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XCMG Power Steering Assembly / Hydraulic Steering Gear 453402152 NXG3411RTW141
FUNCTION
1. Hydraulic Power Steering Control: Translates the driver's steering wheel input into hydraulic signals, controlling the extension and retraction of the steering hydraulic cylinders to execute left and right vehicle turns. Designed for large-tonnage heavy-duty dump trucks, it ensures light and reliable steering operation.
2. Heavy-Duty Steering Assist: Maintains effortless steering wheel operation even when the vehicle is fully loaded or navigating complex terrains-such as mines and construction sites-thereby significantly reducing driver fatigue and enhancing both driving comfort and safety.
3. Load-Sensing Function: In conjunction with the steering oil pump and priority valve, this feature automatically adjusts hydraulic flow and pressure based on the steering load. It prioritizes the power required for steering while simultaneously minimizing system energy waste and improving fuel efficiency.
4. Emergency Manual Steering: In the event of an engine shutdown or insufficient hydraulic fluid supply, the driver can manually turn the steering wheel to execute limited emergency steering maneuvers.
5. Multi-Channel Hydraulic Control: Integrates components such as rotary valves and metering pumps to ensure precise flow distribution, supporting the dual-cylinder or multi-cylinder steering systems commonly found in heavy-duty trucks.
Working Principle
1. Steering Wheel Rotation: When the driver turns the steering wheel, it drives the internal rotary spool to rotate, thereby opening the oil circuit. Pressurized oil enters the metering pump; after precisely metering the flow rate based on the steering angle, it is delivered to the steering hydraulic cylinder, actuating the vehicle to execute a left or right turn.
2. Neutral Position: When the steering wheel is not being turned, the valve assembly remains in the neutral position; oil supplied by the pump flows directly back to the reservoir, while the two chambers of the steering cylinder remain sealed, thereby maintaining straight-line travel.
3. Load-Sensing Function: The LS port transmits the steering load pressure signal back to the priority valve, ensuring priority allocation of the flow rate required for steering; any surplus oil is then supplied to other hydraulic components, thereby enhancing overall efficiency.
4. Emergency Mode: In the event of an engine shutdown or a loss of hydraulic pressure, the driver can manually turn the steering wheel to engage a limited manual emergency steering capability.
Advantages
| No. | Performance Advantage | Specific Description |
|---|---|---|
| 1 | Strong Heavy-Load Steering Capability | Designed for large-tonnage dump trucks with large displacement and high strength, providing stable and reliable steering assistance even under full load or harsh mining road conditions |
| 2 | Light and Comfortable Operation | Low steering torque makes the steering wheel very easy to turn, significantly reducing driver fatigue and improving comfort during long working hours |
| 3 | Load Sensing Technology | Works with the priority valve to automatically adjust flow and pressure according to actual steering load, prioritizing steering demand while saving energy |
| 4 | Quick Response and Good Self-Centering | Fast and accurate steering response; the steering wheel returns to center smoothly after release, improving vehicle handling stability and safety |
Interfacing Relationships
Upper End: The input spline shaft connects to the steering column (the steering wheel drives the steering gear via the steering column).
Lower/Side End: Multiple hydraulic ports (P-Inlet, T-Return, A/B-Steering Cylinder Ports, LS-Load Sensing Port) connect via high-pressure hydraulic lines to the steering pump, priority valve, and front-axle steering cylinders.
DETAILS
| DESCRIPTION | Hydraulic Steering Gear | PART NUMBER | 453402152 NXG3411RTW141 |
| WEIGHT |
20KG |
VOLUME |
30 × 20 × 25 cm |
| TRUCK MOLDE | XCMG | QUALITY | Copy,High Copy, OEM,Original |
| MOQ | 1 | WARRANTY | 1 year |
| PAYMENT | TT/WESTEN UNION | SHIPMENT | by air/sea/railway |
| BRAND | SINOSACHS | PLACE OF ORIGIN | JINAN CITY,CHINA |
| STOCK | IN STOCK | APPLICABLE SITE | STEERING |
| PACKAGE | Carton/Woodenbox | PORT OF LANDING | Qingdao Port,China |
Daily Maintenance Suggestions
| Maintenance Item | Maintenance Interval | Specific Content and Recommendations |
|---|---|---|
| Visual & Leak Inspection | Daily (before operation) | Check the steering gear for external oil leaks, loose hose fittings, or damage |
| Steering Wheel Operation Check | Daily / per shift | After starting the engine, turn the steering wheel slowly left and right to check for smooth operation, no abnormal noise, and proper return-to-center |
| Hydraulic Oil Level & Quality Check | Daily (before operation) | Check the steering hydraulic oil tank level and observe whether the oil is emulsified, deteriorated, or contaminated |
| Fastener Check | Every 50–250 working hours | Inspect steering gear mounting bolts, bracket bolts, and hose fittings for looseness and tighten as needed |
| Filter / Strainer Check | Every 500 working hours | Check the steering system filter; replace or clean when pressure difference is too high or when dirty |
| System Air Bleeding Check | After oil change or maintenance | Start the engine and turn the steering wheel slowly left and right several times to bleed air from the system |
| Proper Operation Reminder | During daily use | Avoid holding the steering wheel at full lock for long periods to prevent system overheating and internal leakage |
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