2. BRAKING SYSTEM 2.3 TRAILER BRAKING SYSTEM 2.3.3 AIR TRAILER BRAKING (ITALY VERSION) 3 E 2 4 5 1 6 G 9 8 10 7 D0011690 COMPONENTS 1. Compressed air reservoir 2. Air compressor 3. Engine 4. Pressure limiting valve (7.8 bar (113 psi)) 5. Quick-action coupler for trailer 6. Trailer braking valve 7. Circuit pressure sensor 8. Circuit pressure indicator 9. Brake master cylinder 10. Brake 10-26