AMANA HEAT PUMP PROBLEMS

Oscillating Piston Pump

piston pump


A type of hydraulic pump that uses cam lobe action against pistons to generate hydraulic fluid flow for the lifting of implements. Though superior in their characteristics and longer lasting, excessive numbers of parts (meaning expense) limited their use to only a couple of manufacturers.


Piston pumps, as used in hydraulic systems, create a flow by pistons moving in and out of cylinder bores as the latter pass over inlet and outlet ports.

oscillating


(oscillate) move or swing from side to side regularly; "the needle on the meter was oscillating"


Move or swing back and forth at a regular speed


Waver between extremes of opinion, action, or quality


(oscillate) hover: be undecided about something; waver between conflicting positions or courses of action; "He oscillates between accepting the new position and retirement"


oscillatory: having periodic vibrations


Vary in magnitude or position in a regular manner around a central point