GRAVITY LOWER CONTROL FOR WORK MACHINES

A hydraulic system can include a hydraulic actuator including a first port and a second port.; a hydraulic pump; a hydraulic reservoir; a first control valve operable to selectively control flow from the hydraulic pump to the first port; a first control valve operable to selectively control flow from, the hydraulic pump and the hydraulic reservoir to one or both of the first port and the second port; a load-holding valve positioned between the first control valve and the first port in a first fluid pathway; a first counterbalance valve located between the hydraulic reservoir and the first port in a second fluid pathway that is parallel to the first fluid pathway; and a controller for operating the hydraulic system, and including a lowering mode and/or an. actuation mode.