Spring

Frequently Asked Questions

Q: What is the function of the A000036533 spring in material handling equipment?
A: The A000036533 is a tension spring used in hydraulic relief valve assemblies and load-holding circuits. It returns pressure valves to their neutral position when hydraulic pressure is relieved, ensuring safe operation and preventing uncontrolled descent.

Q: What are the specifications for this spring?
A: The A000036533 is a chrome-plated high-carbon steel spring with a working load rating of 250 pounds per inch of compression. Natural length is 3.75 inches, compressed length under load is 1.5 inches. Wire diameter is 0.25 inches with 8 active coils.

Q: How do I diagnose a failed spring?
A: A failed A000036533 will cause the lift to lower slowly without operator control or fail to hold load at mid-height. You may hear hissing sounds from the hydraulic circuit. Visual inspection shows permanent deformation, rust pitting on the chrome surface, or broken coils. Replace immediately.

Q: What is the expected lifespan of this spring?
A: Under normal operating cycles, the A000036533 has a service life of 7 to 10 years. Cycles exceeding design pressure or poor maintenance reduce lifespan to 3 to 5 years. Corrosive environments accelerate chrome coating failure and reduce longevity by 40 percent.

Q: What cross-reference numbers apply to this spring?
A: The A000036533 corresponds to Hyster part number 1312657 and Raymond part number 307A206. Ensure the load rating and coil count match before substituting. Springs with similar dimensions but different wire diameters will not perform correctly.

Q: Can this spring be cleaned and reused after removal?
A: Springs that have been compressed and remain in service develop stress changes in the material structure. Reusing a removed spring after cleaning is not recommended. The spring cannot be reliably reset to original tension. Always install a new A000036533 during maintenance.