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  #1  
Old 02-17-2011, 02:45 PM
LineCutter LineCutter is offline
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Default Rear Diff Recall #10V656000

Found you guys when doing some research for my next truck. Considering a new Ram QC 1500 Laramie as one candidate. I did a search on this site for the following, but couldn't find the answers, so.......I noticed that 1 of the 2011 recalls is for a potential rear bearing failure for 2011 build between Oct - mid-Dec 2010 (see recall # above). Talked to a Ram service manager and he said the "fix" for those trucks is to over-fill the rear differential with grease by adding it to the vent in the top of the diff!

Questions:

- What happens down the road when someone doing service on the truck "didn't get the memo" and fills the diff to the bottom of the inspection hole like we have done since the beginning of time?

- Do the trucks that have been built since mid-December 2010 have a new rear diff casting with a higher location for the fill hole (front right on rear diff), or are they just over filling the diff with grease from the factory or has there been some other fix?

Thanks
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Old 02-17-2011, 11:01 PM
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Nobody?

I suppose a person could crawl under the fresh-off-the-transport rams being delivered and see if the fill holes are located in the same spot, and if they are, remove the plug to see if grease runs out. ??????????

Or might there be a tech/engineer on the board here that could shed some light?
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Old 02-18-2011, 12:18 AM
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Although it's an RRT and not a recall, what the manager told you is right.
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Old 02-18-2011, 08:14 AM
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Grease? I thought the problem was underfilling on the assembly line and dealers were just topping them up to the normal level with 80W-90 gear lube.
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Old 02-18-2011, 09:09 AM
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Al, some people refer to gear oil as grease but gear oil is what gets put in.
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Old 02-18-2011, 09:29 AM
wjsamx wjsamx is offline
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One can park on a steep hill or driveway to fill "level" with the hole. I've done that in the past to over-fill.

I would think it's very difficult to add 90W through the vent hole.
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Old 02-18-2011, 09:31 AM
m3ziggy m3ziggy is offline
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Default

I spoke with a friend who worked at *cough* GM and she said this happens the odd time on the line. It doesn't get filled to the right level.

My question is, why are they topping it up through the vent hole. I thought you fill through the inspection bolt/hole and top it up to the bottom of that hole.
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Old 02-18-2011, 09:52 AM
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Quote:
Originally Posted by m3ziggy View Post
I spoke with a friend who worked at *cough* GM and she said this happens the odd time on the line. It doesn't get filled to the right level.

My question is, why are they topping it up through the vent hole. I thought you fill through the inspection bolt/hole and top it up to the bottom of that hole.

Filling through the vent hole takes less time. Any overfill is probably blown back out the vent when your differential heats up driving down the highway. I doubt anyone who's diff was filled this way has lube very much above the fill level after driving a few hundred miles.
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Old 02-18-2011, 09:54 AM
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Quote:
Originally Posted by RamTech View Post
Al, some people refer to gear oil as grease but gear oil is what gets put in.

Thanks Ramtech, to me grease is grease and oil is oil so I was confused. I was picturing a diff packed full of semi-solid grease.
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Old 02-18-2011, 10:11 AM
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Quote:
Originally Posted by Al E. Gator View Post
Thanks Ramtech, to me grease is grease and oil is oil so I was confused. I was picturing a diff packed full of semi-solid grease.
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.
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