Step-by-Step Gearbox Assembly Process: 1. Inspect all parts: Check gears, shafts, bearings, synchros, and seals for wear or damage. Replace anything worn out before starting. 2. Install bearings and seals: Press new bearings into place (if needed). Install oil seals at the appropriate locations. 3. Assemble shafts: Carefully slide gears and synchro hubs onto the input and output shafts. Install snap rings or locking mechanisms to hold them in place. 4. Fit synchros: Synchros (synchronizers) ensu