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Front Diff Axle Seal Part #? Help!

31K views 17 replies 11 participants last post by  Bills Dad  
#1 ·
I have a 2000 blazer front differential started leaking at the drivers side front axle shaft. Got it all apart and nobody has a seal for this truck and the dealer is closed. The seal came out in a plate with six bolts holding it to the front diff. I need a part number for the seal or the seal and plate. Anyone know if autozone or napa carries these things? Any help would be appreciated.

The truck has 135,000 miles do you think I should replace the axle and hub assembly while I already have this stuff out? I do not know the previous maint. history of the vehicle. Thanks for any help.

-Joe
 
#3 ·
Conveinent, mine is leaking too and has managed to get a good bit of water into my front differential; same mileage as mine as well. Did you have to remove the diff. to replace the seal, or just the half shaft? Pain in the arse?
 
#4 ·
You don't have to remove the diff. I took the spindle out to get the half shaft out. While I was at it I put in a new Half Shaft and Wheel Bearing. It wasn't to bad. I think mine was leaking from the plate with 6 bolts in it on the diff. When you take the plate out you will see what I mean the is a rubber gasket around the metal plate. The half shaft seal still looked good. So for $21 I got the plate with gasket in it already from the dealer.
 
#5 ·
Nice one, thanks for the information. I'll take a closer look tomorow and see what I find. The only black plate I can think of is on the passenger side of the differential.
 
#14 ·
hahaha! wow guys some of you really shouldn't be working on things if you dont have a good knowelge of machanics, I just changed both sides on my 02 s-10, had to replace the needle bearing as well!
If you have a the leak, you need to check out that bearing to! usually the will go out and cause the seal to leak.
bearing is 13 buck orielly, part # MK4012
 
#18 ·
For me, it's hard to tell from pic? I would get a can of cheap parts/brake cleaner at parts store and clean it/wipe it down good then check it for a few days. I found a small mag light in a dark area works well for diagnosing but of course adding dye to diff. then hitting it with a black light is foolproof, by far the most accurate. That red gel does seem like boot grease which is definitely very common also. Good luck..piece a cake though...:)