2. BRAKING SYSTEM 2.3 TRAILER BRAKING SYSTEM 2.3.4 AIR TRAILER BRAKING (EXPORT VERSION) 3 E 2 4 1 5 Red 5 Yellow 5 6 Black 7 G 8 9 10 11 D0011681 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 (2-way) 7. Trailer braking valve (1-way) 8. Circuit pressure sensor 9. Circuit pressure indicator 10. Brake master cylinder 11. Brake 10-27