Product Description
OEM Yale handle return spring for electric pallet jack control handle; ensures resistance and automatic return of operating lever to neutral. Constructed from high-tensile spring steel, designed to fit Yale electric lift truck series. Includes closed-loop ends for positive engagement. Genuine part number YL 640846879.
Specifications
Part Numbers
| Part Number | YL 640846879 |
| Manufacturer Part Number | YL640846879 |
| Alternate Part Number | YT640846879 |
Material & Construction
| Material | High-tensile spring steel |
| Engagement Type | Closed-loop ends |
Application
| Fitment | Yale electric lift truck series |
Frequently Asked Questions
Q: What is the purpose of the YL 640846879 handle return spring?
A: The YL 640846879 is an OEM Yale handle return spring that ensures the control handle lever automatically returns to neutral position after operator release. This spring provides resistance during handle movement and is critical for safe electric pallet truck operation. Loss of spring tension can result in unintended movement or drift after the lever is released.
Q: What material and construction features define this return spring?
A: The YL 640846879 is constructed from high-tensile spring steel with closed-loop ends for positive engagement on the control handle pivot assembly. The steel composition ensures durability under repeated flex cycles and provides consistent return force over the service life of the equipment. This genuine Yale part meets OEM specifications for spring rate and fatigue resistance.
Q: How do I identify if this spring needs replacement?
A: Signs of spring failure include: handle lever not returning to neutral without manual assistance, sluggish or delayed return movement, visible rust or corrosion on the spring, or a broken or separated loop end. If the handle movement becomes inconsistent or requires more operator force than normal, the spring may have fatigued and lost tension. Replacement is recommended at the first sign of malfunction.
Q: Is this spring compatible with all Yale electric pallet truck models?
A: The YL 640846879 is designed for Yale electric lift truck series. However, spring attachment points and handle assembly designs may vary across different model generations and control systems. Verify your equipment model and cross-reference the part number on your current spring assembly before ordering. Using an incorrectly sized spring can result in poor handle performance.