Product Description
Potentiometer
Frequently Asked Questions
Q: What is the FLP-135879 potentiometer used for?
A: The FLP-135879 is an electronic potentiometer (variable resistor) used in the control circuits of electric pallet jacks and lift trucks. It monitors load position, travel distance, or tilt angle and sends feedback signals to the motor control module.
Q: What are the electrical specifications for the FLP-135879?
A: The FLP-135879 is a 5 kilohm linear potentiometer with a total resistance range of 0 to 5000 ohms. It operates on 12 volt or 24 volt direct current systems and has a 1/4 inch threaded shaft suitable for direct-drive mounting on pump or motor assemblies.
Q: Which electric lift truck models use the FLP-135879 potentiometer?
A: The FLP-135879 is used in Yale, Jungheinrich, and Linde electric pallet jacks manufactured between 2012 and 2022. Confirm your equipment model and control system voltage before ordering, as potentiometers are voltage-specific and not interchangeable.
Q: What are the failure symptoms of a defective FLP-135879 potentiometer?
A: Failure symptoms include erratic lift or lower speed, the motor not responding to joystick inputs, the control system displaying position errors, inconsistent tilt behavior, or the truck shutting down mid-cycle. These indicate the potentiometer is not sending accurate resistance signals.
Q: How long does the FLP-135879 potentiometer last?
A: The FLP-135879 typically lasts 4 to 6 years under normal operating conditions. Continuous duty or frequent extreme travel cycles can reduce lifespan to 2 to 3 years. Replacement is necessary when the control system can no longer calibrate position or when intermittent signal loss occurs.
Q: What cross-reference part numbers are equivalent to the FLP-135879?
A: The FLP-135879 is equivalent to Yale 580047221, Jungheinrich part 51122800, and Linde potentiometer 0009922821. Always verify resistance range and shaft diameter match your equipment before substituting cross-reference parts.