Product Description
RL 4-00076 Ram Piston Assembly is a hydraulic ram piston and seal kit for Rol-Lift manual pallet jacks, engineered as a direct replacement for OEM RL 4-00076 and superseding RL KIT-5145-TPTUM, featuring a steel piston, U-cup and wiper seal assembly, and compatibility with standard Rol-Lift manual pallet jack hydraulic systems.
Specifications
Hydraulic/Pneumatic
| Seal Installation Orientation | U-cup installed with gap facing pressure side; wiper seal with lip facing outward |
Material & Construction
| Piston Material | Steel |
Part Numbers
| Manufacturer Part Number | RL 4-00076 |
| Cross-Reference Part Numbers | Supersedes RL KIT-5145-TPTUM |
| OEM Part Number | RL 4-00076 |
| Supersedes | RL KIT-5145-TPTUM |
Frequently Asked Questions
Q: What components are included in the RL 4-00076 Ram Piston Assembly?
A: The RL 4-00076 is a complete piston and seal kit that includes a steel piston, U-cup seal, and wiper seal. This assembly is engineered as a direct replacement for the OEM part and supersedes the older RL KIT-5145-TPTUM.
Q: Which Rol-Lift pallet jack models use the RL 4-00076?
A: The RL 4-00076 is designed for Rol-Lift manual pallet jacks with hydraulic ram assemblies. Verify your equipment serial range and model designation before ordering, as this piston assembly must match your specific hydraulic cylinder bore.
Q: What is the material composition of the RL 4-00076 piston?
A: The RL 4-00076 piston is constructed from steel, engineered to withstand the pressure cycles and wear demands of manual pallet jack operation. The U-cup and wiper seals are elastomer compounds designed for hydraulic fluid compatibility.
Q: How should the seals be oriented when the RL 4-00076 is in service?
A: The U-cup seal must be installed with the gap facing the pressure side of the piston. The wiper seal must be positioned with its lip facing outward to prevent external contamination from entering the hydraulic cylinder.
Q: What does the RL 4-00076 supersede?
A: The RL 4-00076 supersedes the older cross-reference number RL KIT-5145-TPTUM. If you have equipment currently using the older kit, the RL 4-00076 is the direct replacement for maintenance and repairs.
Q: When should the RL 4-00076 piston assembly be replaced?
A: Replace the RL 4-00076 if you experience slow lift speed, reduced holding pressure, external hydraulic leaks at the piston rod, or if the pallet jack no longer achieves rated load capacity. These symptoms indicate seal wear or piston scoring.