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potential rear end problem

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Old Jun 21, 2004 | 09:10 PM
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Default potential rear end problem

yesterday I changed the fluid in my differential. I bought 2 quarts of gear oil, a new gasket, and the GM limited slip additive. My car is a 2001 Z28 with the stock 2.73 gears with 30,000 miles on the odometer. I jacked up the car, placed an oil pan on the ground under the differential, and removed the bolts. The oil started to drain slowly and then I pulled the cover off of the car (very carefully) and the rest of the oil drained out. I then grabbed a razor blade and scraped off the old gasket from the differential housing and the differential cover as well. To clean the inside of the cover I used some carb/throttle body cleaner and wiped it with a rag.

I wanted to clean the magnet(i think it's a magnet) that stuck to the inside of the cover. It had some sludge on it that I wiped off. Once I had it cleaned up, I noticed that it has a good sized crack in it! I was at my parent's house so I didn't have my digital camera or I would have taken some pictures, but it's roughly about 1/8" wide and 3/4" long on one of the edges of the magnet. I needed to get the car back together so I could get back to my house (the car is my daily driver) so I put it back together and refilled it. It drives no problem, but this can't be good. any advice?

anyone know if this is a ticking bomb or if I am OK? anyone else heard of this problem?
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Old Jun 21, 2004 | 09:44 PM
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It is just a magnet and should stay stuck to the cover with or without a crack. It's job is just to collect the minute metal particles that float around in the lube.
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Old Jun 21, 2004 | 10:01 PM
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but if the magnet is chipped then where did the chip go?

if it cracked off wouldn't it float around in there and damage the gears?
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Old Jun 21, 2004 | 10:22 PM
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A magnet isn't going to float around too long inside a rear end housing before it finds something to stick to.
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Old Jun 21, 2004 | 10:30 PM
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Yeah what he said.
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Old Jun 21, 2004 | 10:39 PM
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good point
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