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China Guangzhou Hot Sale Use for Dongfeng Truck Parts 1608Z07-001 Clutch Booster Assembly Spare Chassis 9700511570

The 9700511570 Clutch Servo Assembly is a high-performance, air-over-hydraulic clutch actuator manufactured by WABCO — now part of the ZF Friedrichshafen (ZF Group). This advanced clutch booster serves as the core component in the clutch control system of heavy-duty commercial vehicles, significantly reducing pedal effort required by the driver through pneumatic amplification of hydraulic pressure.

Engineered for precision and durability, this servo unit combines compressed air and hydraulic force to deliver smooth, linear clutch engagement with full diaphragm release. It ensures reliable operation under frequent shifting conditions typical in long-haul transport, urban delivery, and passenger coach applications.

Commonly used across premium European truck and bus platforms such as MAN, DAF, Scania, and others, the 9700511570 provides excellent response, low maintenance needs, and extended service life. Its compact aluminum housing offers high strength-to-weight ratio and corrosion resistance, making it ideal for modern commercial fleets demanding efficiency and driver comfort.
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  • 9700511570

  • Dongfeng

Attribute Specification
Part Number 9700511570
Product Name Clutch Servo Assembly / Pneumatic-Hydraulic Clutch Booster
Function Amplifies clutch pedal force using compressed air to assist hydraulic actuation
Operating Principle Air-Over-Hydraulic (Pneumatic Assist + Hydraulic Output)
Primary Application Heavy-Duty Trucks, Coaches, Buses, Commercial Vehicles
Manufacturer WABCO (now ZF Aftermarket / Commercial Vehicle Solutions)
Housing Material High-Strength Corrosion-Resistant Aluminum Alloy
Internal Components Precision-ground piston, rubber seals, return spring, check valves
Mounting Style Bracket-mounted on chassis frame or transmission tunnel
Compatibility Direct OE replacement for MAN, DAF, Scania, and other European platforms
Standards Compliance ECE R54, ISO 4138, WABCO Technical Bulletin Standards
离合器助力器总成-1


离合器助力器总成-2


Parameter Specification
Maximum Operating Pressure 10.0 bar (145 psi)
Working Media - Compressed air (clean, dry)
- Brake fluid: DOT 3 / DOT 4 / SAE J1703
Effective Stroke (Max) 85 mm
Air Inlet Port (Port 11) M16 × 1.5 threaded
Hydraulic Outlet Port (Port 1–4) M14 × 1.5 threaded
Push Rod Specification Ball-end push rod, Ø12 mm ball diameter
Operating Temperature Range -40°C to +80°C (-40°F to +176°F)
Weight (Approx.) 3.2 kg
Sealing System NBR/FKM (Viton®) seals for oil and temperature resistance
Response Time < 0.3 seconds (fast actuation)
Return Mechanism Integrated return spring
Design Life ≥ 1 million cycles (under normal operating conditions)


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