Specifications
| Auger/Chain Port | 3/4 SAE ORB (-12) |
|---|---|
| GPS Included? | No |
| Hoist Action | Power Up/Power Down - 1 Port Relief |
| Hoist Control Included | Yes |
| Hoist Control Type | Electric |
| Inlet Port | 3/4 SAE ORB (-12) |
| Magnetic Drain Plug | Yes |
| Main Relief Setting | 2500 |
| Maximum Flow Rate | 40 |
| Maximum Pressure | 3000 |
| Number of Functions Supported | 6 |
| Oil Level/Temperature Gauge Included | Yes |
| Outlet Port | 2 NPT |
| Plow Action | Power Up/Power Down |
| Plow Control Included | Yes |
| Plow Control Type | Electric |
| Port Relief Angle | 1800 |
| Reservoir Material | 304 Stainless Steel |
| Reservoir Mount Position | Side Mount |
| Reservoir Type | Standard |
| Reservoir Volume (Gal.) | 30 |
| Return Line Filter Flow Rating | 50 |
| Return Line Filter Included? | Yes |
| Return Line Filter Rating | 25 |
| Spinner Port | 1/2 SAE ORB (-8) |
| Spreader Control Included | Yes |
| Spreader Control Type | Electric Over Hydraulic |
| Spreader Controller | 3039773 |
| Suction Filter Rating | 150 |
| Suction Filter Flow Rating | 49 |
| Suction Filter Included? | Yes |
| Suction Port | 2 NPT |
| Work Ports | 3/4 JIC (-12) |
The Buyers Products 30 Gallon Central Hydraulic System represents a sophisticated and integrated solution for managing multiple critical functions on medium to heavy-duty vocational vehicles. This particular configuration, denoted as a 6-function system with Electric/Hydraulic Proportional control and Manual Spreader Velocity Control, offers robust performance without the inclusion of GPS functionality, thus catering to applications where ground speed correlation for spreading is managed manually or not required. The system's design prioritizes operational efficiency, ease of installation, and enhanced durability, making it an indispensable asset for commercial, municipal, and contractor fleets involved in tasks such as material spreading, snow removal, and dumping operations.
At its core, this Central Hydraulic System consolidates the power and control for up to six distinct hydraulic functions into a single, cohesive unit. This integrated approach significantly streamlines the vehicle's hydraulic architecture compared to traditional setups that might utilize separate power units and control interfaces for each implement. The six functions typically encompassed by such a system include: hoist operation for dump bodies, plow lift (up/down), plow angle (left/right), auger/chain conveyor control for material spreaders, spinner control for material spreaders, and often a pre-wet system. The consolidation reduces overall system complexity, minimizes potential leak points, and simplifies troubleshooting and maintenance procedures, ultimately contributing to higher vehicle uptime and lower operational costs.
A cornerstone of this system's advanced capability is its Electric-Hydraulic Proportional control. Unlike traditional on/off hydraulic systems, proportional control allows for variable flow and pressure, enabling precise and smooth modulation of hydraulic actuators. This means operators can control the speed and force of implements with much greater accuracy, resulting in smoother plow movements, more consistent material spreading, and precise hoist operations. The "electric-hydraulic" aspect refers to the use of electrical signals from the in-cab controller to actuate proportional hydraulic valves located on the reservoir assembly. This design eliminates the need to run numerous hydraulic lines into the vehicle cab, a significant advantage for both installation and in-cab environment quality. By keeping hydraulic lines, heat, and noise outside the cab, operator comfort is vastly improved, and the risk of hydraulic fluid leaks inside the vehicle is eliminated. The installation process is simplified as it primarily involves routing electrical wiring and fewer, more direct hydraulic lines to the implements.
The user interface for this sophisticated control system is a modern, color TFT-LCD touchscreen display, housed within a robust console featuring a floor base. This console provides a user-friendly and ergonomic control center for the operator. The touchscreen interface offers intuitive navigation, allowing operators to easily select functions, adjust parameters, and monitor system status. This digital control platform is a significant upgrade over traditional mechanical lever systems, offering greater programmability, diagnostic feedback, and customization options for various operational scenarios.
Specifically addressing the spreader capabilities, this system features manual spreader velocity control. While a GPS-based ground speed control system is available as an option for other configurations, this particular model is designed for applications where precise, operator-driven control of material application rates is preferred or sufficient. The proportional spreader operation, encompassing both auger/chain and spinner functions, allows the operator to manually adjust the flow rate to each component. This enables fine-tuning of material delivery (e.g., salt, sand, gravel) and spread pattern based on current conditions, operator experience, and specific job requirements. The proportional control ensures a smooth and consistent application, minimizing material waste and maximizing effectiveness, even without automatic speed correlation. The system's controller (P/N 3039773) is specifically engineered for this precise electric-over-hydraulic spreader control.
