Originally Posted By: FL_Rob
For those in the engineering world.
How would I describe too much lash or clearance at a bushed end of (connecting rod) of a linear plunger pump such as a cat pressure washer pump?
Engineer speak for longitudinal lash?
Still not clear on which axis you're calling "longitudinal." If you're talking about the bushed end of a connecting rod, the clearance that allows the bushing to move along the axis of the crankshaft perpendicular to the conrod would be 'side clearance,' to the best of my knowledge. The clearance that allows motion of the conrod relative to the crank along the axis of the connecting rod is just 2x the regular old bearing clearance.
If you're talking about motion of the crankshaft along its own long axis (I'm pretty sure you're not, though), I'd call that "thrust clearance."
Measuring side-clearance of paired conrods:
Schematic of bearing clearance ("c") which allows a total motion of 2c:
