2-22. CHARGE AIR SYSTEM.
Trailer wheels must be chocked or drawbar connected to truck before coupling trailer
gladhands to truck. Failure to comply may result in injury or death to personnel.
When air pressure is supplied through emergency line, trailer brakes will automatically release.
When line is disconnected trailer brakes will automatically lock.
Chock trailer wheels, (Para 2-20).
Remove cover (1) from truck emergency gladhand (2).
Hook up emergency hose gladhand (3) to truck emergency gladhand (2).
Refer to TM 9-2320-364-10 and start truck.
Push in trailer air supply valve (4) located in truck cab.
Allow trailer air pressure to build to operating pressure 120 to 125 psi (827-861 kPa).
Pull out trailer air supply valve (4) located in truck cab.
Refer to TM 9-2320-364-10 to shut off truck.
Remove trailer emergency gladhand hose (3) from truck emergency gladhand (2).
Install cover (1) to truck emergency gladhand (2).