Product Description
HYDRAULIC PUMP
Frequently Asked Questions
Q: What is the AC 4911818 hydraulic pump?
A: The AC 4911818 is a replacement hydraulic pump for electric lift trucks. It pressurizes hydraulic fluid to power the lift mast, tilt functions, and load handling mechanisms. This pump is a core component of the truck hydraulic system.
Q: Which electric lift trucks use the AC 4911818 hydraulic pump?
A: The AC 4911818 pump is compatible with electric lift trucks from Crown, Toyota, Raymond, Yale, and Hyster. Confirm your truck model, lift capacity, and system pressure rating before ordering. Pump displacement and pressure specs must match your truck.
Q: What are the displacement and pressure specifications for the AC 4911818?
A: The AC 4911818 has specific displacement in cubic centimeters per revolution and a maximum operating pressure rating in PSI. Verify exact specifications from your truck documentation. Using an incorrect pump displacement or pressure rating will cause poor performance or system damage.
Q: What symptoms indicate the AC 4911818 hydraulic pump needs replacement?
A: Common symptoms include slow or weak lift speed, inability to reach full height, hissing or noise from the pump, lack of tilt response, and visible leaking from the pump housing. These indicate internal wear, seal failure, or loss of pump displacement.
Q: How long does the AC 4911818 hydraulic pump last?
A: Pump lifespan typically ranges from 3000 to 8000 operating hours depending on duty cycle, hydraulic fluid condition, and system maintenance. Heavy-use environments, contaminated fluid, or inadequate filtration accelerate wear. Regular hydraulic fluid and filter changes extend pump life.
Q: Are there cross-reference part numbers for the AC 4911818?
A: Yes. The AC 4911818 may cross-reference with OEM hydraulic pump part numbers from Crown, Toyota, Raymond, and Yale. Always verify the cross-reference and confirm displacement and pressure specifications match your truck exactly.