Product Description
JT PT2748A-024 is an OEM check ball for Jet A, L, and J Series manual pallet jacks, constructed from hardened carbon steel, 14 mm diameter, used in hydraulic pump assemblies.
Compatibility: Fits pallet jacks made by Jet, model AJL. SKU: JT PT2748A-024
Specifications
Material & Construction
| Material Specification | Hardened carbon steel |
| Surface Hardness | Rockwell C55 minimum |
Part Numbers
| OEM Part Number | JT PT2748A-024 |
Frequently Asked Questions
Q: What is the JT PT2748A-024 check ball?
A: The JT PT2748A-024 is an OEM check ball for Jet A, L, and J series manual pallet jack hydraulic pump assemblies. It is a 14 mm diameter sphere made from hardened carbon steel with a minimum Rockwell C55 surface hardness. The check ball functions as a one-way valve in the pump, allowing hydraulic fluid to flow in one direction only.
Q: Which Jet pallet jacks use the JT PT2748A-024 check ball?
A: This check ball is compatible with Jet Model A, L, and J series manual pallet jacks, including Jet model AJL units. Verify your pump assembly design and model before ordering.
Q: Why is hardened carbon steel used for this check ball?
A: The JT PT2748A-024 is made from hardened carbon steel with a minimum Rockwell C55 hardness because this material withstands repeated seating and unseating cycles without deforming. The hardness prevents wear and maintains a reliable seal against the check valve seat under the high pressures generated during manual pallet jack operation.
Q: What are the symptoms of a worn or damaged check ball?
A: A damaged check ball causes the pallet jack to lose pressure between pumps, fail to hold load height, or exhibit slow descent. The pump cannot build or maintain pressure because fluid bypasses the check valve. Replacement is required to restore normal pump function.