What is this leak?
#4
Right front outer axle shaft seal. Half shaft must be removed to replace the seal. Don't let the front differential run low on fluid. At this point, parts are under $20, if the differential runs dry, it will be well into the hundreds.
#7
Thanks for the input on this. The saga continues. I finally got some time to do this today, first day here in North Dakota that I had a spare hour and it wasn't too cold to even think about it.
I crawled underneath a few weeks ago, and noticed that the plug was rounded! A surprise gift from my mechanic, I'm sure! So, I order the plug, or what I thought would be a suitable replacement plug (part #15588374) and wait for it to arrive in the mail. It finally comes, and I get to work on removing the stuck plug, starting with sockets of different types, then pipe wrenches, then chisel and hammer, then heat, and finally, I just weld a nut on there. My first welding job was crap since the area is kind of tight in there for a stick welder. Finally, the second try gets a solid weld. I remove the plug, and what do you know? I ordered the wrong plug! I got the wrong part #. The one I took out was a lot bigger. On the bright side, I still had plenty of gear oil in there, and I just topped it off and put my welded plug back on there.
So, what is the right part # for the fill plug on the front differential on a 99 Blazer 4x4? The one I ordered is on the left side in the pictures (part #15588374) and the actual plug (with a 3/4" thread bur welded on the head). The one on the left (the wrong part that I ordered) is a metric 12 x 1.5 thread pitch plug, and as you can see, the actual plug is much larger than that. So, my mission now is to track down the actual plug part # so I can order the right one this time, although I suppose there's nothing wrong with the one I have now that I can take it off.
I crawled underneath a few weeks ago, and noticed that the plug was rounded! A surprise gift from my mechanic, I'm sure! So, I order the plug, or what I thought would be a suitable replacement plug (part #15588374) and wait for it to arrive in the mail. It finally comes, and I get to work on removing the stuck plug, starting with sockets of different types, then pipe wrenches, then chisel and hammer, then heat, and finally, I just weld a nut on there. My first welding job was crap since the area is kind of tight in there for a stick welder. Finally, the second try gets a solid weld. I remove the plug, and what do you know? I ordered the wrong plug! I got the wrong part #. The one I took out was a lot bigger. On the bright side, I still had plenty of gear oil in there, and I just topped it off and put my welded plug back on there.
So, what is the right part # for the fill plug on the front differential on a 99 Blazer 4x4? The one I ordered is on the left side in the pictures (part #15588374) and the actual plug (with a 3/4" thread bur welded on the head). The one on the left (the wrong part that I ordered) is a metric 12 x 1.5 thread pitch plug, and as you can see, the actual plug is much larger than that. So, my mission now is to track down the actual plug part # so I can order the right one this time, although I suppose there's nothing wrong with the one I have now that I can take it off.
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