Shacman Gearbox Retarder Controller DZ93189585443

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​Shacman gearbox Retarder Controller DZ93189585443/H70000-1-FHB400-GZZY1

Function

1.By controlling the flow rate and pressure of the hydraulic oil, the braking force of the brake can be adjusted, thereby achieving a continuously variable speed control braking effect.

2.A hydraulic retarder converts the vehicle's kinetic energy into heat energy through the frictional flow of hydraulic fluid, thus assisting in deceleration. By using a hydraulic retarder, the vehicle's main brakes (disc brakes) experience significantly less wear due to reduced braking frequency, extending the lifespan of the brake pads and discs.

3.It typically works in conjunction with the vehicle's ABS system. When the vehicle undergoes emergency braking or the ABS system is activated, the hydraulic retarder automatically engages or disengages to prevent loss of control. When the vehicle detects that the wheels are about to lock up, the hydraulic retarder adjusts the oil resistance through a control valve, helping the wheels regain rotation and preventing the vehicle from losing control.

Description                                                                                                                                                                                                                           

Symptoms

1. Brake failure: The vehicle's brakes fail while going downhill, or the vehicle is unable to decelerate at high speeds, leading to overheating and brake failure.
2. Abnormal noise: The hydraulic retarder emits an unusual buzzing or vibrating sound.
3. Instrument panel warning: The vehicle's instrument panel displays a hydraulic retarder fault light (Retarder Fault).

Replacement Recommendation

1. This component involves the hydraulic system and electronic control; it is recommended to have it replaced at a professional Howo repair station or a qualified repair shop.
2. Before replacement, the hydraulic retarder unit and brake hoses should be inspected. If the malfunction is due to a leak in the hydraulic system, simply replacing the control valve may not solve the problem.
3. After replacement, the hydraulic retarder system needs to be calibrated to ensure the accuracy of braking pressure and proportional control.

             Shacman gearbox Retarder Controller DZ93189585443, use for the FAST gearbox H70000-1-FHB400-GZZY1.
             A high-performance hydraulic retarder controller designed for commercial vehicles (trucks/buses/engineering vehicles), compatible with multiple models to deliver safe, efficient, and intelligent braking!

              Application Scenarios​​

              ✅ ​​Long Downhill Sections​​: Sustained braking force minimizes brake "heat fade" risks.
              ✅ ​​Heavy-Duty Transport​​: Precise control ensures stability for overloaded vehicles.
              ✅ ​​Hazardous Material Transport​​: Advanced safety mechanisms meet stringent industry standards.

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