So I ended up using this penzoil pump...
Basically it sucked. Both literally and figuratively. But i got it to work. I used the "airline" hose that came with it as it was skinny enough to fit deep into the diff. After 20 minutes of pumping, I'm pretty sure I got all of the old diff fluid out. The pump was hardly efficient (air leaks), the syringes would've worked better for sure.
It wouldv'e been nearly impossible to measure how much I got out, but I was able to pump in around 1.4 qts more or less.
Saved me the hassle of other more involved options. Thanks all for the suggestions! Forum is awesome.
Originally Posted by hossmaster
get the largest one and a hose to fit it.
Syringes are not a bad idea...eliminates the air sucking of cheap auto parts store pumps. If/When I do this again, I'll go this route.
Originally Posted by twfsa
^^^^ thats worth a try but the fluid is heavy, if the 10mm hex doesn't work and its already Fucked up I would try a chisel on the edges of the plug.
If you are able to suck it out measure what comes out so you don't over fill it .
There is another way to get that plug loose, I can't remember from mine how much room there is where the plug is located, but a good welder could take a nut the diameter of the plug and weld the center of the nut full to the differential plug.
I'm hesitant to bang on it, last thing I want is to F up the diff threads. Welding a nut onto it is a great idea. When the time comes to really remove the current plug, I'm going to do this then REDO it with a new plug/nut. That way I dont have to worry about stripping in the future.
Also, I was under the impression that fill plugs are strategically placed on their respective parts to prevent overfilling. IE; you know when your at capacity when fluid comes out of the fill plug. Could be wrong about this though.
Originally Posted by 2004tacoprerunner
hand pumping that thick gear oil is going to be a bitch. If you know someone with a mityvac fluid extractor run off a compressor it will make it a lot easier.
Total bitch. My friends aren't as mechanically inclined...doubt they can change their oil themselves.