How to drain the fluid from the front diff?
#1
Thread Starter
Join Date: Feb 2006
Posts: 6

I have a 97 Blazer4x4. I did not find a drain plug for the front gear box. Any Suggestions?
#2
Junior Member
Join Date: Oct 2006
Location:
Posts: 402

For the front diff, there is a drain plug near the bottom of the main housing near the split in the case. HTH
#3
I don't think that the earlier front diffs had a drain. If this is the case, then you'll need to get a transfer pump (hand powered are available for not a lot of $$$) and suck out all of the fluid out of the fill hole.
#4
Super Member
Join Date: May 2007
Location: Appleton, WI / Houghton, MI
Posts: 1,980

Agreed with swartlkk, I have a 98 and no drain plug that I could see so I just got a hand pump for like less than $10. It worked great and was good for removing the fluid from the front and rear diff and then adding the new stuff, it just screwed onto the top of the quart bottles.
#5
Thread Starter
Join Date: Feb 2006
Posts: 6

I didnt find a drain plug, so i guess i am going to buy a hand pump thanks guys
#6
BF Veteran
Join Date: Jun 2006
Location: Vancouver. B.C. Canada
Posts: 3,429



I think the drain plug may look like one of the housing bolts on the '98 model.
[IMG]local://upfiles/2910/BFF64D26D3204DCA8DA01516853833A6.gif[/IMG]
[IMG]local://upfiles/2910/BFF64D26D3204DCA8DA01516853833A6.gif[/IMG]
#7
BF Veteran
Join Date: Jan 2007
Location: GP AB CA
Posts: 3,946



Yep, it looks exactly like a housing bolt, except it's got the little tell-tale plastic ring under the head of the bolt... If there is one... My Haynes manual tells me the front diff has no drain plug at all, even though mine is there, lol.
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