Original Excavator Cabin Parts E200B E320 Hydraulic Pedal Valve

Original Excavator Cabin Parts Travel Pressure Plate Foot Valve Seat E200B E320

Located at the bottom of the operator cabin, the travel pedal control valve assembly is a pilot hydraulic control device manipulated by foot. It handles machine traveling and hydraulic breaker work, allowing efficient operation distribution: hands control main joysticks and feet take charge of auxiliary functional actions.
Core Functions
• Travel Control (Most Widely Adopted): Left‑right foot pedals correspond to two side tracks. Pedal depression generates forward or reverse travel, with pressing depth deciding travel speed.
• Attachment Control System: Activates and adjusts working status of breakers, quick couplers, hydraulic shears and other attachments.
• Precision Auxiliary Motion: For some excavator variants, it fine‑adjusts boom and stick movements or works with joysticks for synchronized compound actions.
• Neutral Safety Reset Function: Automatically resets to neutral when foot pressure is removed, shutting pilot pressure supply to avoid mis‑operation risks.
Working Principle
• As a pilot control unit, it provides low‑pressure signal output rather than directly driving travel motors.
• Idle state: Automatically returns to neutral with zero pressure output, machine stays motionless.
• Activated state: Spool movement transmits hydraulic signals to the main multi‑way valve for travel motor regulation.
• Deactivated state: Spring‑driven reset stops all controlled motions immediately.
Common Faults
• Track deflection during traveling: One‑side pedal valve internal leakage or spool sticking
• Pedal fails to spring back: Broken return spring or clogged spool core
• Weak and slow travel: Insufficient pilot pressure or worn valve components
• Oil leakage occurrence: Degraded sealing elements or cracked valve body

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