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Big Muddy rancher Rancher

Joined: 10 Feb 2005 Posts: 15724 Location: Big Muddy valley
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Posted: Sun Dec 17, 2006 10:09 am Post subject: Dodge? Cummins ? |
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Had an incident with my truck. A piece of the fan shroud must of flipped up and hit a fan blade bending it into the Rad.
Question is how does the fan clutch come off and what size wrench or special tools do you need?
It has not been a good week but nobody has been hurt so can be thatk ful for that.
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jigs Rancher

Joined: 17 Mar 2005 Posts: 6938 Location: KANSAS
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Posted: Sun Dec 17, 2006 10:56 am Post subject: |
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fastest way is a cutting torch....
isn't the shroud plastic? I can't see that bending a fan blade. I once had a stick hit the tire, flip up and beat the fan to hell.
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Big Muddy rancher Rancher

Joined: 10 Feb 2005 Posts: 15724 Location: Big Muddy valley
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Posted: Sun Dec 17, 2006 12:19 pm Post subject: |
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| Jigs,there is a piece of the shroud missing so i assumed that is what bent the blade. fairly heavy plastic. No matter i still need to get the clutch disconnected from the engine. . The clutch is fine so could be reused just need fan and rad.
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pknoeber Member

Joined: 06 Apr 2005 Posts: 93 Location: SW KS
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Posted: Sun Dec 17, 2006 1:46 pm Post subject: |
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10mm wrench will take the fan off the clutch. Not sure on the radiator, but it probably won't be bad at all. If you have another radiator ready, it should only take about an hour. I'd say to have a metric and SAE wrench set handy.
Good luck.
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JD6320 Member

Joined: 11 Feb 2005 Posts: 45 Location: Ontario
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Posted: Sun Dec 17, 2006 4:16 pm Post subject: |
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REMOVAL
CAUTION: If the viscous fan drive is replaced because of mechanical damage, the cooling fan blades should also be inspected. Inspect for fatigue cracks, loose blades, or loose rivets that could have resulted from excessive vibration. Replace fan blade assembly if any of these conditions are found. Also inspect water pump bearing and shaft assembly for any related damage due to a viscous fan drive malfunction.
Disconnect the battery negative cables.
Drain enough coolant to be able to remove the upper radiator hose.
Remove the upper radiator hose.
Remove the fan shroud mounting bolts. Position fan shroud towards engine.
CAUTION: Do not remove the fan pulley bolts. This pulley is under spring tension.
The thermal viscous fan drive/fan blade assembly is attached (threaded) to the fan hub shaft (Fan Blade/Viscous Fan Drive). Remove the fan blade/fan drive assembly from fan pulley by turning the mounting nut clockwise (as viewed from front). Threads on the viscous fan drive are LEFT-HAND. A Snap-On 36 MM Fan Wrench (number SP346 from Snap-On Cummins Diesel Tool Set number 2017DSP) can be used. Place a bar or screwdriver between the fan pulley bolts to prevent pulley from rotating.
Remove the fan shroud and the fan blade/viscous drive as an assembly from vehicle.
Remove fan blade-to-viscous fan drive mounting bolts.
Inspect the fan for cracks, loose rivets, loose or bent fan blades.
CAUTION: Some engines equipped with serpentine drive belts have reverse rotating fans and viscous fan drives. They are marked with the word REVERSE to designate their usage. Installation of the wrong fan or viscous fan drive can result in engine overheating
Tom
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Big Muddy rancher Rancher

Joined: 10 Feb 2005 Posts: 15724 Location: Big Muddy valley
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Posted: Sun Dec 17, 2006 11:22 pm Post subject: |
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Thanks Tom, It was the 36MM wrench that I was wondering about. I am pretty sure the clutch is OK but it has to come off to get the damaged fan off. It's to narrow to get a big Cresent wrench in there .
Thanks
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Soapweed Rancher

Joined: 11 Feb 2005 Posts: 12095 Location: northern Nebraska Sandhills
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Big Muddy rancher Rancher

Joined: 10 Feb 2005 Posts: 15724 Location: Big Muddy valley
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RoperAB Rancher

Joined: 11 Feb 2006 Posts: 1435 Location: Alberta
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Posted: Mon Dec 18, 2006 8:13 am Post subject: |
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| Rod <bull session> seems to be an expert on those cummings.
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Big Muddy rancher Rancher

Joined: 10 Feb 2005 Posts: 15724 Location: Big Muddy valley
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Posted: Mon Dec 18, 2006 10:28 pm Post subject: |
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| I got lucky with the rad. A rad shop in Williston fixed it in 2 hours for $50. Beat $400 for a new one. Still have to buy the $27 wrench to get fan off and the rest of the parts. Little bit of light at the end of the tunnel.
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cowsense Rancher

Joined: 10 Feb 2005 Posts: 1377 Location: Central Saskatchewan
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Big Muddy rancher Rancher

Joined: 10 Feb 2005 Posts: 15724 Location: Big Muddy valley
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