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Old January 8th, 2014, 08:17 AM   #1
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Default AAM 9.25 pinion bearing question

My front pinion loosened up on my 2003 Ram 2500HD 4x4. It is a diesel, not that it matters.

I pulled the dif. cover to inspect the damage and everything "looks" ok. I am thinking about just replacing the outer bearing and seal? I am pretty much a noobie once inside of an axle.

Please advise.

Thanks

EDIT = It is not a D60, it is an AAM 9.25
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Old January 8th, 2014, 08:28 AM   #2
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all original gears?
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Old January 8th, 2014, 08:39 AM   #3
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Yes, original with allot of miles on them, but they do not look damaged. Of course they do not get used much being the front axle.
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Old January 9th, 2014, 10:52 AM   #4
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just change it out I had the problem on my 01 mine did it from plowing and a heavy foot
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Old January 9th, 2014, 10:56 AM   #5
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just change it out I had the problem on my 01 mine did it from plowing and a heavy foot
yah I would just start here. it should be fine
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Old January 10th, 2014, 09:21 AM   #6
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just change it out I had the problem on my 01 mine did it from plowing and a heavy foot
Changed what out? Just the outer bearing, or pulled the carrier and replaced both bearings? I know pulling the carrier is the correct way, but hope to get away without doing that.

Any other advise?
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Old January 10th, 2014, 09:37 AM   #7
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outer bearing and seal red Loctite is your friend new nut is good to or stick the old one in a press, I have found the nut backs off and fucks the bearing if not caught
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Old January 10th, 2014, 09:38 AM   #8
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Check the bearing race while checking the bearing.
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Old January 10th, 2014, 09:45 AM   #9
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outer bearing and seal red Loctite is your friend new nut is good to or stick the old one in a press, I have found the nut backs off and fucks the bearing if not caught
Thanks. I recently discovered I should have replaced the nut. What do you do by putting it in a press? Never heard of that. Will probably just use some loctite.

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Check the bearing race while checking the bearing.
Thanks. I ordered a race incase it is bad, any idea how hard it is to pull?

Thanks everyone, much apreciated!!!
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Old January 10th, 2014, 10:19 AM   #10
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With the pinion installed, pretty challenging I bet.
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Old January 10th, 2014, 10:44 AM   #11
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With the pinion installed, pretty challenging I bet.
I would think so
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Old January 10th, 2014, 11:42 AM   #12
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That's what I figured.
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Old January 13th, 2014, 10:16 AM   #13
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Well, no such luck. Pulled the the pinion nut, removed the yoke and everything inside was in rough shape. Ended up having to rip it all the way down to make sure the inner bearing is good.

Now it is easy to set the tension, just allot more time r&r'ing all the parts.

On a good note, the wheel bearings actually came out relatively easy.
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Old January 28th, 2014, 01:45 PM   #14
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Still working on this. Went to put it together and the pinion is bent. Now looking for a good place to purchase new gears.
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Old January 28th, 2014, 01:57 PM   #15
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Still working on this. Went to put it together and the pinion is bent. Now looking for a good place to purchase new gears.
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Old January 28th, 2014, 03:15 PM   #16
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Definitely use complete offroad. They had everything I needed for my regear/spool and the price was damn good.
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Old April 6th, 2014, 10:32 PM   #17
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This project has been a nightmare!!!

It has been tough to get every part, 3 weeks to find inner seals FML. Ended up weller truck parts had what I needed. They had a used set of gears, so I said WTH, I will try that.

Fast forward to this weekend and I was trying to put it together and low and behold, this pinion gear is bent.

QUESTION:

I am trying to be sure that there is nothing I could be doing wrong....

We replaced inner and outer bearing and races (shim checked to make sure they were seated all the way in.

To install the the inner bearing, we cooled the shaft (freezer) and put the bearing on my kerosene heater. The bearing literally fell on.

We installed the pinion with a new crush sleeve and set it to the proper torque. We used a pipe wrench on the yoke against the frame to hold the pinion while tightening (wow, it is hella tight to crush the sleeve).

Once we did all of this, the runout in the pinion can be seen by eye (.05 plus runout) on the end of the shaft.


My next move is to contact weller and layout the pinion to see where it is bent etc... I am hoping they will give me credit towards a new set of gears........

I would like to drive my truck this year. Thanks for reading my book.
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Old April 6th, 2014, 10:37 PM   #18
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Once the crush starts to crush it goes quick. I usually put the sleeve in a press to get the initial movement. Then finish crushing in the axle.
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Old April 6th, 2014, 11:11 PM   #19
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maybe I have had a few to many but wasn't the gear set in good shape that came out ? for the run out are you sure its not the bearing or race? crush sleeves suck have you looked for a sleeve and shims? much easier to work with and it will never loose preload.
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Old April 7th, 2014, 08:01 AM   #20
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Quote:
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Once the crush starts to crush it goes quick. I usually put the sleeve in a press to get the initial movement. Then finish crushing in the axle.
We were very careful not to go to far with the sleeve. It had to crush a fair amount before it was even close. A press to get it close is a good idea.

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maybe I have had a few to many but wasn't the gear set in good shape that came out ? for the run out are you sure its not the bearing or race? crush sleeves suck have you looked for a sleeve and shims? much easier to work with and it will never loose preload.
Correct, the originals looked good, until we put the pinion in. Once installed, we could see that the pinion was bent badly (much worse than the one just installed). A spacer and shims would be cool, but the crush sleeve "seems" pretty straight forward and easy to use.

Thanks guys for your help. This project has me at whits end.....
Any more thoughts?
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