Product Description
PISTON & CYLINDER ASSY
Frequently Asked Questions
Q: What is a piston and cylinder assembly in a pallet jack?
A: The piston and cylinder assembly (also called a hydraulic or mechanical cylinder) is the component that converts handle pressure into vertical lift force. When the operator pumps the handle, the piston rod extends inside the cylinder to raise the fork platform. This assembly is the power source of a manual pallet jack.
Q: What are the symptoms of a failing piston and cylinder assembly?
A: Signs of failure include inability to raise or hold a load, slow or incomplete lifting even after multiple handle pumps, leaking fluid or oil from the cylinder joints, jerky or uneven lift motion, or loss of lift height. These symptoms indicate internal seal wear, rod bending, or loss of hydraulic pressure.
Q: What equipment brands use the 00591-04352-81 piston cylinder assembly?
A: This OEM assembly is compatible with Toyota manual pallet jacks. Crown, Raymond, and other manufacturers may use equivalent units with different part numbers. Verify your equipment model and cylinder bore size before ordering.
Q: What material and construction does this piston cylinder assembly have?
A: The 00591-04352-81 features a steel cylinder barrel with a hardened piston rod and precision seals. Internal components are engineered to resist corrosion and maintain pressure under repeated lifting cycles. The assembly is designed for smooth operation and long service life.
Q: How do I install a new piston and cylinder assembly?
A: Lower the jack fully to relieve all pressure. Locate the cylinder mounting bolts on the frame and linkage. Remove fasteners and disconnect the old cylinder. Position the new 00591-04352-81 assembly in alignment with the mounting points and handle linkage. Install mounting bolts and fasteners. Test lift and lower action before loading.
Q: How often should a piston and cylinder assembly be serviced?
A: Inspect the assembly regularly for leaks or damage. If the jack begins to lose lift pressure or moves slowly, the seals may need replacement. In heavy-use environments, plan for internal seal service every 1 to 2 years. A complete assembly replacement is recommended if seals are worn beyond service or the rod is bent.