360 Modena gear box manual - All Ferraris

• Remove the ORings (9) and the spacer (10). It is advisable to replace the ORings at each
overhaul/dismantling.
A seal ring (11) that must be replaced at each overhaul is fitted onto the gearbox side of the flange.
If the flange has been replaced, during re-assembly it is necessary to calculate the thickness of the
spacer (10) to maintain a certain axial thrust load on the external track of the bearing (12). To
determine the thickness (S) of the spacer, apply the following formula: S=(A1-A2)+0,1 mm, where:
- A1 = distance (A), on the gearbox, between the front surface and outer track of the bearing;
- A2 = distance (A), on the flange, between the faying surface with box and the end-limit surface with
outer bearing track
Spacers (10) with a thickness of 0,1 mm are available. Using these it is possible to get close to the
calculated thickness.