Product Description
The CR 54015-004 is a hydraulic U-cup rod or piston seal for Crown PTH manual pallet jacks with later-style hydraulic units (serial number 3-183850 and above). This direct-replacement seal retains hydraulic oil within the pump assembly and is constructed from hydraulic-grade elastomer for reliable high-pressure sealing performance. Essential maintenance component for Crown hydraulic systems.
Specifications
Material & Construction
| Material | Hydraulic-grade elastomer |
| Finish | Natural finish, non-coated elastomer |
Part Information
| Part Number | CR 54015-004 |
| Compatible Equipment | Crown PTH manual pallet jack, later-style hydraulic unit (serial number 3-183850 and higher) |
| Function | Rod or piston seal for hydraulic pump assembly |
Frequently Asked Questions
Q: What is the CR 54015-004 and what pallet jack models does it fit?
A: The CR 54015-004 is an OEM hydraulic U-cup rod or piston seal for Crown PTH manual pallet jacks. It is designed for later-style hydraulic units with serial numbers 3-183850 and above. Do not use on earlier hydraulic unit versions, as fitment and performance may be compromised.
Q: What is the material and construction of the CR 54015-004?
A: The CR 54015-004 is manufactured from hydraulic-grade elastomer finished in natural (non-coated) form. This elastomer composition provides reliable high-pressure sealing performance and resists degradation in contact with Crown hydraulic fluids.
Q: What is the function of the CR 54015-004 seal in the hydraulic system?
A: The CR 54015-004 functions as a dynamic seal on the rod or piston within the hydraulic pump and cylinder assembly. It prevents hydraulic oil from leaking past the moving rod, maintaining system pressure and protecting the mechanical components from fluid loss and contamination.
Q: How do I verify that my Crown PTH jack uses the CR 54015-004 and not an earlier seal?
A: Locate the serial number on the Crown PTH hydraulic unit. If the serial number is 3-183850 or higher, the CR 54015-004 is the correct OEM seal. Earlier hydraulic units use different seal part numbers. Always match the seal to both the serial range and the hydraulic unit style.