TM 9-2320-303-102-19.UNCOUPLE FROM SEMITRAILER (Con't).m. Stop and set parking brake (paragraph 2-2).2-20.PINTLE TOWING PROCEDURES.a.Remove cotter pin (3), engage latch (4), and lift lock (5) to open position.b.Connect trailer to pintle hook (6).c.Push lock (5) down ensuring latch (4) engages and install cotterpin (3).d.Connect intervehicular electric cable from receptacle (1) on rear of vehicle totrailer.e.Conned air hoses from trailer to quick-disconnect couplings (2) at rear of vehicle.f.Connect safety chains.WARNINGFailure to completely turn ON or OFF air cutoff valve will cause loss ofbrakes on trailer or truck.g.Open trailer air supply valve on hosetenna behind cab and push in trailer airsupply knob on instrument panel.2-76
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