Rockwell pinion bearing help please

[dodge6bt]

OK I noticed today that my front drive safe had some up and down movement. Took if off. Took the front of the flange on the axle to look at the bearing it looks good but the bearing race was about to fall out of the axle. Does the race have to be pressed in the axel or does the flange hold it tight.

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[rustystud]

A little confused here. Are you talking about the front differential axles ? Or are you talking about the "pinion" shaft bearings on the differential ? A picture would go a long way in helping diagnose the problem.

 

[M543A2]

I agree with rustystud, a picture would go a long ways toward helping us give you some help. Right off from your description I would say no races should just fall out.

 

[dodge6bt]

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[dodge6bt]

It's the race behind the front diff were the drive shaft comes in

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[gringeltaube]

........ it looks good but the bearing race was about to fall out of the axle. Does the race have to be pressed in the axel or does the flange hold it tight.....

From factory it's a snug fit in the best case, and the cup (#29521) may have spun already, inside the housing. So, yes it could fall out, after that ("flange")retainer (#8757660) was removed.

The retainer only keeps the cup in place but does not prevent the same from spinning. So take a closer look where it comes to rest (arrow in picture, below). I've found retainers with quite a groove worn-in, from the cup working loose, which then obviously contributes to that excessive play.
(Of course, that can be compensated by reducing the total shim-pack thickness, accordingly.)


G.

 

[dodge6bt]

I have taken some shims out and it has helped a lot.a slight bit of movement up and down but no were near what it was before. If I take shims out of the front will it help tighten it up also.

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[dodge6bt]

Will tightening up the pinion nut up also help ?

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[Jeepsinker]

No, that won't help. The shims are all that will affect it.

 

[gringeltaube]

Be careful when taking shims out at the rear side; those are the ones which set the pinion depth! Better adjust to zero play (or very slight preload) by reducing shims at the front side! That, if both bearings are found to be OK, of course!

No, the pinion nut(s ) have no influence, in this case. Just tighten to min. 300 ft-lb and a little more to just fit the cotter pin.

 

[dodge6bt]

OK I got a lot of play out of the system the front had like 20 shims I put the original back in the back and took some out of the front. the shaft spins freely and no up and down movement. Still going to do bearings soon tho.

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[gringeltaube]

Glad you got it fixed for now.


G.

 

[dodge6bt]

Took it on a trip and now the transfer case is leaking and hot I mean really hot

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[Jeepsinker]

Drain it and look for pieces of metal and bearings. If you don't find anything alarming, refill it with fresh gear oil and run it.

 

[dodge6bt]

Well I have a 50 mile trip back hopefully it will hold

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