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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E46 (1999 - 2006)

E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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  #1  
Old 10-06-2013, 09:04 AM
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halltristan halltristan is offline
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How can I clean the Fan clutch

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Pretty dirty. How do I clean it? What can I safely use?


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  #2  
Old 10-06-2013, 09:12 AM
RivMcLean RivMcLean is offline
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Mein Auto: 2004 330Ci, 87 Toyota PU
Be careful with the fan itself as it is pretty delicate, examine it for nicks and cracks, they will fly apart taking other components with it. I used 409 to clean the fan and I used a dry parts brush to loosen the dirt on the clutch itself. Mine was leaking so I just ended up replacing it.
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Old 10-06-2013, 09:15 AM
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halltristan halltristan is offline
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How can I clean the Fan clutch

Can it get wet?


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  #4  
Old 10-06-2013, 09:19 AM
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halltristan halltristan is offline
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How can I clean the Fan clutch

Also the nut on the clutch is pretty tight. It has resistance when I turn it. Is that normal?


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  #5  
Old 10-06-2013, 09:39 AM
RivMcLean RivMcLean is offline
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You could hose it off I guess, but I wouldn't soak it. I have a compressor to blow it off dry when done. Resistance is normal, as the engine warms up the fluid in the clutch warms up as well and spins more freely using airflow for cooling.
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  #6  
Old 10-07-2013, 08:10 AM
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Scott ZHP Scott ZHP is offline
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If it's covered in grunge, I cant help but wonder if its leaking.
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Old 10-07-2013, 10:10 AM
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charlesberry charlesberry is offline
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I've used Simple Green - which didn't do much, and went on to brake cleaner - which worked pretty well.
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  #8  
Old 10-08-2013, 06:07 AM
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G. P. Burdell G. P. Burdell is offline
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Quote:
Originally Posted by Scott ZHP View Post
If it's covered in grunge, I cant help but wonder if its leaking.
This. My car's original fan clutch was just as grungy, and barely engaging at all, after about five or six years of service. I replaced it along with the plastic fan blade.
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  #9  
Old 10-08-2013, 06:51 AM
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halltristan halltristan is offline
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Quote:
Originally Posted by G. P. Burdell View Post
This. My car's original fan clutch was just as grungy, and barely engaging at all, after about five or six years of service. I replaced it along with the plastic fan blade.
I'm not sold on it leaking just yet. It runs fine. But what could all the crud be? Road dust?
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Old 10-08-2013, 08:08 AM
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G. P. Burdell G. P. Burdell is offline
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Quote:
Originally Posted by halltristan View Post
I'm not sold on it leaking just yet. It runs fine. But what could all the crud be? Road dust?
I think it's road crud stuck to a thin film of viscous fluid from inside the fan clutch.
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