Patent ID: 8037680

Claim:
A hydraulic control system for a swiveling construction machine comprising: at least one hydraulic travel motor configured to move a swiveling construction machine in a first speed and a second speed based on a variable pilot pressure signal; a first hydraulic actuation device configured to actuate a first function of an implement; a second hydraulic actuation device configured to actuate a second function of an implement; and a hydraulic diverter valve assembly configured to divert hydraulic power between the first hydraulic actuation device and the second hydraulic actuation device while simultaneously maintaining operation of the at least one hydraulic travel motor so that the at least one hydraulic travel motor is capable of shifting between the first speed and the second speed, the hydraulic diverter valve assembly coupled to the variable pilot pressure signal and configured to divert the hydraulic power between the first hydraulic actuation device and the second hydraulic actuation device and shift the at least one hydraulic travel motor based on a level of the variable pilot pressure signal.