69 300 rear noise

[jmustian]

I need some thoughts. I have the sure grip 8 3/4, 2.76 rear. On the road I have a noise from the rear of car. Jacked up and running in low, I have no noise. I put a pipe on the diff and the axle bearing housing and it all sounds smooth with no clicks or roughness.
I tried listening on turns and seems louder, by very little, on the right axle than left.
I pulled the wheel and drum and end play is snug but a question is, should there be play when turning axle front to back. I estimate and 1/8" play. Any suggestions helpful. Otherwise I'm pulling the right axle and putting new bearings on it. Thanks

 

[NY69]

Usually the wining noise of a wheel bearing starting to fail, wiil be noticeable at certain speeds. And in some cases gets louder when cornering.
When the sound is coming from your dif, I would assume it is noticeable at all speeds.

 

[CBODY67]

If it's a rear wheel bearing, when you load that side of the car, as in swaying it side to side, the noise will be louder when loaded and quieter when unloaded.

If you're going to do one bearing, might as well pull the other axle shaft out and LUBE that side too. Then also put new lube in the whole situation, with ltd slip additive (no matter what the lube container says).

Just some thoughts,
CBODY67

 

[jmustian]

Usually the wining noise of a wheel bearing starting to fail, wiil be noticeable at certain speeds. And in some cases gets louder when cornering.
When the sound is coming from your dif, I would assume it is noticeable at all speeds.

The noise is constant at any speed.

 

[Big_John]

I'm betting it's axle bearings.

More noise when cornering and no noise when no weight points to that.

Do yourself a favor and change both. It's hard to tell which one is bad by sound, and chances are the other bearing is going to fail. Buy the good Timken bearings too.

 

[jmustian]

My thoughts too. Thanks all.

 

[Snotty]

Would be a good time to go with Green Bearings. My passenger side bearing failed on my Newport. I made the switch with no regrets.

 

[jmustian]

Ok. Another problem. There is a large axle seal that fits into the axle housing and I have plenty of them.
There is a smaller seal in the flange plate within the adjuster.
The FSM says these are both the same. However I have both in my hand that I took out and they are not.
The number on the inner seal matches the FSM number for the outer seal. No other numbers are listed for the adjuster seal unless I'm reading something wrong. There is another number listed but it appears to be for the 7 1/4 rear. Anyone have info on this adjuster seal?

 

[Big_John]

Ok. Another problem. There is a large axle seal that fits into the axle housing and I have plenty of them.
There is a smaller seal in the flange plate within the adjuster.
The FSM says these are both the same. However I have both in my hand that I took out and they are not.
The number on the inner seal matches the FSM number for the outer seal. No other numbers are listed for the adjuster seal unless I'm reading something wrong. There is another number listed but it appears to be for the 7 1/4 rear. Anyone have info on this adjuster seal?

Timken #8704S for the outer seal and #8695S for the inner.

Lot's of guys just buy the package from Dr. Diff. Mopar Set 7 (A7) Tapered Axle Bearing Package

I've bought the separate bits and pieces because I'm cheap, but it really only saves a couple bucks. But I am that cheap...

 

[jmustian]

Cool. I have all the stuff except that inner seal but just found 2 on eBay.

 

[twostick]

Would be a good time to go with Green Bearings. My passenger side bearing failed on my Newport. I made the switch with no regrets.

I'm impressed!!! Over 24 hours and nobody has gone off on a Green bearings are dangerous tangent... lol

Kevin

 

[jmustian]

I'm impressed!!! Over 24 hours and nobody has gone off on a Green bearings are dangerous tangent... lol

Kevin

Not sure what they are but got some Timkins

 

[twostick]

Not sure what they are but got some Timkins

Green bearings are the sealed units, no adjusting required.

Kevin