Rear wheel bearing? - 99 Suburban C2500

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Pinger

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JWOK said:
Don’t forget the heavy right foot and one-legged burnouts. We have probably all been there.
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What adds to my perplexity is that I'm gentle with it off the line and it's only done around 45,000 miles and as far as I can make out, previous owners were pretty sympathetic. I do corner pretty hard on tarmac though (but not beyond what AT tyres can offer as grip) hence not wanting to lose a wheel!

Would a reasonable course of action for me to pursue be to replace the cross shaft and C- clips and check the half shafts for wear while I'm doing it. Do the C-clips and pins wear before the half shafts do?
 
92GMCK2500

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Pinger said:
Would a reasonable course of action for me to pursue be to replace the cross shaft and C- clips and check the half shafts for wear while I'm doing it. Do the C-clips and pins wear before the half shafts do?
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Sounds like good insurance. You could check the play before you close everyhing back up again. Depending on results, the next step would be getting some slightly thicker C clips made up as Supercharged111 has done. That's pretty far though. I think Supercharged111 was referring to his race car in that instance....

Check the axle (half) shalfs for straightness while your at it.

If your going that far I would suggest wheel bearings & seals. This won't affect axle play but your going to have the diff open & drained anyways so its something to consider.
 
Schurkey

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Pinger said:
Would a reasonable course of action for me to pursue be to replace the cross shaft and C- clips and check the half shafts for wear while I'm doing it. Do the C-clips and pins wear before the half shafts do?
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INSPECT the cross-shaft, C-clips, and axle shafts. Replace as needed.

My experience is that the axle shafts outlast the clips and cross-shaft; but check the axle shafts anyway. Most of the wear on the cross-shaft is from the spinning spider gears.

And if that doesn't fix it...I bet you need new clutches in the Gov-Lock.

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Poorly-posed; but the wear marks from the spinning spider gears on the bottom edge are visible...if you look hard enough. Wear marks from the axle shafts are very slight, nearly impossible to see in these two photos.
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Continued below.
 
Schurkey

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Look for wear on the bearing surface of the axle shaft. No wear...don't bother installing new bearings. New seals may be a good idea, though.

Bearing and seal areas polished with emery cloth--180 grit. Finer is better.
Pretty good: Polished from the seal lip, but not "worn".
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Less-good. Beginnings of brinelling from bearing rollers.
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A nearly-perfect axle shaft that I couldn't get to stop seeping grease.
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Schurkey

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I don't know. Never tried it. So all I can say is "Probably".

No doubt "special tools" are needed, along with Heavy Duty "Assembler Fluid". (Not "assembly" fluid. I'm talking Adult Beverages.)

Seems to me that there's a "special" C-clamp looking tool, for Gov-Lock "bushings" or some such. The service manual would tell all.

By all means, let us know...'Cause I probably need to do the same with my 9.5".
 
Pinger

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Schurkey said:
I don't know. Never tried it. So all I can say is "Probably".

No doubt "special tools" are needed, along with Heavy Duty "Assembler Fluid". (Not "assembly" fluid. I'm talking Adult Beverages.)

Seems to me that there's a "special" C-clamp looking tool, for Gov-Lock "bushings" or some such. The service manual would tell all.

By all means, let us know...'Cause I probably need to do the same with my 9.5".
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Trying to avoid the accompanying expletives that are required to fully convey the extent to which I do not want to rebuild a G80.
 
Pinger

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Does a G80 have a cross shaft.
In the video here ( 2 mins in) there's talk of a 'reaction block'.

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Pinger said:
Trying to avoid the accompanying expletives that are required to fully convey the extent to which I do not want to rebuild a G80.
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It has been years since I had one apart other than for gears/bearings, so memory is a little fuzzy. I do remember the governor shafts/bushings being a pain to remove, cue expletives. There is a special tool, but you can improvise. Past the governor, I sure don’t recall anything difficult. I just did a quick net search and there are a couple videos out there that can show you how it is done.

Edit: Yes there is a cross shaft. The reaction block distributes clutch pressure, but the cross shaft works the same as an open diff.
 
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