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Old 06-21-2019, 11:45 AM   #1
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Aux. fan failure and repair

I had an auxiliary fan on the front of the radiator of my 2002 Winnebago Sightseer. The odd thing - the motor would run but the blades did not turn. It turns out the cross pin on the shaft which looks like this 't' (red arrow) sheared from age. I assume... There did not seem to be any direct replacements. (I was looking for a complete assembly)

I did find about a dozen similarly sized both on eBay and Amazon. I have better luck with Amazon if I have issues. $40. got me a new fan. I used a couple of brackets off the old fan, made spacers to get a similar position. I was going to use the connector from the old fan but simply used push/pull connectors. Wire ties secure the bottom and make a safety for the top. I could not use the poke-thru-the-fins method that came with the new fan.

And, it all works fine. I probably wasted more time looking for OEM that it took to rig this one.

As an aside, I am not fearful of no-name fans from Amazon. I put a 12" fan in the side of a 40' shipping container, about 3yrs ago. I use a 12v battery with a charger attached and it runs 24/7.

Jim
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Old 06-21-2019, 11:56 AM   #2
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Nice fix. Love the neat wiring. Mine has a similar fan that was added by Previous Owner, but it somewhere along the line, got wired backwards. Fixed it and the wiring mess at the same time. Mine is controlled manually.

Terry
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Old 06-21-2019, 01:28 PM   #3
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Just replaced mine last year....


Only required a new motor. Used preexisting fan and cage. On the P30 series the fan will come on in (2) diff instances:


1. AC reaches ~225psi The AC on does not mean it will cycle immediately on the pressure must reach ~ 225psi



or


2. Coolant temp is approximately 221F (measured via the coolant temp sender in the passenger side head.)
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Old 06-22-2019, 01:47 AM   #4
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Those cooling fins are looking mighty clogged.

Did you guys clean them while you had the fan off?
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Old 06-22-2019, 12:35 PM   #5
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Actually, Arch... What you are seeing on mine are bits of exposed aluminum fin in a natural or salt corroded state. The airway is pretty clear.

My mechanic pulled a relay and used a paper clip to confirm that I had wired it 'pusher' rather than 'puller' ...and then packed it with refrigerant with dye to check for leaks. (we'll see...)

________


udw... I thought about doing 'motor only' after I got the new fan. 6 of one/half dozen of the other. 'Just happy I have another problem solved.

Thanks guys, Jim
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Old 06-22-2019, 06:32 PM   #6
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Aftermarket fans work fine as long as the cfm of air movement is same or greater than the stock unit. Just because the fan is same diameter does not mean blade design is equal
Tom
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Old 06-22-2019, 06:33 PM   #7
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Quote:
Originally Posted by Arch Hoagland View Post
Those cooling fins are looking mighty clogged.

Did you guys clean them while you had the fan off?

If my shot, the pic was taken unsteady (slight blur). It's very clean and combed with fin comb.



Used 2 cans of evaporator cleaner on it and the radiator as well.
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Old 06-23-2019, 12:31 AM   #8
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Going to clean my fins as best as I can with the fans mounted this next week. Planning on using Dawn dish soap.
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Old 06-23-2019, 08:38 AM   #9
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I ordered two fans last yr, after one of my two fans died.
Were a direct replacement as far as I can tell 80 watts at
12 volts. Made in china, but at $25 dollars for 2 what the
hay. Been working fine for 3 K miles. I did have to swap
in the old Delphi connector.....coopcolt
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