Piston Pump Measuring Tool Test Ring Caterpillar 1293881

The Piston Pump Measuring Tool Test Ring provides a functional interface to hold and set alignment between the port plate, barrel, and slipper retaining plate when determining pump barrel lift-off shim thickness. Positioning the barrel and slipper retaining plate concentrically with the port plate, the test ring allows accurate measurement without shifting components during evaluation. It supports controlled adjustment of shim thickness by maintaining consistent clearance references while the barrel remains oriented along the intended axis.Attributes:• Provides a reference point for lift-off clearance evaluation.• Enables consistent evaluation of barrel and slipper plate clearance.• Aligns all connected pump surfaces simultaneously.Applications: The Piston Pump Measuring Tool Test Ring is used to set and hold alignment between the port plate, barrel, and slipper retaining plate when determining pump barrel lift-off shim thickness.