12 Bolt Gear Carrier - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**AlaskaK10** · 08-29-2023, 07:14 AM

Hi Everyone

Work was progressing smoothly on my 66 K10 until I hit a bump in the road with the 12 bolt rear end. When I removed the cover some water came out and a small amount of oil. I thought OH S.....T! Anyway upon opening it I found the ring gear had rust pits on three teeth. Further when trying to get the C clips out the axles were frozen in place. I had to persuade them with a few good whacks with a rather large hammer which got them to move in enough to get the clips off. In doing this though I broke one of the blocks that the pin goes through that sits against the spider gears. A part of the C clip must have hit it. I wonder if the part can be found to replace. Or what other solutions might be advisable. I can buy a new Yukon posi unit with new gears for around 700. What's the thoughts on this one?

08-29-2023, 07:14 AM	#1
AlaskaK10 Junior Member Join Date: Mar 2023 Location: BREMERTON Washington Posts: 81	12 Bolt Gear Carrier Hi Everyone Work was progressing smoothly on my 66 K10 until I hit a bump in the road with the 12 bolt rear end. When I removed the cover some water came out and a small amount of oil. I thought OH S.....T! Anyway upon opening it I found the ring gear had rust pits on three teeth. Further when trying to get the C clips out the axles were frozen in place. I had to persuade them with a few good whacks with a rather large hammer which got them to move in enough to get the clips off. In doing this though I broke one of the blocks that the pin goes through that sits against the spider gears. A part of the C clip must have hit it. I wonder if the part can be found to replace. Or what other solutions might be advisable. I can buy a new Yukon posi unit with new gears for around 700. What's the thoughts on this one? Attached Images



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