Piston Pump Measuring Tool Test Ring Caterpillar 1293879

The Piston Pump Measuring Tool Test Ring maintains alignment between the port plate, barrel, and slipper retaining plate during pump barrel lift-off shim thickness measurement. It keeps the barrel and retaining plate concentrically aligned with the port plate, supporting consistent evaluation of lift-off clearance. By holding the barrel in a fixed position, the tool allows shim thickness to be measured without component movement, reducing measurement variation and avoiding repeated repositioning.Attributes:• Holds barrel concentrically relative to the port plate.• Provides a stable reference point for lift-off measurement.• Supports accurate determination of shim thickness.• Reduces risk of misalignment during measurement procedures.Applications: The Piston Pump Measuring Tool Test Ring is used to align the port plate, barrel, and slipper retaining plate when measuring pump barrel lift-off shim thickness during service tasks.