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Viscous fan removal...Help!

Posted: Fri Mar 30, 2007 5:43 pm
by mfw898y
Hi all,
I have been given an electric fan to try and sort the overheating probs in traffic. I have managed to get the plastic blades off the viscous fan but can't get the midddle bit off the shaft. It just spins independently of everything else. I've removed a coil type spring from the middle thinking it would reveal something but nothing. Does anyone know how to get it off so I just have the pulley left to drive water pump?

Posted: Fri Mar 30, 2007 5:48 pm
by Coops
there should be like a large nut to undo while locking the viscous up some how

Posted: Fri Mar 30, 2007 6:05 pm
by mfw898y
Thanx for the quick reply!
There is a nut behind the viscous bit but it seems i need 2 pairs of hands to stop everything turning. The missus will go mad when she see's all the oily hand prints on the laptop :lol:

Posted: Fri Mar 30, 2007 6:22 pm
by Coops
not sure how they come off on the ford,
but you should be able to loch the pulley some how and un do the nut, if im correct its a left handed thread too,

Posted: Fri Mar 30, 2007 6:37 pm
by mfw898y
I've tried the normal way and it wont budge. Gonna try left hand in morning

Posted: Sun Apr 01, 2007 9:24 pm
by spookie
Hi, it is a left handed thread. You will need a thin spanner to fit the nut behind the unit. I think the last time I did one I held the viscous coupling by wedging a large screwdriver against the bolt heads/threads.

Posted: Fri Apr 06, 2007 12:45 pm
by mfw898y
Managed to get it off :D . ended up clamping the pulley with mole grips. (it also helped no end knowing it was left hand thread :wink: cheers peeps)Put the metro fan in top left hand corner of rad and boy does it shift some air. Strangely though, concidering it moves 10 times more air than the viscous fan, it will only hold the temp at what it was when you switch it on. It can't actually lower the temp. Interesting experiment though, you just have to keep a close eye on the gauge.

Posted: Sat Apr 07, 2007 9:00 pm
by spookie
Hi, if you still get cooling problems check your radiator. I had a rad that although seemed ok, was partially blocked. New radiator made a whole load of differance.

Posted: Mon Apr 09, 2007 9:31 am
by mfw898y
That will be next move i think