T: +8615609213525
E: 15829336298@139.com
E: 15829336298@139.com
Room 1212-G107, Unit 2, Building 1, Block A, Shenglong Plaza, No. 80 Weiyang Road, Weiyang District, Xi'an City, Shaanxi Province
| Quantity: | |
|---|---|
FHB400
Shacman
| Attribute | Details |
|---|---|
| Part Name | Parallel Hydraulic Retarder / Fluid Coupling Retarder |
| Model Number | FHB400 |
| Brand/Manufacturer | FAST Gear (Shaanxi Fast Automobile Transmission) |
| Maximum Braking Torque | 4000 N·m (Newton-meters) |
| Input Speed (Max) | Up to 5000 RPM (some configurations rated at 2500 RPM depending on gear ratio and application) |
| Control Method | Electronically controlled, pneumatically actuated (ECU + solenoid valves + air pressure) |
| Working Medium | Special hydraulic retarder oil – Compatible oils: Mobil ATF 220 or FAST-approved equivalent |
| Oil Capacity (Fill Volume) | Approximately 6.5 liters |
| Cooling System | Water-cooled via heat exchanger connected to the engine’s main cooling circuit |
| Net Weight | ~53 kg |
| Mounting Type | Parallel installation between transmission and propeller shaft (non-integral design) |
| Structure Features | - Rotor-stator separable structure - Low drag loss when disengaged (high efficiency) - Compact, lightweight design |
| Operating Voltage | 24V DC (standard truck electrical system) |
| Communication Interface | CAN bus (typically J1939 protocol) for integration with ECU, ABS, instrument cluster |
| Origin | Shaanxi Province, China |
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Professional Installation Required
Must be installed by trained technicians familiar with driveline alignment, air/electrical connections, and cooling circuits.
Ensure Proper Cooling Circuit Connection
Connect the retarder’s heat exchanger to the engine’s main cooling system using appropriate hoses and clamps. Ensure no leaks or blockages.
Use Correct Hydraulic Oil Only
Fill with FAST-approved or equivalent fluid (e.g., Mobil ATF 220). Never substitute with engine oil or generic transmission fluid.
Maintain Minimum Engine Speed (≥1500 RPM)
For optimal cooling and braking performance, operate the engine above 1500 RPM when using the retarder. At lower speeds (e.g., idle ~800 RPM), water circulation slows, risking overheating and automatic shutdown within seconds.
Avoid Use in Neutral (N) or Clutch Depressed
In neutral, coolant pump speed drops → reduced heat dissipation → thermal overload protection activates quickly.
Emergency Braking Is Safe
In urgent situations (dry, straight road), you can engage the highest retarder level directly — it will not damage the unit, but expect rapid temperature rise.
Regular Maintenance Schedule
Follow these intervals:
Oil Change: Every 60,000 km or 1 year (whichever comes first)
Filter Replacement: As needed (if equipped)
Inspect Seals & Hoses: Check for leaks, cracks, or swelling
Clean Heat Exchanger: Remove dust/debris buildup affecting cooling efficiency
Winter Operation Precautions
Use antifreeze coolant mix (e.g., 50% ethylene glycol) to prevent freezing.
Drain if stored in sub-zero environments for extended periods (only if specified).
CAN Bus Integration & Diagnostics
Ensure correct communication with vehicle ECU and dashboard.
Use diagnostic tools (e.g., FAST TechTool) to read fault codes and calibrate settings.
Do Not Modify Control Logic or Bypass Safety Systems
Tampering may lead to overheating, component failure, or loss of braking capability.
