I am interested in doing this job this summer. I, too, have the ATC 35L transfer case without a drain plug.
After observing the schematics of this T case, my idea is this:
1) Put the car on jack stands or a lift so that the wheels are free to rotate
2) After gaining access to the fill hole, insert tube and rotate front drive shaft counter clockwise. This will turn the gear which the tube is touching so that it pulls the tube down (into bottom of case).
Possible Caveats:
- Tube may be blocked by something other than a gear, in which case this method would not help.
- Unable to turn front drive shaft counter clockwise, but I'm pretty sure you can with the car off and in park. (I played with this when doing tranny fluid)
- Turning front drive shaft will not rotate other gears
- Space next to gear is simply too narrow for certain sized tubes
Thoughts?