TM 9-2330-373-14 & P
2-9. COUPLING SEMITRAILER TO TOWING VEHICLE (cont)
semitrailer and place in their supports.
8. Connect coupling marked SERVICE on towing
vehicle air hose (3) to coupling marked
SERVICE (1) on semitrailer.
1. Service coupling
2. Dummy coupling.
3. Air hose.
9. Connect coupling marked EMERGENCY on towing
vehicle air hose (1) to coupling marked EMERGENCY
(2) on semitrailer.
1. Air hose
2. Emergency coupling
10. Make certain air reservoir drain cock is closed.
11. Open two air shutoff valves on towing vehicle to
pressurize semitrailer air system.