Project Objectives
	Team Members: Josh Balser, Matt Maguire, Jesse Sunderland, Dan Terek The rear access door on the New Holland skid steer is difficult to adjust and droops after time making closing the door difficult. The current design is a single hinge at the bottom right hand corner that connects the rear door of the New Holland skid steer loaders. It is used on all the different sizes of the loader from the smallest to the largest even though the door size and weight differs. When originally installed the hinge is properly adjusted but the door is still hard to open due to the over-tightening of the bolt. New Holland would like a hinge that eliminates the problems that are occurring in the existing design. The new design should be more reliable but not add to the cost of assembly or to parts cost. This design must be as reliable and strong as the existing design. It must be adjustable to conform to the rear chassis and door tolerances. Ease and repeatability of operating the door must be incorporated into the redesign. The redesign of the hinge was fairly open ended with how we would like to accomplish the desired goals. However, cost was a major issue. The new design did not add much cost in either manufacturing, assembly, or new material costs. The solution has to be used on all skid steer models. The current strength and reliability of the hinge was not decreased to incorporate the redesign. New Holland gave the group the freedom to change the chassis, door, or any exterior components, which may interfere with the hinge. Limitations: 1.) Cost 2.) Adjustment 3.) Non load bearing upper frame Solution Modified Inner Sleeve The final design chosen for the skid steer rear door assembly was the modified inner sleeve. This design was the best solution due to the nearly identical manufacturing and assembling costs and processes. The outer diameter of the inner sleeve remained the same while the inside diameter was reduced. By reducing the inside diameter of the inner sleeve, the excess play in the hinge assembly was eliminated. The adjustment on the skid steer model is now provided by the amount of play between the bolt and door bracket. If more adjustment is needed, it can be obtained by increasing the hole diameters on the door bracket. Similarities: · Outer sleeve and bushing · Bolt and nut assembly · Mounting location of hinge · Latch and locking assembly · Door bracket · Manufacturing process · Assembly process Differences: · Inner diameter of inner sleeve · Washers added to bolt/nut assembly · Adjustment achieved through bracket hole diameter