This pneumatic hydraulic clutch booster is a core servo component of FAW heavy truck clutch control system, also called clutch servo. It uses compressed air to amplify the hydraulic force delivered from clutch master cylinder, greatly reducing the pedal force required by drivers and realizing smooth separation and engagement of clutch. Adopting high-strength cast aluminum housing and imported composite sealing elements, it features excellent pressure resistance and stable sealing performance under long-haul vibration and temperature fluctuation. Built-in precision valve assembly ensures rapid and sensitive response for clutch operation. Every booster undergoes strict air tightness test and pressure cycle test before delivery. It effectively solves common problems such as heavy clutch pedal, slow disengagement, oil or air leakage, being a key replacement spare part for heavy truck clutch system overhaul.