closed position and maintenance personnel wish to move it to the open position the maintenance personnel must first remove the door bolts 134 coupling the doors 50 to the frame 34 the maintenance personnel then power the actuator cylinder 58 to move the actuator cylinder 58 and thus the guard group 38 into the open position when the guard group 38 is in the open position mechanical components are accessible for maintenance or repairs the guard group 38 may be removed from the machine 10 if a large mechanical component such as the oil pan needs to be removed from the machine 10 the guard group 38 can be accessed for minor service by removing the four door bolts 134 which are fastened to the threaded opening 82 welded to the cross members 74 the guard group 38 can be accessed for major service by removing the bolts 102 which are attached to the frame 34 removing the four bolts 102 will allow the guard group 38 to suspend from the hinge 122 and to move between open and close positions upon actuation of actuator cylinder 58 during which the door bolts 134 should not be removed it will be appreciated that the foregoing description provides examples of the disclosed system and technique however.