Date registered: Sep 2004
Vehicle: 2014 E250 Bluetec 4-Matic, 1983 240D 4-Speed
Mentioned: 2 Post(s)
Quoted: 256 Post(s)
It is poor mechanical practice to put a lot of bearings in line, especially with short spans between bearings, without a flexible element. Alignment becomes near impossible, and more so as you add more bearings. Thus, it is almost certain that two separate "bodies" that are mounted to a frame (a transmission and a differential) can not be practically aligned under most operating conditions without the flexibility of the original system arrangement since the structure of the frame is not going to be mechanically "rigid" leading to all kinds of thermal and mechanical loads that will eat bearings. In a typical transaxle this issue is addressed by minimizing the cramming of a bunch of bearings together in short spans, and by engineering the structure and support system to avoid external loads that can distort alignment and impose unanticipated bearing loads on the system.
So, you will have to do some real engineering to ensure two components that used to be connected by a long, flexible shafting arrangement are compatible in a short, stiff shafting arrangement. All that talk of stiff shafts was not intended to excite you, by the way.