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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 10-07-2014, 12:02 AM   #1
330lover
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Turn clockwise to undo the electric fan clutch for automatic?

I am not able to undo the electric fan clutch. Should I turn clockwise or anti clockwise to undo the fan clutch?

I am in the process to replace the engine cover gasket, Vano seal and serpentine belt.
So I would need to remove the electric fan but couldn't. No matter how hard I turn closkwise, It wouldn't turn.
Applied some PB Blaster but still wouldn't turn.

LOL, I was able to undo the fan to replace the ac belt last time but not this time. Any idea appreciated!



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Last edited by 330lover; 10-07-2014 at 12:02 AM.
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Old 10-07-2014, 12:10 AM   #2
Stinger9
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Clockwise is to loosen here. Hopefully by now it has soaked long enough to be easier.
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Old 10-07-2014, 12:57 AM   #3
eneka
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you need to give her a couple of good hard pounds and she'll be easy afterwards.
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Old 10-07-2014, 01:52 AM   #4
BaliDawg
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Quote:
Originally Posted by eneka View Post
you need to give her a couple of good hard pounds and she'll be easy afterwards.
What he said. Oh, and the same for the fan nut. LOL

It is NOT an electric fan clutch. It is a viscous fan clutch.

It is a lefthanded thread, so turn clockwise to loosen it. Whack the wrench with a hammer to crack her loose. And don't over tighten it when you are done. The direction of spin keeps it from coming off anyway.
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Old 10-07-2014, 08:40 AM   #5
GDubois
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Also , put some antiseize on when you're done. Mine was on so tight I had to break the water pump pulley to remove it.
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The e46 M3 is by far the most boring and worst M3 that BMW has made to date.
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Old 10-07-2014, 10:22 AM   #6
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Yes, the reverse of lefty loosy, righty tighty.

The nut only needs to be torqued to a few inch pounds because the rotation of the engine is the direction to make the nut tighter. The whole point of the reverse thread is so the fan cannot become loose and spin off -- that would be a huge disaster if it happened. If your knuckles turn white, the nut is too tight.
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Old 10-07-2014, 11:04 AM   #7
seattle330
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If it's seriously stuck, get a water pump pulley tool before you bend all those bolts. I learned that lesson the hard way....
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Old 10-07-2014, 11:11 AM   #8
330Lover_
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Thank you for the advice, I will keep trying.
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Old 10-07-2014, 11:36 AM   #9
GDubois
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If it's seriously stuck, get a water pump pulley tool before you bend all those bolts. I learned that lesson the hard way....
In fact, if it's original it should be replaced anyway. Only like $25 for OEM.
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Old 10-07-2014, 11:43 AM   #10
jdstrickland
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He's got the right tools and is using them the right way. The reverse threaded nut is part of the viscous couple (fan clutch), which costs something like $90, not $25.
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Old 10-07-2014, 01:20 PM   #11
GDubois
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Originally Posted by jdstrickland View Post
He's got the right tools and is using them the right way. The reverse threaded nut is part of the viscous couple (fan clutch), which costs something like $90, not $25.
Sorry, I was referring to the water pump pulley.
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The e46 M3 is by far the most boring and worst M3 that BMW has made to date.

Last edited by GDubois; 10-07-2014 at 01:22 PM.
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Old 10-09-2014, 10:17 PM   #12
DEADF15H
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When hitting it with the hammer, your not knocking the fan wrench clockwise to loosen it. You hit the top of the wrench, driving down to the nut, to line up the kinetic force of the blow and break the threads loose first. Then turn the wrench clockwise to loosen.

As a side note, the Haynes Manual for my buddy's Ranger said his fan nut was left hand threaded like our BMW's, but the book was wrong. Took a 3 ft extension and a190 man to finally break it loose.

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