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  #11  
Old 02-18-2011, 03:01 PM
LineCutter LineCutter is offline
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Quote:
Originally Posted by RamTech View Post
I can understand your confusion. A lot of the old timers in my area refer to it as grease, presumably because it's so thick.
Yep.....I fit into that category.....differential lube will always be "grease" to me.

How much grease is the RRT suggesting should be added? So someone suggested that the overfill fix would be a temporary solution since the grease would blow out the vent once it heats up. Has anyone validated this yet? Has anyone heard what the longer term solution will be? I would presume this is an issue with every 2011 out there correct (the post December trucks are being delivered overfilled from the factory)? Why is it not an issue with 2009/2010?
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Old 02-18-2011, 03:32 PM
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the only answer I have is that a total of 19 ounces is being added. I haven't seen any of the '11 model in here to compare the two.
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Old 02-22-2011, 02:06 PM
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So just to satisfy my curiosity, if someone takes delivery on a ram 1500 built after Dec 31, remove the filler plug on the front right side of the rear diff and see if any grease runs out. Or if there is a dealer tech out there that has access to a newer build, please do the same. Thanks.
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Old 02-22-2011, 02:15 PM
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I'll do that if I get a chance, but we're not seeing many '11 models in the shop yet.
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Old 02-22-2011, 02:40 PM
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I get my factory ordered truck in April sometime, and I can go under and check my fluid level.

But whether there is new cover with a higher hole, or the diff is just over-filled, isn't the problem that there were some cheap chinese bearings installed in the diff? So while adding more fluid may band-aid it to some extent, it sounds like the real solution is a differently sourced (or engineered) bearing. I imagine the 2009-2010s are the same engineering but different (north american) parts supplier, but that's a guess.
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Old 02-22-2011, 06:53 PM
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I thought about getting a 90 degree elbow and a short nipple and installing it with the elbow turned up.This should give it the 13 oz. needed.......JB.
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Old 02-22-2011, 07:56 PM
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What is the date cut-off on that recall? I had mine in to the dealer today for a leaky transmission gasket and it did not come up as eligible for any recalls. Also checked the VIN online and it also came up empty. Presumably, any vehicle built in January is not on the list?

My build info:
Build Date (Warren, Mi): 01-11
MDH: 010318 (I believe this is 6:00pm 03-Jan-2011)

Want me to check something on the cover for the rear diff? Fill hole location, liquid level? If it warms up a bit outside I wouldn't mind looking into it.



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Old 02-23-2011, 09:52 AM
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Quote:
Originally Posted by LineCutter View Post
Yep.....I fit into that category.....differential lube will always be "grease" to me.

How much grease is the RRT suggesting should be added? So someone suggested that the overfill fix would be a temporary solution since the grease would blow out the vent once it heats up. Has anyone validated this yet? Has anyone heard what the longer term solution will be? I would presume this is an issue with every 2011 out there correct (the post December trucks are being delivered overfilled from the factory)? Why is it not an issue with 2009/2010?

I think you misunderstood the actual problem and my post about venting. The original problem was underfilling (below the fill hole) from the factory. To resolve this cheaply and easily X amount (I think ramtech said 19 oz) of lube is added to every recalled differential through the vent. If you were 19 oz low this would put you at the correct level. If you were less than 19 oz low you would end up with some overfill. If your differential was at the correct level already you would be 19 oz overfilled. Overfill will not harm the diff and the vent provides an exit for excess lube if needed. The goal is to get your lube to the correct level without pulling the plug on every truck vs being underfilled from the factory, not to have every diff overfilled. I don't believe post December trucks are overfilled, I think they are correctly filled and the pre December trucks were low. The 2009/10 trucks were properly filled from the factory before the problem causing underfilling arose.
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Old 02-23-2011, 10:16 AM
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hmmm.....I would think if they were not overfilling them, there would be no need to fill them through the vent on top.....simply remove the fill plug and top off the fluid level as one would normally fill a differential. The tech that I spoke with at the local dealer said that they were, in fact, overfilling the diff.
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Old 02-23-2011, 10:34 AM
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I can't find my source now, but when the recall was first released I read that the whole issue was less than the normal amount of lube being put in at the factory. As in some got none, others a little bit, and a few the correct amount. Based on this information, I believe the standardized quantity of lube added through the vent process was designed to save Chrysler time and money. If I can find the link I'll post it up.


This came from another forum and talks about a service bulletin instead of recall but I believe they are related.

"So I just got a call from the dodge service manager stating that I need to bring my truck in because of low fluid levels in the rear diff. .... He said it was sent this way from the factory... "

This is only for the 2011 Ram 1500's, it's an RRT#3-001-10 about adding additional rear differential and friction modifier. Hope this helps.

OVERVIEW:
This bulletin involves adding an additional 19 fluid oz. of rear axle lube and a 1 fluid oz. of
friction modifier to the rear differential.
MODELS:
2011 (DS) RAM 1500 Pick-up
2011 (DX) RAM TRUCK (Mexico)
NOTE: This Service Bulletin applies to vehicles equipped with a 3.55 rear axle or a
3.92 rear axle (Sales Code DMD or DMH) built before December 11, 2010
(MDH 1211XX).
DISCUSSION:
This Service Bulletin is being released as a preventative countermeasure to address an
axle durability condition.

Last edited by Al E. Gator; 02-23-2011 at 10:41 AM.
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