Product Description
SY43456 is an OEM-grade helical compression spring designed for electric lift trucks and AC Series pallet jacks, functioning as a handle return mechanism. The spring replaces multiple major OEM part numbers, ensuring broad compatibility across Toyota, Crown, Yale, and Hyster assemblies. Constructed from high-carbon steel for durability, SY43456 installs within the hydraulic pump assembly and is retained by roll pin and cap. Cross-reference validation assures suitability for variant truck models
Specifications
Part Numbers
| Cross-Reference Part Numbers | Replaces TOYOTA 00591-32169-81, CROWN 074909, YALE 220016735, HYSTER 3013281, E-PARTS 41333, LPM 622-1207, 7003983 |
| OEM Part Number | SY43456 |
| Equivalent Part Numbers | TVH SY43456 |
Frequently Asked Questions
Q: What is the SY43456 spring and what does it do?
A: The SY43456 is an OEM-grade helical compression spring that functions as a handle return mechanism in electric lift trucks and AC Series pallet jacks. It operates within the hydraulic pump assembly to restore the control handle to its neutral position after operation.
Q: Which OEM brands does the SY43456 spring replace?
A: The SY43456 replaces springs from multiple major OEM brands including Toyota (00591-32169-81), Crown (074909), Yale (220016735), Hyster (3013281), and LPM (622-1207). This broad compatibility eliminates the need to stock separate springs for different truck models.
Q: What material is the SY43456 spring made from?
A: The SY43456 is constructed from high-carbon steel, which provides the spring rate consistency and fatigue resistance needed for thousands of hydraulic pump cycles. This material ensures reliable handle return functionality over the equipment lifespan.
Q: How is the SY43456 spring retained in the assembly?
A: The SY43456 spring is retained within the hydraulic pump assembly using a roll pin and cap. These retention components secure the spring in place and prevent it from becoming dislodged during normal equipment operation.
Q: What cross-reference part numbers are equivalent to SY43456?
A: The SY43456 has verified equivalents including TVH SY43456, TOYOTA 00591-32169-81, CROWN 074909, YALE 220016735, HYSTER 3013281, E-PARTS 41333, LPM 622-1207, and LPM 7003983. Cross-check your equipment documentation to confirm which reference number applies to your truck.
Q: What happens if the SY43456 spring fails?
A: A failed or weakened SY43456 spring results in the control handle not returning to neutral position after use. This creates an unsafe condition and prevents proper equipment operation. Replacement is necessary to restore safe handle return functionality.
