360 Modena gear box manual - All Ferraris

D4.05 GEARBOX OVERHAUL
Gearbox identification
The gearbox is identified by two numbers punched into the upper part of the housing, on front of the
upper flexible bushing's seat (see Fig. 1).
A Identification number for gearbox type:
177892 Manual control
177893 Electronically controlled
181248 Challenge
B Manufacturer's serial number.
NOTE
Gearboxes up to the serial number 2100 reported the complete engine power unit number along
with the identification number.
Seal test
To check there are no leaks, it is possible to carry out a gearbox seal test while still completely
assembled. All the outward openings must be stopped (use the closing plate AV 3536, to close off
the engine coupling side) and the relative air inlet union AV 3283 must be fitted in the breather valve
seat.
• Supply air until reaching a pressure of 0,3 bar, using a standard inflation equipment with a
precision pressure gauge.
• Using the leakage detector spray, check for any eventual leakages on the gearbox housing.
In case of leakage, it is necessary to replace the external seal rings and/or check the couplings of