F97/F98�Complete�Vehicle
4.�Powertrain
39
4.4.�Differential
4.4.1.�Front�axle�differential
The�VAG168AL�front�differential�familiar�from�the�G05�is�used.
Technical�data
Technical�data Front�axle�differential�168AL
Oil�volume 0.45�l
Oil�grade�ex-works Fuchs�Titan�EG3846
Oil�grade�in�BMW�Service Castrol�SAF-XO
Maximum�input�torque 1300�Nm
Possible�ratios 3:154
Weight�including�oil�filling 11.74�kg
Current�front�axle�differential�oil�recommendations�and�capacities�can�be�found�in�the�current
documentation�of�the�BMW�workshop�information�system.
4.5.�Drive�shafts�and�output�shafts
4.5.1.�Front�driveshaft
The�front�propeller�shaft�has�been�carried�over�from�the�G01/G02.
4.5.2.�Rear�driveshaft
This�is�a�steel�prop�shaft�carried�over�from�the�F90�and�adapted�to�the�F97/F98.�The�dimensioning�and
strength�of�the�prop�shaft,�the�center�bearing,�the�flange�connecting�to�the�flexible�disc�on�the�transfer
box�and�the�flange�connecting�to�the�rear�differential�have�been�adapted�to�the�higher�torque�of�the
F97/F98.
The�maximum�permissible�deflection�angle�of�the�propeller�shaft�must�not�be�exceeded�when�working
on�the�propeller�shaft�center�bearing.�The�instructions�in�the�current�repair�instructions�in�ISTA
absolutely�must�be�followed.
It�is�important�to�follow�the�procedures�in�the�current�repair�instructions�in�ISTA�regarding�inserted�and
screwed�propeller�shafts�on�the�rear�axle�differential.