A hydraulic driveline for a vehicle may have a main hydraulic circuit with a first hydraulic displacement unit and a second hydraulic displacement unit. The driveline may have a hydraulic accumulator assembly which is selectively fluidly connected to the main hydraulic circuit by one or more controllable valves of a first group of valves. The driveline may also have a first secondary module that has a first fluid communication of the hydraulic accumulator assembly with a first secondary hydraulic load of the hydraulic driveline. The first fluid communication may be one or more controllable valves that allow connecting the hydraulic accumulator assembly with the first secondary load or separating the hydraulic accumulator assembly from the first secondary load and that belong to a second group of valves. The controllable valves of the second group of valves are controllable independently of the controllable valves of the first group of valves.

A hydraulic driveline for a vehicle may have a main hydraulic circuit with a first hydraulic displacement unit and a second hydraulic displacement unit. The driveline may have a hydraulic accumulator assembly which is selectively fluidly connected to the main hydraulic circuit by one or more controllable valves of a first group of valves. The driveline may also have a first secondary module that has a first fluid communication of the hydraulic accumulator assembly with a first secondary hydraulic load of the hydraulic driveline. The first fluid communication may be one or more controllable valves that allow connecting the hydraulic accumulator assembly with the first secondary load or separating the hydraulic accumulator assembly from the first secondary load and that belong to a second group of valves. The controllable valves of the second group of valves are controllable independently of the controllable valves of the first group of valves.

A stabilizer for a vehicle includes an actuator assembly configured to be coupled to a chassis of the vehicle and a ground pad coupled to the actuator assembly. The actuator assembly is selectively repositionable between an extended position and a retracted position to reconfigure the stabilizer between a lifting configuration and a storage configuration. The ground pad has a bottom surface configured to engage a support surface below the chassis. When the stabilizer is in the lifting configuration, the bottom surface of the ground pad engages the support surface. When the stabilizer is in the storage configuration, the ground pad is not in contact with the support surface.

A stabilizer for a vehicle includes an actuator assembly configured to be coupled to a chassis of the vehicle and a ground pad coupled to the actuator assembly. The actuator assembly is selectively repositionable between an extended position and a retracted position to reconfigure the stabilizer between a lifting configuration and a storage configuration. The ground pad has a bottom surface configured to engage a support surface below the chassis. When the stabilizer is in the lifting configuration, the bottom surface of the ground pad engages the support surface. When the stabilizer is in the storage configuration, the ground pad is not in contact with the support surface.

A stabilizing system includes a plurality of jacks, each operated by a corresponding hydraulic actuator. A hydraulic fluid transfer pump provides supplies hydraulic fluid to and receives hydraulic fluid from one or more pressure chambers of the actuator. A pilot-operated check or directional valve may be provided in fluid communication with one or more of the pressure chambers and configured to regulate the flow of hydraulic fluid to and from the pressure chamber.

A stabilizing system includes a plurality of jacks, each operated by a corresponding hydraulic actuator. A hydraulic fluid transfer pump provides supplies hydraulic fluid to and receives hydraulic fluid from one or more pressure chambers of the actuator. A pilot-operated check or directional valve may be provided in fluid communication with one or more of the pressure chambers and configured to regulate the flow of hydraulic fluid to and from the pressure chamber.

A fire apparatus includes a chassis, a front axle coupled to the chassis, a rear axle coupled to the chassis, a ladder assembly coupled to the chassis, and a stability system. The stability system includes at least one of (i) a front downrigger coupled to the chassis or (ii) a rear downrigger coupled the chassis, and an outrigger coupled to the chassis. The at least one of (i) the front downrigger or (ii) the rear downrigger and the outrigger are extendable and retractable to facilitate leaning the fire apparatus at least two degrees relative to a ground surface while maintaining full operational capability of the ladder assembly.

Systems, methods and apparatus are provided for leveling and/or supporting a plant chassis. In some embodiments, a first set of actuators carry out a leveling routine and a controller monitors a pressure in a second set of actuators as the second set of actuators is extended.

A stabilizer for a vehicle includes an actuator assembly configured to be coupled to a chassis of the vehicle and a ground pad coupled to the actuator assembly. The actuator assembly is selectively repositionable between a retracted position and a lifting position. The ground pad has a bottom surface configured to engage a support surface below the chassis. When the actuator assembly is in the lifting position, the bottom surface of the ground pad engages the support surface and the actuator assembly applies an upward force on the chassis, and when the actuator assembly is in the retracted position, the actuator assembly lifts the ground pad such that the ground pad is not in contact with the support surface.

A stabilizer for a vehicle includes an actuator assembly configured to be coupled to a chassis of the vehicle and a ground pad coupled to the actuator assembly. The actuator assembly is selectively repositionable between a retracted position and a lifting position. The ground pad has a bottom surface configured to engage a support surface below the chassis. When the actuator assembly is in the lifting position, the bottom surface of the ground pad engages the support surface and the actuator assembly applies an upward force on the chassis, and when the actuator assembly is in the retracted position, the actuator assembly lifts the ground pad such that the ground pad is not in contact with the support surface.