emergency hand pump
A hand-operated fluid pressure pump for moving fluids such as gasoline, hydraulic fluid, or oil by a back-and-forth movement of the pump handle. The most common use is in a reciprocating engine where the wobble pump is used to build up fuel pressure before starting. Also known as an emergency hand pump.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved