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TR6 Noise at Rear Axle - TR-6

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davidk

davidk

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I have a noise that sounds like a stick (or something) caught under the car. It seems to speed up or slow down with vehicle speed. It sounds like it's coming from the area of the drivers rear tire. It doesn't do it all the time, and there doesn't seem to be any consistency to when it happens. I pulled the drums, and everything is in place as it should be. I thought it might be in the differential, so I pulled the cover, and although there's some slack, everything was okay in the differential. The differential was tight on it's mounts, but I did find something else there and will do another post on it. The u-joints and half shafts seem to turn smoothly (disconnected from the differential). Anyone have any thoughts on what the noise may be?
 
David,

Have you checked the inner & outer u-joints to make sure that they are greased properly? Sounds like you are getting a dry one or two.

Don't forget the driveshaft joints while you're under there.
 
U-joints all were good. Did find the axle splines dry on the noisy side. Greased both sides. Hopefully this was the source of the noise. I did notice that the yoke on the noisy side is not sealed, and the other side is. Which way is correct? Here's a picture of the yoke that is sealed on the end:
DSC_0070.jpg
 
Update: After pulling the diff out, and not finding any obvious source of the noise (intermittent, changed with road speed), went for a drive and the noise was still there. Couldn't tell the source, other than on the left side.

Pulled the front tire, found the source of the noise:

DSC_0193a.jpg


Not Timken, but that's what's going back in. After seeing the bearing, it's amazing it was only making noise occasionally. Four of the roller bearings were split.
 
Mmm, crunchy !!

From what I've read, the factory seems to have mixed vented/unvented yokes more or less at random. Seems to me that a small vent hole might be better, as otherwise the air movement as the suspension moves (which forces the volume inside the yoke to go up and down as the splines move in and out) will tend to force grease out of the splines. The other danger is getting too much grease in there, which will keep the splines from sliding until the grease gets worked out through the splines (or pops the cover off).

But I could be wrong so YMMV and all that.
 
Tdskip, didn't keep up with the time, but not too long. I did have a problem with a couple of the mounts that needed to be repaired anyway.
 
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