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Old 02-23-2011, 09:29 PM
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Default Resolved - rear end loose metal sound, reverse rubbing, burning smell

I just got my '04 1500 back from the shop and wanted to let you know the symptoms & the finding. I've read a lot of posts with similar issues - hopefully this will help someone else diagnose a problem.

Loose "rock sound" from rear:
About a year ago, I noticed an intermittent sound coming from the rear end. The sound would come & go, last for several days or weeks and then disappear for several more. Louder than a 'rattle,' not quite a 'clank,' close to a hitch rattle or rock in the chrome wheel clad kind of sound, but it didn't seem to get faster or slower with speed. It seemed to "catch" and then clear.

Rubbing/grinding sound in reverse:
I would get a rubbing sound when backing up into the garage sometimes. It was hard to reproduce on a flat surface, but happened often when backing up an incline and turning (into the garage). It didn't sound/feel like gears, it was more like a bind or brake rub.

Rear end lockup:
Was backing into the garage after replacing a taillight bulb - thought I had backed over my toolbox. The whole truck came to a an abrupt grinding stop. This one got me thinking I had transmission problems in my very near future. Maybe I still do, but it only happened once.

Rear end rubbing sound & burning smell:
Pulled over on my way home yesterday thinking I had a flat tire. All 4 good, but there was a bad burning smell coming from the rear of the truck.


I've had my local Goodyear shop do a 60K maint at about the same time the issues started and have had it back to them twice for these symptoms, without any progress (note, they never charged me for the follow-up work, even though they had to refill the diff a 2nd time when they opened it up).

Finally, the burning smell yesterday (and another Goodyear shop for good measure) helped discover that the left rear parking brake pivot was seized and the pad had separated the shoe. The pad finally jammed just right to cause the burning smell.

I wasn't aware that the parking brake used a small drum and not the same reg brake discs. I'm hoping that the loose pad rolling around in the drum explains all the intermittent sounds, rubbing, and the one slow speed lockup. I'll post back if any new developments before the end of the month...when hopefully my new 2011 RAM Outdoorsman has arrived!
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Old 02-24-2011, 03:55 AM
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Default

IF your rear differential has drum brakes,
usually drum brakes have 2 pads, 1 is a longer one, that is for normal braking, the shorter one is for the emergency brake

both are held on mostly by springs
seems the guy that did your brakes, was not a qualified brake person
http://www.ehow.com/how_7360891_chan...dge-truck.html
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Old 02-25-2011, 02:13 AM
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Default Parking brake drum inside of disc brake rotor



Hoping this diagram from another forum clarifies (credit post from 06 RAM5.7). Rear brakes are disc brakes, rear parking brakes are drum brakes. The "drum" is inside of the rotor.

I don't believe you can see this without pulling the rotors - maybe someone will be able to confirm?
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