TM5-3810-305-10Section VIOperation Under Emergency or Abnormal ConditionsEmergencyLoadLowering Procedure.In the event that lowering a suspended load bythe normal means is impossible due to enginefailure, pump failure or a hydraulic line failure, ahydraulic hand pump is provided. The followingprocedures will restore the vehicle to a normaltraveling or towing attitude.During the execution of thisprocedure, the danger exists ofuncontrollably dropping a load.Rotate the upperstructure to asafe position. Failure to followthis procedure could causeDEATH or serious injury.NOTESwing the Boom Mechanically1.2.3.Remove three nuts (1), bolt (2), three washers(3), five bolts (4), washers (5), deck plate (6),and pinion cover (7, Figure 4-52).NOTEMove swing lever in same swingdirection to relieve oil pressureas the upperstructure is beingturned.Attach a wrench to the protruding shaft of theswing box drive. Turn swing box drive shaftclockwise to swing boom to the right andcounterclockwise to swing boom to the left.Rotate the upperstructure and the load to asafe area.Two men are required to performthis task.Figure 4-52. SwingDriveBox4-56
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