Product Description
Potentiometer
Frequently Asked Questions
Q: What does the BJ 1120-340004-00 potentiometer do in an electric pallet jack?
A: The BJ 1120-340004-00 is a potentiometer (variable resistor) used in the control circuit of Big Joe electric pallet jacks. It measures lift height or position and sends electrical signals to the motor controller to stop lifting at the correct height or adjust power output during operation.
Q: What is the OEM part number for this potentiometer?
A: The OEM part number is BJ 1120-340004-00. No cross-reference or superseding part numbers are currently documented. Always order using this exact SKU to ensure you receive the correct component.
Q: What failure symptoms indicate a bad potentiometer?
A: A faulty potentiometer may cause the electric pallet jack to stop lifting prematurely, not stop at the correct height, or fail to lift at all. The jack may also jerk or hesitate during lifting if the potentiometer is providing inconsistent signals to the control board.
Q: Can the BJ 1120-340004-00 be repaired?
A: No. Potentiometers are sealed electronic components and cannot be repaired. Once faulty, the entire unit must be replaced with a new BJ 1120-340004-00 potentiometer to restore proper lift control.
Q: How long does a potentiometer typically last on Big Joe electric pallet jacks?
A: Potentiometers typically last 5 to 10 years depending on the frequency of equipment use and operating environment. Dusty or wet conditions may shorten lifespan. Regular maintenance of electrical connections helps extend potentiometer life.