Adjustment washer for Bucyrus 4100XPCAC

The adjustment washer 12P987D2 is a precision component used to establish and maintain specific clearances between moving or fixed parts in mechanical assemblies. Its primary function is to compensate for manufacturing tolerances, distribute the load of a fastening element such as a bolt, and facilitate the precise adjustment of latch or closure mechanisms. By ensuring a tight fit, this washer prevents excessive play within the assembly.

This component is compatible with large-scale mining shovels, including the Bucyrus 4100XPCAC, Bucyrus 7495HR2, P&H 4100XPCAC, and P&H 7495HR2 models. In these machines, the washer is typically employed in adjustment mechanisms for closures, such as those securing the dipper door or components within the hoist system. Proper adjustment is necessary to prevent misalignment or unintended movement under load during operation.

Adjustment washers serve as spacers to set the correct distance between components in a mechanical system. By selecting the appropriate thickness, technicians can eliminate gaps that lead to vibration or mechanical looseness. These washers are essential for maintaining the structural integrity of linkages and pivot points, ensuring that fasteners remain secure and that moving parts operate within their intended design parameters.