his item is a complete accelerator pedal assembly designed for electric Clark forklift trucks that utilize a SEVCON brand motor controller. It is a critical interface component between the operator and the vehicle’s drive system.
Primary Function:
The assembly converts the physical movement of the operator’s foot (pressing the pedal) into a precise electronic signal. This signal is sent to the SEVCON controller, which then regulates the power delivered to the drive motor, thereby controlling the forklift’s speed and acceleration smoothly and responsively.
Key Components of the Assembly:
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Pedal & Lever Mechanism: The physical pedal that the operator presses. It is spring-loaded to return to the neutral/off position when released.
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Potentiometer (The “Brains”): This is the core component. It is a variable resistor that changes its electrical resistance based on the pedal’s angle. As you press the pedal, the resistance changes in a linear fashion, sending a corresponding voltage signal (e.g., 0.5V to 4.5V) to the controller.
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This specific part (656/12027) often uses a “Dunker” or similar style of rotary potentiometer, which is a known, serviceable type.
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Mounting Bracket & Hardware: The sturdy metal frame that allows the entire assembly to be securely bolted to the forklift’s floorboard or firewall.
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Electrical Connector: A weather-proofed multi-pin connector that links the potentiometer’s wiring to the forklift’s main harness and, ultimately, to the SEVCON controller.
Compatibility & Applications:
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Controller Brand: Specifically designed to work with SEVCON motor speed controllers (e.g., Series 6, S Series, Millipak, etc.).
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Vehicle Manufacturer: Primarily for Clark electric forklift models.
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Vehicle Type: Used in electric cushion tire and electric pneumatic tire forklifts.
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Common Use: This is a common replacement part for older Clark electric forklifts where the original accelerator pedal or its internal potentiometer has failed.
