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Torque Specifications for most Makes and Models
Reminds me of the '93 Mitsubishi Spyders that had warped brake rotors that happened before a tightening sequence was discovered.
Joel you're a man in the know; I need a relatively inexpensive replacement for the viscous fan drive on my '03 Ram with a H.O. Cummins. Borg-Warner makes it for Chrysler and lists at nearly $500. Open to suggestions.
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Torque Specifications for most Makes and Models
I need to look closer but mine which was onnly uiused in '03 is a thermo-controlled viscous fan--no wires but I'll check. '04 uses the electric clutch so I'm wonderin if I could find one (which I've had no luck so far) and retrofit. I'll get the VIN later today.
I can spin it by hand (didn't count), but more disconerting is the sound it makes--like crunching nuts and bolts like a garbage disposer. This is my assessment based on me taking the drive belt off, checking the lower tensioner and pulley, and the removing the top idler and lubing it, checking water pump, power steering, alt.
At idle I can stop the fan by hand (did it carefully) and rotate it backward.
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Torque Specifications for most Makes and Models
Frank: I've had the opposite happen where the air supply was bad and the air impact didn't tighten the nuts and the wheel nearly came off driving.
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Torque Specifications for most Makes and Models
When I wrote service manuals the drafts were to be approved by the release engineer. We had a feeling the engineers weren't even reading them so we writers put in torque specs that went: Tighten until it breaks then backoff 1/4 turn. (Not)Amazingly they got approved!
Joel, what or how do those colored dumbells work I see at tire shops for torquing wheel nuts? Are they reliable?
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Torque Specifications for most Makes and Models
Joel, here's my VIN: 3D7KU28C73G793021
I called the dealer and he ran the VIN and said the clutch is electric. I looked pretty well and found no evidence of an electric clutch which would have be to be on the engine and resisted by a some sort of bracket. No wires around this area nor through the front of the fan. The drive pulley feels to be hollow--no coil or anything behind or inside the pulley resembling a clutch.
Here's the stack-up order looking front the front: Fan, then a black, thin metal, cupped "cereal-bowl" looking bezel affair that appears to capture/hold/cup/surround the aluminum-finned viscous clutch, then the pulley drive shaft. This is different than some fan drives in that the clutch is what you see first from the front, then the fan, then the drive pulley.
None of the Dodge web sites that sell parts show an accurate picture of the clutch---electric or otherwise.
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Torque Specifications for most Makes and Models
Joel, yes AC and the snow plow prep package, with automatic and 4x4. Trailer tow package too.
The belt is the original with (yikes) 94,000 miles on it. The belt was never really removed when I did the pulleys--I simply relieved the tensioner, lifted the belt off/away and left it in place. Fan spins counterclockwise facing it. I did come across something on the Net about '03's made before Jan.' 03 had a different fan clutch---but I'm not sure I read it right NOR do I know the build date (which is encoded in the VIN?). Today was fairly cold in the mid-20's when I started the engine. It sat overnite, so I tried to spin the fan by hand before starting it. The fan had some resistance and would only spin maybe half- to three-quarter turn. However when I started and idled it for about 3 minutes I could see the fan slowing down even though engine RPMs were stable. It wasn't as noisey with all the crunching sounds when it's warmed up.
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Torque Specifications for most Makes and Models
Thanks Joel.
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Torque Specifications for most Makes and Models
Murf, yes please ask you employee about his set up.
Flex-a-lite has a system they want over $500 using two fans.
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Torque Specifications for most Makes and Models
I did see that 18,000 GCVW was the advertised max for the electric fans across the board.
I didn't do a lot of research on the flexfans though but need to.
A direct-couple is available for Fords using the old fan I saw. A direct fan uses a purported 20-30 HP right off the top, and 2-3 MPG.
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Torque Specifications for most Makes and Models
Thanks for the input--that is my next step before a new one.
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Torque Specifications for most Makes and Models
Or, "I've never been wrong. Okay, once, but I was just mistaken"
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Gas Generator Weather Protecti
01-06-2009, 23:39 
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