TM 9-2320-260-10NOTESteps 12 (a) (b), and (c) apply to M818 vehicles only replacementfifth wheel).(12) To position wedges (15) (M818 vehicles only):(a) Remove two screws (16) from each wedge (15).(b) Remove wedge (15). and reverse position.(c) Install screws (16) in two most forward mounting holes for cross-countryposition. Reverse wedges (15) and install screws (16) in two most rearward holes forhighway position.(13) Remove emergency airbrake hose (6) from hose supports (5).Make sure to connect service airbrake hose to service coupling onsemitrailer. and emergency airbrake hose to emergency coupling.Hoses not properly connected will cause brake failure. This canresult in injury or death.(14) Connect emergency airbrake hose halt coupling (Z) to halt coupling (1) onsemitrailer emergency airbrake system and lock in position.Failure to turn on air shutoffvalves will result in loss of brakeson towed vehicle. This may causeinjury to personnel.NOTEService air valve handle is located ondriver’s side of vehicle.(17) Move service and emergency airvalve handles (7) to open position.(15) Remove service airbrake hose (6)from hose supports (5).(16) Connect service airbrake hose halfcoupling (3) to half coupling (4) on semi-trailer service airbrake system and lock inplace.2-146
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