Rust in rear differential - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**JQ-72** · 03-22-2019, 10:49 AM

I just got this 72 4X4 frame for a build. It has been sitting outside for a while. I pulled the inspection plate to make sure it had a posi in it that was listed on the SPID. When I pried the cover off, about a cup of water came out, then oil! Looks like the bottom side of the carrier and ring gear sat in water for some time. Gear doesn't look pitted too bad. Does this look to far gone to run like it is? What's the best way to clean all this out without a complete tear down. Pictured is the worst side, other side looks OK. Thanks for any help.

03-22-2019, 10:49 AM	#1
JQ-72 Senior Member Join Date: Feb 2001 Location: Killen, Alabama USA Posts: 3,629	Rust in rear differential I just got this 72 4X4 frame for a build. It has been sitting outside for a while. I pulled the inspection plate to make sure it had a posi in it that was listed on the SPID. When I pried the cover off, about a cup of water came out, then oil! Looks like the bottom side of the carrier and ring gear sat in water for some time. Gear doesn't look pitted too bad. Does this look to far gone to run like it is? What's the best way to clean all this out without a complete tear down. Pictured is the worst side, other side looks OK. Thanks for any help. Attached Images __________________ 72 Cheyenne Super swb. Factory 402/400,tach,posi,AM/FM, A/C. Adding cruise, 8-track 72 Cheyenne Super swb. 350/350 A/C, bucket seats 72 Cheyenne swb. Factory 402/400, tilt, posi, A/C 72 Cheyenne Super K-10. 350/4 spd., posi. 72 Suburban 350/350 tilt, tach, AM/FM, A/C, luggage rack 72 GMC Sierra lwb. 350/350, A/C. medium green/olive interior



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