10 bolt diff help please! - Great Lakes 4x4. The largest offroad forum in the Midwest

Go Back   Great Lakes 4x4. The largest offroad forum in the Midwest > 4x4 Talk > Axle Tech
GL4x4 Live! GL4x4 Casino

greatlakes4x4.com is the premier Great Lakes 4x4 Forum on the internet. Registered Users do not see the above ads.
Search
Reply
 
Thread Tools Search this Thread
Old April 22nd, 2012, 10:18 AM   #1
camccardell
tiger blood
 
camccardell's Avatar
 
Join Date: 10-14-08
Location: Homer MI
Posts: 1,358
iTrader: (20)
Mentioned: 1 Post(s)
Default 10 bolt diff help please!

I am working on a 97 burban with a 10 bolt rear axle.

Thing has over 200k on it.
My question pertains to pinion rotation.
With the truck on the ramps, with the parking brake on, I can grab the yoke and rotate it I would say around 10 degrees back and forth. I think that is a bit excessive. Is that normal, or is that a good indication that it needs pinion bearings?

I would rather not tear into this axle, as the rear diff bolts and pan are all rusted to hell. Surely a bolt or 2 would break off and I do not want to drop the fuel tank to fix em.

Ideas?
specs on this, or a way to test it?
camccardell is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old April 22nd, 2012, 10:37 AM   #2
bdd1469
bdd
 
bdd1469's Avatar
 
Join Date: 04-12-10
Location: alto mi
Posts: 2,066
iTrader: (1)
Mentioned: 0 Post(s)
Send a message via Yahoo to bdd1469
Default

Pinion bearings rarely fail unless you run it out of oil,obviously if you have a locker or bigger tires they go thru more abuse.Usually when the pinion is loose the rearend will whine or howl when you let of off the gas at speed.
Spinning the pinion with the park brake holding is giving you all the slop in the rearend,from the backlash,through the spider gears,and even the brake pads can rock a little.
Without pulling the cover you cant do much.The bolts shouldnt break ,if you pound a 1/2 socket on the rusty bolts and remove them with a impact.
I would guess that most of your slop is in the spider gears/cross pin.The only way to find out is to pull the cover and inspect them.Once the cover is off you can check backlash with a dial indicator to see if bearings are gone.
bdd1469 is offline   Reply With Quote
Old April 22nd, 2012, 09:17 PM   #3
camccardell
tiger blood
 
camccardell's Avatar
 
Join Date: 10-14-08
Location: Homer MI
Posts: 1,358
iTrader: (20)
Mentioned: 1 Post(s)
Default

Thanks,
Gotta drop the tank to do this, dammit all to hell.
As far as the oil goes, it took almost a quart to get it to spit back out at me, so I think she was a little low. The pinion seal is shot, and there has been some leaking it looks like.
camccardell is offline   Reply With Quote
Old April 22nd, 2012, 09:24 PM   #4
bdd1469
bdd
 
bdd1469's Avatar
 
Join Date: 04-12-10
Location: alto mi
Posts: 2,066
iTrader: (1)
Mentioned: 0 Post(s)
Send a message via Yahoo to bdd1469
Default

You shouldnt need to pull the tank.Put jack stands under the frame and un hook the driveshaft,and shocks on one end,the rear axle should drop enough to service it.
bdd1469 is offline   Reply With Quote
Reply
Great Lakes 4x4. The largest offroad forum in the Midwest > 4x4 Talk > Axle Tech

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 06:52 PM.


Powered by: vBulletin, Copyright 2000 - 2012, Jelsoft Enterprises Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
Page generated in 0.11581 seconds with 32 queries