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Need advice. Removing Diff fluid

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Old Jan 26, 2007 | 08:42 PM
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Default Need advice. Removing Diff fluid

I'm currentley in the process of removing differential fluid and I removed the fill plug then removed the draing plug. When I removed the draing plug but NO oil came out at all. Granted the car is not warmed up but this thing may be dry. Couldn't get any out with the pump either. I'll let it warm up and see if that loosens the oil up but this is all new to me.
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Old Jan 26, 2007 | 09:22 PM
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Well, there is a pretty good discussion going on about this here:

http://forums.corvetteforum.com/show....php?t=1604208
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Old Jan 26, 2007 | 09:24 PM
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Are you sure you removed a drain plug ? The car did not come with one. Some guys do add one, but if thats not the case you may have just removed one of the cover bolts.
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Old Jan 26, 2007 | 09:56 PM
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Originally Posted by Spankyellow
Are you sure you removed a drain plug ? The car did not come with one. Some guys do add one, but if thats not the case you may have just removed one of the cover bolts.
Hope that is all that there is to it. Feed a piece of small rope in the fill hole and pull it back out--wet would be good, dry, well let us not think about that. Good Luck.

ps--get a cheap siphon gun to suck the old fluid out of there.
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Old Jan 26, 2007 | 10:02 PM
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Try here:


http://www.c4guru.com/articles/Chang...ntialFluid.pdf
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Old Jan 26, 2007 | 10:08 PM
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Well if this is not the drain plug then it will not surprise me? I gave up. I don't have the right vac. I need the Mity Vac but my Sears had never heard of that before even though it's listed on the stores website. I even tried a freaking turkey baster but gravity was a mother so I quit until I get the right vac.

Scroll down to figure 5. That's the drain plug that I removed but nothing ever came out of it.

http://www.autozone.com/servlet/UiBr...3d802128ac.jsp
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Old Jan 26, 2007 | 10:16 PM
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Yep, thats just a cover bolt. You can get a suction gun at a real parts store. It works like a big syringe with a hose on the end.
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Old Jan 26, 2007 | 10:19 PM
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Originally Posted by Spankyellow
Yep, thats just a cover bolt. You can get a suction gun at a real parts store. It works like a big syringe with a hose on the end.
Bet you are glad to hear that. Drive it around a bit to get the fluid hot and stirred up before you suck it out. Makes it easier to do.
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Old Jan 26, 2007 | 10:23 PM
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Originally Posted by Spankyellow
Yep, thats just a cover bolt. You can get a suction gun at a real parts store. It works like a big syringe with a hose on the end.
By looking into the drain plug in the pic in fig. 5 I could see liquid stuff but the that screw that was about 1 1/4 long was dry on the tip fwiw.
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Old Jan 26, 2007 | 10:29 PM
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If it was leaking you would have noticed. Gear oil stinks when it gets on the pipes and burns. I should warn you. The job is messy. Its hard to get to the filler hole with the hose without dripping some. Did I mention ger oil stinks ??

(what you saw in the hole was probably silicone. No gasket on the cover)

Last edited by JackDidley; Jan 26, 2007 at 10:31 PM.
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Old Jan 26, 2007 | 10:39 PM
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Chilton's makes it look so easy a cave man could do it. Whatever's in Chilton's is the same pictures that's on Autozone.com. I'm just curious what that plug was. Nothing like being worn out and frustrated. After getting the oil all over my hands that's when I gave up until I get the right tools. But I didn't mention when I first removed both plugs and lowered the car back on all fours a small amount of gear oil leaked out of the fill plug hole. So I guess it's not bone dry.

There was some thread sealer on the so called drain plug screw.

Last edited by slicked25; Jan 26, 2007 at 10:41 PM.
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Old Jan 27, 2007 | 12:12 AM
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I might as well post this...

C4 Guru - Changing Differential Fluid.
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Old Jan 27, 2007 | 07:45 AM
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Originally Posted by bogus
I might as well post this...

C4 Guru - Changing Differential Fluid.
Bogus; Thank you for the great and informative article. I have printed it off for future reference. Thanks again! You are a wealth of information.
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Old Jan 27, 2007 | 09:48 AM
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I need to change mine also and that article by you will be a great help. Thanks for posting.
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