I have been knee deep in QuadraTracs this Spring and have had my hands inside of 15 units. 2 of these had 16% OD part time kits. I only recovered 2 good Case Sprockets out of 13. I recovered ZERO good brake cones.
For reference:
I have dropped hints with BJs Offroad and Novak that it would be nice to be able to source the case sprocket new. You can buy new Novak brake cones at BJs but if you put them in a case sprocket that has been ground up on the beveled surface that the brake cones ride against, then you are destined to grind the new brake cones as well.
Rebuild Kits
Some things I have recently learned is the BK1305 rebuild kits found on the web nowadays no longer have the output shaft bearings in the kit. Some BK1305 kits also do not have the shift fork pads depending on where you buy it. Kit prices vary widely as well.
For those going all out on a rebuild, I have located the proper output shaft bearings. Timken 6206-Z. I found mine for less than $12 each. One side of the bearing has a cover and the other side is open where you can see the caged ball bearings. The open side faces the outside of the case.
Note: Just outside the output bearing is an oil channel that lubes the bearing. There are look-a-likes out there that do not have the cover on one side.
2018 version:
One I bought in 2007:
This kit is a decent price and includes shift fork pads:
https://cobratransmission.com/quadratra ... 55074001-1
Remember, no output shaft bearings in the kit.
Adapter Bearing
If you are looking to replace the T400 adapter bearing, they are almost unobtanium. You might get lucky if you contact Dave @ Cascade 4WD, 800-875-4554. The original Jeep # 8627585. The adapter bearings he tracked down this month do not have any markings on them and were difficult to find.
I'll add notes to this thread as I have time.