Product Description
Yale YL 550090866 is an OEM replacement pump piston for manual hydraulic systems used in YA55 series pallet jacks. Designed for compatibility with 5500 lb capacity Yale YA55 manual pallet truck models, this high-strength steel piston forms a critical part of the hand-operated hydraulic lifting mechanism.
Specifications
Material & Construction
| Construction Material | High-strength steel |
Part Numbers
| OEM Part Number | YL 550090866 |
| Compatible Models | Yale YA55 manual pallet jack |
Frequently Asked Questions
Q: What is the YL 550090866 pump piston and what does it do?
A: The YL 550090866 is an OEM replacement pump piston designed for the manual hydraulic lifting system in Yale YA55 series pallet jacks. It is a critical component that generates hydraulic pressure when the pump handle is operated.
Q: What models and capacity jacks is this piston compatible with?
A: The YL 550090866 is engineered for Yale YA55 series manual pallet jacks with 5500 lb lifting capacity. Do not use on different capacity models or manufacturers without verifying dimensional and operational compatibility first.
Q: What material is this pump piston constructed from?
A: The YL 550090866 is manufactured from high-strength steel to withstand repeated pressurization cycles and provide reliable hydraulic performance throughout the life of the pallet jack.
Q: What symptoms indicate the pump piston needs replacement?
A: Replace if the pallet jack fails to build pressure, loses hydraulic fluid through the pump, requires excessive handle strokes to lift, or if the pump handle feels loose or unresponsive during operation.