Abstract: A hydraulic system for a work machine having a power source is disclosed. The hydraulic system has a tank configured to hold a supply of fluid and a source configured to pressurize the fluid. The hydraulic system also has a brake mechanism in fluid communication with the source to receive pressurized fluid and a power source cooling fan in fluid communication with the source to receive pressurized fluid. The hydraulic system further has a load-sensing valve in fluid communication with the source to control an output of the source in response to a load on the brake mechanism and a load on the power source cooling fan.

Abstract: A tip and adapter assembly for an earthworking bucket has a replaceable tip mounted on an adapter. The adapter has a mounting end fitted into a socket cavity of the tip, which are provided with suitable mating surfaces for transferring loading forces from the tip to the adapter. The adapter is provided with an ear that projects into a U-shaped notch in each side of the tip. A gap is provided between the ear and the notch to indicate that excessive wear has not occurred in the tip/adapter interface. However, contact between the ear and notch serves as a visual indicator that excessive wear has occurred. The notch also serves as a fuse to ensure that the tip breaks due to excessive loads before the adapter.