Product Description
Toyota OEM compression spring (part number 00591-04815-81) for manual pallet jack handle and linkage assemblies. Designed for proper return/action in HPT series hand pallet trucks.
Specifications
Part Numbers
| OEM Part Number | 00591-04815-81 |
| Manufacturer Part Number | 00591-04815-81 |
| Compatible Equipment | Toyota Hand Pallet Jack (HPT Series, including HPT28U model) |
Frequently Asked Questions
Q: What is compression spring 00591-04815-81 designed for?
A: Compression spring 00591-04815-81 is a Toyota OEM part that provides return action in the handle and linkage assemblies of manual pallet jacks. The spring allows the handle to return smoothly to its original position after lowering or raising operations, ensuring safe and controlled operation.
Q: Which Toyota pallet jack models use the 00591-04815-81 compression spring?
A: Compression spring 00591-04815-81 is designed for Toyota HPT series hand pallet trucks, including the HPT28U model. Verify your exact equipment model against the Toyota parts diagram or contact us with your serial number to confirm this spring is correct for your jack.
Q: What are the symptoms of a broken or weak 00591-04815-81 spring?
A: A failed spring causes the handle to not return smoothly or to stick in the down position. You may feel sluggish handle operation or hear creaking sounds from the linkage. If the spring is completely broken, the handle remains in whatever position you place it. Replace the spring immediately to restore safe operation.
Q: How do you replace the 00591-04815-81 compression spring?
A: Remove the handle assembly from the pump body by unbolting the attachment points. Locate the spring within the linkage mechanism. Compress the spring using a spring compressor tool or by hand (carefully) and remove the retaining pin or bracket. Remove the old spring, install the new 00591-04815-81 spring, secure the retaining pin, and reinstall the handle assembly.
Q: What material and specifications does the 00591-04815-81 spring have?
A: The 00591-04815-81 is a steel compression spring heat-treated for durability and designed to withstand repetitive cycling in HPT series jacks. The spring provides consistent return force throughout the life of the jack. It is not adjustable and should not be modified or bent. Replace with the exact OEM part for proper performance.
Q: How often do compression springs need replacement in manual pallet jacks?
A: Springs typically last the life of the pallet jack if operated normally. However, springs can weaken or break if the jack is overloaded, exposed to extreme temperatures, or used with extreme force. Inspect handle operation regularly and replace the 00591-04815-81 spring at the first sign of sluggish or sticking movement. Replacement is inexpensive compared to repair costs from improper linkage operation.