Product Description
AC303, Piston, Pump
Compatibility: Fits pallet jacks made by Noblelift, model AC55. SKU: AC303
Frequently Asked Questions
Q: What does the AC303 piston do in a Noblelift AC55?
A: The AC303 is the pump piston that creates hydraulic pressure when the handle is pumped. It seals the pump cylinder and transfers hydraulic fluid to raise the load.
Q: What material is the AC303 piston made from?
A: The AC303 piston is precision-machined from hardened steel to withstand repeated pressure cycles and maintain seal integrity against the pump cylinder walls.
Q: When should I replace the AC303 piston?
A: Replace the AC303 if pumping action feels loose or spongy, if the jack loses pressure over time, or if hydraulic fluid leaks from the pump. Worn pistons cause slow or incomplete lifting.
Q: Is the AC303 piston compatible with models other than the Noblelift AC55?
A: The AC303 is designed exclusively for the Noblelift AC55 pump assembly. Bore diameter and seal tolerances are model-specific.
Q: How long does the AC303 piston typically last?
A: With normal use in moderate-duty warehouse environments, the AC303 piston lasts 3-7 years. Heavy-duty or high-volume lifting shortens lifespan due to increased pressure and seal wear.
