TM 9-2320-361-10 2-47. OPERATION OF AIRBRAKE (TRAILER) KIT a. General. Airbrake (trailer) kit is installed on vehicles hauling trailers or artillery equipped with airbrakes. It is used when heavy payloads are to be hauled and separate braking of the trailer is desired. b. Coupling Trailer to Vehicle. • Refer to appropriate trailer TM for complete trailer opera- tion procedures. • Attaching yoke of trailer or artillery load to pintle hook requires two or more crew- members, depending on size and weight of load. (1) Remove cotter pin (4), lift lever (3), insert yoke (8) of trailer or artillery load into pintle hook (9) of vehicle, lower lever (3), and install cotter pin (4). (2) Connect load air lines (7) to air couplings (5) of towing vehicle. WARNING Air shutoff valves must be turned on to charge trailer brake system. Failure to do this may result in trailer brake failure causing injury or death to personnel. (3) Pull up handles (6) to charge trailer brake system. (4) Connect trailer brakelight cable (1) to electric receptacle (2). c. Airbrake Kit Operation. (1) Start engine (refer to para. 2-14 or 2-15) and operate vehicle as necessary. NOTE Airbrake hand control should be engaged slowly to provide steady, even braking. (2) Pull down airbrake hand control (10) to apply brakes of towed load WARNING Make sure air shutoff valves are turned off after uncoupling trailer. Failure to do this may result in vehicle brake failure causing injury or death to personnel. 2-196