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Old 05-29-2013, 08:05 PM
mikeramlar01 mikeramlar01 is offline
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Join Date: May 2013
Location: Los Angeles
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Vehicle: 2001 Dodge Ram 1500
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Engine: 1994-2001 318ci (5.2L) Magnum V8 220hp
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Default Differential repair problem (pinion nut)

Hello, This is my first post and I'm hoping someone here can help me or guide in the right direction. I started hearing a whining from the differential almost like the sound of aggressive tire tread when accelerating and decelerating. I checked the differential fluid and it was low took just a little over 3/4 a quart to bring it to level. I've since disconnected the drive shaft, removed the differential cover and pulled both axles out of their shafts. I had to order a "bearing preload tool" today to insert into the axle shaft and release the carrier so that i can inspect its bearings as well as the pinion bearings which i'm hoping are damaged and will fix the problem. My reason for the post is that when i removed the pinion nut i did not mark it or count the turns it took to remove it.... ive read that over tightening it can damage the bearings because the preload is not set properly and can imagine that under tightening it will not be good either. Is there a specific torque or way to set the preload to the manufacturers specs? (the differential is a 9.25)
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Old 02-11-2014, 11:18 PM
montrese04 montrese04 is offline
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Location: Undecided, Indinana by way of Atlanta, Ga
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Vehicle: 99 Ram 1500 4WD w/5.9
Trim Level: dont know maybe ST
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Engine: 1998-2001 360ci (5.9L) Magnum V8 245hp(standard), 250hp(Sport package)
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hey mike did you ever find out the answer to your question? I've ran into the same problem and could surely use a definitive answer.
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Old 02-14-2014, 11:18 AM
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DaSOB DaSOB is offline
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Vehicle: 1998 Dodge Ram Ext Cab
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I've had the same problem, and wound up having to have the pinion bearing replaced - I'm on my third or fourth one. The repair shop says that this is an endemic problem with the Dodge Ram rear end, and even though they (repair shop) have made efforts with Chrysler to get the problem addressed, Chrysler swears that there is nothing wrong. According to the shop foreman (whom I now know on a first-name basis), the exact same bearing in Chevy and Ford trucks performs perfectly. It's some kind of design flaw in the Dodge rear end that causes it.

I can't answer your question about the torque on the retaining nut, but I can say that in my experience, there's no real cure for the bearing problem aside from replacing the rear end.
Ah Luv Muh Truck!!
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Old 08-15-2014, 10:06 PM
O M Jeep O M Jeep is offline
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Join Date: Aug 2014
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Vehicle: 01 Dodge 1500
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I see this is an older thread, I'm having the same problem maybe, I have this noise when deceleratiing, maybe you guys can tell me if this is the same noise and if the pinion bearing replacement fixed it.

01 Dodge 1500 Magnum rear end deceleration noise - YouTube
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