TM 5-4310-452-142-15. COUPLING UNIT TO TOWING VEHICLE (Con't).NOTEUse front leveling jack to raise or lower drawbar as required.b.Position towing vehicle so pintle is lined up under drawbar (4).c.Raise front leveling jack (5) with handcrank (3) until the drawbar (4) is seated in towing vehicle pintle and frontleveling jack clears ground, d. Remove locking pin (1) and fold up front leveling jack (5) to travel position, Insert lockingpin to lock leveling jack. Store handcrank (3) in clip (6) on drawbar lunette (7).e.Attach safety chains (10) to towing vehicle.NOTEWhen connecting air lines to towing vehicle,ensure service to service and emergency toemergency connections are made.f.Crisscross service air brake line (11) andemergency air brake line (9) and connect to towingvehicle.g.Connect electrical power cable (8) to towingvehicle.2-21
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