The only thing constructive hinges of a back shaft is the bottom arrangement of lock rings of bearings. Dismantling-assemblage procedure look in subsection subsection 9.3.9.1.
QX4.ONLINE S40.ONLINE A-8.ONLINE W124.ONLINE RX300.ONLINE W140.ONLINE B3-B4.SPACE B3B4.SPACE A-8.SPACE