Product Description
HYDRAULIC PUMP
Frequently Asked Questions
Q: What is the displacement and pressure rating of the YL 518818807 hydraulic pump?
A: The YL 518818807 is a variable displacement axial piston pump designed for Yale electric lift trucks. Verify the cubic centimeters per revolution (cc/rev), maximum pressure rating, and flow capacity against your equipment specifications to ensure compatibility.
Q: Which Yale lift truck models use the YL 518818807 hydraulic pump?
A: The YL 518818807 is compatible with specific Yale electric lift truck models from designated production years. Cross-reference your truck serial number, tonnage rating, and mast height to confirm this pump matches your equipment.
Q: What are the port sizes and connection type for the YL 518818807 pump?
A: The YL 518818807 pump has specific SAE flange and port thread sizes for inlet and outlet connections. Verify inlet and outlet diameters, SAE flange size, and pressure port threads match your existing hydraulic lines and manifold before ordering.
Q: What materials and construction does the YL 518818807 pump use?
A: The YL 518818807 contains ductile iron or aluminum alloy casing, hardened steel internal components, and bronze or brass bushings. This construction resists pressure cycling, thermal stress, and contaminated hydraulic fluid exposure.
Q: What failure symptoms indicate the YL 518818807 pump needs replacement?
A: Common signs of pump failure include sluggish lift performance, excessive noise or grinding, inadequate pressure buildup, erratic pressure spikes, or visible leakage from the pump housing. These indicate internal wear or seal failure requiring replacement.
Q: What is the typical service life for the YL 518818807 hydraulic pump?
A: Pump lifespan depends on hydraulic fluid cleanliness, operating pressure consistency, duty cycles, and maintenance intervals. With proper filtration and fluid changes every 500-1000 hours, the pump typically lasts 3000-5000 operating hours before internal wear requires rebuilding or replacement.