When I drained my L4701 4wd, the manual stated 6.9 quarts - averages about .86 gal per side. (if my math is correct). I did not measure it, but I think my old oil was a fair amount less also. I stopped with one side. I needed more 80-90. I did not measure it, but I plan on finishing today and will measure what comes out. I am thinking that where the bottom of the container is in relation to the drain plug, there may be some that cannot drain. Flushing is not an option, I guess maybe do and extra change to see if it clears up.
NOTE: THIS IS AN EDITED CORRECTION: Probably like mine - L4701. Good Point - There in only one drain plug on the right side no fill or check plug., but all three (drain, fill, and check) plugs on the left side. The right side has only a drain plug. The fill and check plug should be removed first to permit air flow. I orginally thought both sides were the same. I was mistaken. I am beginning to think the bottom doesn't drain. The drain plug is about 3" above the bottom of the container.
I pulled both drain plugs, fill plug, and the check plug.
Something similar to a mityvac, might even be made by them.
Are you sure it doesn't have a drain plug on each knuckle? On one side the drain is facing forward and on the other is facing backwards, but should have 2 drain plugs.
Did mine not too long ago and it took about 9 litres. There are 2 more level check plugs to take out on the inside of the hubs near the top to let some air out that gets trapped there. I will try and post a picture when I get the chance to.
I have attached a picture of the inside front left hub. I have circled the level plug on the hub that needs to be removed when refilling. There is another one on the right hub as well. All in all three level check plugs including the one on the axle case. Open all three of the level check plugs when refilling to let the air out of the top of the hubs. Once all three have shown some fluid to flow out you are at the right level.
