Can't get my fan shroud on... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

crakarjax · 05-20-2010, 01:58 PM

I left my fan shroud off when I had my water pump off and figured that I would put it on later... now I can't see how it would be possible to install with the radiator in! Is it possible? I have a flex fan and it's about 2" from the radiator, while the shroud is about 6" deep.

junkyardjohn · 05-20-2010, 02:34 PM

YOU HAVE TO PULL THE FAN ASSY.

JOHN

johnechi · 05-20-2010, 02:55 PM

Yup, like John said. Pull the fan/fan clutch assembly from the water pump pulley (assuming you've loosened the alternator belt) Put the fan shroud onto the radiator loosely, then mount the fan/fan clutch assembly back onto the water pump pulley. Its a little tight getting the bolts back on but doable. Then readjust and tighten alternator belt and tighten screws on fan shroud.

mdwilf · 05-20-2010, 03:58 PM

I may be wrong, but I think your fan may to too close to the radiator. It's supposed to be hanging out the back (eng side) of the shroud to be it's most efficient.

crakarjax · 05-20-2010, 04:01 PM

You could be right, its a flex fan so apparently not stock. There is a spacer between the fan and the water pump; I wonder if I can get a new spacer and bolts? In any case, does it really matter? I did notice that my temps are around the cold side of the stock temp gauge but that's with the shroud off... It might make matters worse when I shroud it. Thanks for the tips guys, it was unclear how I would bolt the fan back on afterinstalling the shroud but it's pretty clear now.

mclairmo · 05-20-2010, 05:19 PM

Fan blades should be half way in and half way out of the shroud for best efficiency and as close to the edge of the shroud as possible without rubbing. However, if the engine kept cool as is, then it clearly is not critical in your case.

05-20-2010, 01:58 PM	#1
crakarjax Registered User Join Date: Dec 2009 Location: Kirkland, WA Posts: 1,302	Can't get my fan shroud on... I left my fan shroud off when I had my water pump off and figured that I would put it on later... now I can't see how it would be possible to install with the radiator in! Is it possible? I have a flex fan and it's about 2" from the radiator, while the shroud is about 6" deep. __________________ 1968 LWB C20 / AC / Wood Bed

05-20-2010, 02:34 PM	#2
junkyardjohn Registered User Join Date: Aug 2001 Location: SOMERSET KY. Posts: 6,427	Re: Can't get my fan shroud on... YOU HAVE TO PULL THE FAN ASSY. JOHN __________________ junkyardjohn 69 1 TON TOW TRUCK // 84 4WD CUCV BLAZER// 85 1 TON 4WD STAKE TRUCK// 86 M1031 5/4 TON 4WD CUCV// ALOT OF OLD TRUCKS FOR ONE OLD MAN TO DRIVE. THERES ROOM FOR ALL OF GODS CREATURES RIGHT NEXT TO MY MASHED POTATOES// LIFE MEMBER OF P.E.T.A (PEOPLE EATING TASTY ANIMALS) DON'T RENT U-HAUL ALWAYS TELL THE TRUTH IT WILL AMAZE PART OF THE PEOPLE & ASTONISH THE REST

05-20-2010, 02:55 PM	#3
johnechi Registered User Join Date: Jun 2009 Location: Hesperia, CA Posts: 159	Re: Can't get my fan shroud on... Yup, like John said. Pull the fan/fan clutch assembly from the water pump pulley (assuming you've loosened the alternator belt) Put the fan shroud onto the radiator loosely, then mount the fan/fan clutch assembly back onto the water pump pulley. Its a little tight getting the bolts back on but doable. Then readjust and tighten alternator belt and tighten screws on fan shroud.

05-20-2010, 03:58 PM	#4
mdwilf Registered User Join Date: Feb 2009 Location: Jefferson City, MO Posts: 83	Re: Can't get my fan shroud on... I may be wrong, but I think your fan may to too close to the radiator. It's supposed to be hanging out the back (eng side) of the shroud to be it's most efficient. __________________ What I do in my spare time: http://rosebudsgarage.shutterfly.com

05-20-2010, 04:01 PM	#5
crakarjax Registered User Join Date: Dec 2009 Location: Kirkland, WA Posts: 1,302	Re: Can't get my fan shroud on... You could be right, its a flex fan so apparently not stock. There is a spacer between the fan and the water pump; I wonder if I can get a new spacer and bolts? In any case, does it really matter? I did notice that my temps are around the cold side of the stock temp gauge but that's with the shroud off... It might make matters worse when I shroud it. Thanks for the tips guys, it was unclear how I would bolt the fan back on afterinstalling the shroud but it's pretty clear now. __________________ 1968 LWB C20 / AC / Wood Bed Last edited by crakarjax; 05-20-2010 at 04:02 PM.

05-20-2010, 05:19 PM	#6
mclairmo Registered User Join Date: Jan 2006 Location: Take Off Posts: 1,908	Re: Can't get my fan shroud on... Fan blades should be half way in and half way out of the shroud for best efficiency and as close to the edge of the shroud as possible without rubbing. However, if the engine kept cool as is, then it clearly is not critical in your case.



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