Abstract: A frequency suppressor for a hydraulic system is shown and described. The frequency suppressor comprises a housing that contains a substantially fixed mass of a compressible substance. The volume of the compressible substance is varied to dampen frequency disturbances in the hydraulic system.

Abstract: A method and structure for retaining a tube in place relative to a surface of a device, such as a motor or pump, for fluid communication there-between. The tube retainer comprises a tube having a retention groove, disposed adjacent an open end thereof, and a holding clamp having a slot which is engageable with the retention groove. The holding clamp further comprises a bolt hole for receiving a threaded bolt for engaging a threaded bore in the device to attach the holding clamp thereto, thereby holding and retaining the tube relative to the surface of the device.