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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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#30159 10/03/2003 6:38 AM | Joined: Feb 2002 Posts: 167 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2002 Posts: 167 | Hi Everyone, The rear end in my truck is leaking gear oil.  It's the seal where the driveline meets the pinion. Here\'s a pic of the rear end. I've got the seal to replace the old one, but is there a website out there that shows "how to" rebuild the 10 bolt eaton rear axle? TIA, David
My truck don't leak oil, it just marks its teritory.
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#30160 10/03/2003 7:27 AM | Joined: Feb 2000 Posts: 5,202 'Bolter | | 'Bolter Joined: Feb 2000 Posts: 5,202 | You need to find someone with a shop manual with that axle in it. Most of the later model rear axle assemblys use the same type of arangement. The pinion is set in two bearings, one at each end. The preload (adjustment) on the bearings is set by the pinion yoke and lock nut. You have to pull the yoke off to get to the seal. That part is pretty easy. The hard part is getting the bearings set back to proper torque. Some of the Dana type axles used shims between the bearings and you just have to tighten up the nut. The late model 10 and 12 bolt GM's have what is know as a CRUSH SLEEVE. Its ment to be compressed as the nut is tighten. Is very stiff and takes a lot of torque to compress it. Thats the tough part, pulling 200 foot pounds while trying not to go to much. If you go to tight, its trash and you have to get a new one and start again. Manuals list the inch pound force of rotation on the yoke. If you do them a lot you can tell by feel when its tight.
Find a manual and get after it. You will need a pipe wrench and big breaker bar, socket, and torque wrench. Joe | | |
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