Product Description
Valu-Jack VJ 55F147 pump piston is a machined steel hydraulic component engineered for the 5500-2 manual pallet jack hydraulic unit. Precision ground for sealing, it functions as the primary force-generating element within the hydraulic assembly and is compatible with standard seal kits and associated subcomponents.
Compatibility: Fits pallet jacks made by Valu-Jack, model 5500-2 Hydraulic Unit. Alternate model: 55002 Hydraulic Unit; 5500 2 Hydraulic Unit. SKU: VJ 55F147
Specifications
Material & Construction
| Surface Finish | Precision ground for hydraulic sealing |
Part Numbers
| Manufacturer Part Number | VJ 55F147 |
| OEM Part Number | VJ 55F147 |
| Compatible Models | Valu-Jack 5500-2 hydraulic unit |
Frequently Asked Questions
Q: What is the VJ 55F147 pump piston used for in a Valu-Jack pallet jack?
A: The VJ 55F147 is a machined steel hydraulic component that functions as the primary force-generating element within the hydraulic pump assembly. As the piston moves within the cylinder, it draws hydraulic fluid on the intake stroke and forces fluid under pressure to lift the load on the delivery stroke.
Q: Which Valu-Jack models are compatible with the VJ 55F147 pump piston?
A: The VJ 55F147 is designed for Valu-Jack model 5500-2 Hydraulic Unit, including alternate model designations 55002 Hydraulic Unit and 5500 2 Hydraulic Unit. Verify your exact hydraulic unit model before ordering.
Q: What material is the VJ 55F147 pump piston made from?
A: The VJ 55F147 is manufactured from machined steel engineered for durability and precision fit within the hydraulic cylinder. The surface is precision ground for hydraulic sealing, ensuring a tight fit with seal rings and preventing internal leakage.
Q: What does precision ground finish mean for the VJ 55F147?
A: Precision ground finish means the piston surfaces have been honed to tight tolerances and smooth finish to create an effective seal with O-rings and wiper elements. This prevents hydraulic fluid from bypassing the piston, which would result in loss of lifting pressure and reduced jack performance.
Q: When should the VJ 55F147 pump piston be replaced?
A: Replace the VJ 55F147 if the pallet jack loses lifting power, responds slowly to the handle lever, or if hydraulic fluid leaks from the pump area. Worn pistons allow fluid to bypass the seals, reducing system pressure. The piston may also require replacement if the cylinder bore is damaged and cannot maintain proper seal contact.
Q: Is the VJ 55F147 pump piston compatible with aftermarket seal kits?
A: The VJ 55F147 is compatible with standard seal kits and subcomponents designed for Valu-Jack 5500-2 hydraulic units. The precision ground surface provides reliable sealing when used with O-rings, wipers, and other hydraulic seals rated for the 5500-2 model.