan using parts from a 250 SL.  I imagine the fan unit is the same or similar to many of the sedan units.  

I bought a new 250 water pump as the 230 pump will not accomodate the viscous fan.  Also, the radiator of the 230 is about 2 inches narrower than the 250 and later radiators.  This means the fan blades will hit the metal that surrounds the air cleaner housing.  I remedied this by shortening the fan blades but you may look around and find a fan with shorter blades than the one I used.  

good luck

Iverson
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Ben

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Re: can I replace the fan clutch without removing the
« Reply #9 on: July 08, 2005, 03:18:13 »
Okay perfect !

Thanks for that !

That was exactly the info I needed to know !

Regards,
Ben

Regards,
Ben in Ireland.
'64 230SL 4sp.
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JimVillers

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Re: can I replace the fan clutch without removing the
« Reply #10 on: July 08, 2005, 12:02:33 »
I remove the radiator out the bottom.  It will drop right out with little effort.  It is far easier to remove the radiator than fight in limited spaces with the hood in the way.

Jim Villers
190SL, 230SL 5-Speed, 190E 2.3-16 Kompressor
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Jim Villers
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Naj ✝︎

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Re: can I replace the fan clutch without removing the
« Reply #11 on: July 08, 2005, 12:30:48 »
Erick,
What's wrong with the fan clutch?
Not enough cooling or...

naj

65 230SL
68 280SL
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68 280SL

A Dalton

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Re: can I replace the fan clutch without removing the
« Reply #12 on: July 08, 2005, 13:34:08 »
quote:
Originally posted by JimVillers

I remove the radiator out the bottom.  It will drop right out with little effort.  It is far easier to remove the radiator than fight in limited spaces with the hood in the way.

Jim Villers
190SL, 230SL 5-Speed, 190E 2.3-16 Kompressor


 Sure is , specially as it is a stick .
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erickmarciano

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Re: can I replace the fan clutch without removing the
« Reply #13 on: July 08, 2005, 16:10:49 »
just did it with good 10mm , took 15 min to remove with hood in place  did it in the intake side
thbnaks
for all your help

1971 280sl
1962 VW
1954 Allstate vespa
1958 gs150 vespa
1962 gs160 vespa
Logged
1994 E500 W124
1971 280sl
1989 Porsche 930 coupe
1988 e30 m3
2001 ducati mh900
2006 ps1000
1962 Vespa GS160
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