Product Description
PU AA-19 is a precision steel ball manufactured by Pallet Mule, designed for use in manual pallet jack hydraulic units AA5000 and AA5500. This component functions as a valve check element in the hydraulic circuit, ensuring reliable operation of Pallet Mule manual pallet jacks. It is included in official repair seal kits and is fabricated from case-hardened steel for durability in industrial service.
Compatibility: Fits pallet jacks made by Pallet Mule, model AA5000. SKU: PU AA-19
Specifications
Material & Construction
| Material Specification | Precision-machined steel, case-hardened |
Part Numbers
| OEM Part Number | PU AA-19 |
| Manufacturer Part Number | PU AA-19 |
| Compatible Models | Pallet Mule AA5000 hydraulic unit, Pallet Mule AA5500 hydraulic unit |
Frequently Asked Questions
Q: What is the PU AA-19 and where is it used in the pallet jack?
A: The PU AA-19 is a precision steel ball manufactured by Pallet Mule for use as a valve check element in manual pallet jack hydraulic pump assemblies. It prevents backflow of hydraulic fluid in the lift circuit.
Q: What material and specification does the PU AA-19 meet?
A: The PU AA-19 is precision-machined steel with a case-hardened surface finish. This hardening provides the durability needed to function reliably under repeated pressure cycling in the pump valve circuit.
Q: Which Pallet Mule models require the PU AA-19 steel ball?
A: The PU AA-19 is designed for both Pallet Mule AA5000 and AA5500 manual pallet jack hydraulic units. It is included in official repair and seal kits for these models.
Q: What symptoms indicate the PU AA-19 ball check element is failing?
A: If the pump will not build pressure, leaks fluid from the pump housing, or the load drifts down slowly when the jack is raised and held, the valve ball element may be damaged or stuck. Inspection or replacement is needed.
Q: Is the PU AA-19 included in pump seal kits?
A: Yes. The PU AA-19 steel ball is included as a component in official Pallet Mule hydraulic pump repair kits. When performing a full pump rebuild, the ball will be part of the complete kit assembly.