The hoist system integrated into this central hydraulic unit is designed for heavy-duty dump applications. It features a robust 30 GPM 4-way Double-Acting (DA) circuit, providing both power-up and power-down capabilities for the dump body. This dual-action control offers superior control and safety compared to single-acting (gravity-down) systems, allowing for precise positioning and controlled lowering of heavy loads. The inclusion of a down port relief valve is a critical safety feature, protecting the system from over-pressurization during the lowering phase and ensuring smooth, controlled descent. The "power beyond" feature indicates that the main hydraulic flow can be directed to other hydraulic circuits after powering the primary hoist function, maximizing the utility of the hydraulic pump. For applications requiring critical load holding, such as certain crane or lift gate functions, the manufacturer explicitly recommends the installation of Pilot Operated (P.O.) checks or counterbalance valves. These additional valves provide enhanced safety by preventing unintended movement or drift of loads, especially under static conditions or in the event of a hydraulic line failure.
For snow removal and plowing operations, the system includes an 11 GPM 3-way plow lift and a 4-way plow angle circuit. The 3-way plow lift typically signifies power-up and gravity-down functionality, providing efficient and responsive vertical movement of the plow. The 4-way plow angle allows for precise hydraulic control of the plow's left and right angling, enabling operators to quickly adjust the plow's orientation to clear snow effectively. Critically, this circuit incorporates two port relief valves. These valves are essential for protecting the plow and hydraulic system from shock loads and excessive pressures that can occur when the plow encounters obstacles or during aggressive plowing maneuvers. They ensure the longevity of the equipment by safely diverting fluid when pressure limits are exceeded. Both plow and hoist controls are electric, further minimizing in-cab plumbing and contributing to the system's clean, integrated design.
The physical foundation of this central hydraulic system is its 30-gallon reservoir assembly, meticulously constructed from 304 stainless steel. This material choice is paramount for vocational vehicles operating in harsh environments, particularly those exposed to road salt, brine, corrosive chemicals, and inclement weather conditions. 304 stainless steel offers exceptional resistance to corrosion and rust, ensuring the long-term integrity and aesthetic appeal of the reservoir. The 30-gallon volume is appropriately sized for medium to heavy-duty applications, providing sufficient hydraulic fluid capacity to prevent overheating during sustained operation and to adequately supply the system's various functions.
Integrated into the reservoir assembly are several essential components for system health and monitoring. An in-tank return filter assembly, with a rating of 25 microns and a flow rating of 50 GPM, ensures that hydraulic fluid returning from the system's actuators is thoroughly cleaned of contaminants. This continuous filtration is crucial for protecting sensitive hydraulic components, such as proportional valves and cylinders, from abrasive wear and premature failure. A filler-strainer breather cap assembly is also included, serving a dual purpose: it allows for clean replenishment of hydraulic fluid and provides a filtered air exchange mechanism, preventing external contaminants from entering the reservoir while accommodating fluid level changes due to temperature fluctuations and cylinder movement. For operational monitoring, a shielded sight temperature gauge is provided, allowing operators and maintenance personnel to quickly assess the hydraulic fluid level and temperature, vital parameters for optimal system performance and longevity. A magnetic drain plug is also incorporated, designed to capture ferrous metallic particles that may circulate within the hydraulic fluid, thus providing an early indicator of potential component wear and aiding in preventative maintenance.
All critical hydraulic directional valves and spreader controls are strategically mounted directly on the tank within a dedicated valve enclosure. This enclosure, featuring a latching stainless steel lid, provides robust protection for these vital components against environmental elements, physical damage, and tampering. The centralized location of the valves significantly streamlines the plumbing layout, reducing the amount of hydraulic hose required and minimizing potential leak points. This consolidated design not only simplifies initial installation but also makes future service and maintenance tasks much more straightforward, as all control valves are readily accessible in one protected area.
The system's port configurations are standardized for reliability and ease of connection:
- Auger/Chain Port: 3/4 SAE ORB (-12) for secure, leak-free connection to the spreader's material conveyor.
- Spinner Port: 1/2 SAE ORB (-8) for precise, leak-free connection to the spreader's spinner motor.
- Inlet Port: 3/4 SAE ORB (-12), serving as a crucial connection point for the hydraulic pump.
- Suction Port: 2 NPT, designed for high-flow suction from the reservoir, equipped with a 150-micron suction filter with a 49 GPM flow rating to protect the pump from larger particulate contamination.
- Outlet Port: 2 NPT, facilitating the main return flow to the reservoir.
- Work Ports: 3/4 JIC (-12), providing versatile connection points for various hydraulic implements and auxiliary functions.
This 30 Gallon Central Hydraulic System without GPS is expertly engineered for a diverse array of medium to heavy-duty applications, ensuring exceptional performance and reliability in the most challenging operational environments. Its comprehensive suite of features, including electric-hydraulic proportional controls, robust stainless steel construction, integrated filtration, and comprehensive safety measures, position it as a superior choice for fleets prioritizing efficiency, durability, and simplified maintenance. While optional GPS functionality for advanced ground speed control is not included in this specific model, its manual proportional control for spreading offers operators precise command over material application, making it a highly effective and adaptable solution for many vocational tasks. For those requiring enhanced load holding capabilities, the recommendation to integrate P.O. checks or counterbalance valves underscores a commitment to safety and operational integrity.
