Engine Long Block Short Block. Piston Ring Install Tool compressor For Cummins K19 QSK K38 QSK38 K50 158.75mm. Usage of handle type piston installation tool: In order to make the tool more user-friendly and to ensure smooth entry of the piston ring into the cylinder liner, the inner diameter of the tool during manufacturing is 0.10-0.15mm less than the inner diameter of the cylinder liner. The piston ring is placed into this tool, and the ring mouth is closed. As the inner diameter of the tool is smaller than the cylinder liner, the tool will clamp the piston skirt when closed. The correct piston installation method is to first place the piston skirt into the cylinder liner, and then align the position of the ring mouth, Then use a tool to clamp the piston ring and lightly tap the piston head to allow the piston to enter the cylinder liner. The count starts from the day after you placed your order and excludes weekends and holidays. We are subject to labor law regulations that restrict weekend sales services. All the warrantee Are Limited in Parts Only, engine rotation is very Danger, to be safe when the engine running all the people must keep distance at least 10 feet away from engine rotation radius, any time the shut down valve must be active, keep your engine can be stop any time.