Product Description
LIFT PRESELECTOR
Frequently Asked Questions
Q: What does the PR 144790-003 lift preselector control?
A: The PR 144790-003 is a lift preselector valve that allows operators to preset the desired lift height. It mechanizes or electronically locks the mast at a target position, reducing operator fatigue and improving load placement accuracy. Common on Crown, Toyota, Raymond, and Yale models.
Q: What equipment models use the PR 144790-003 preselector?
A: The PR 144790-003 is compatible with mid-range electric pallet jacks and stand-up rider lift trucks. Verify the equipment control handle type (pushbutton, proportional joystick, or lever) and system pressure rating match this component before ordering.
Q: What are the operating specifications of the PR 144790-003?
A: The preselector operates on standard equipment hydraulic system pressure, typically 2000 to 3000 PSI. Electrical input is 24V or 48V DC depending on your equipment. The valve preset range and mechanical detents determine available lift heights.
Q: What failure symptoms indicate a bad preselector?
A: Symptoms include loss of preset height memory, mast drifting past the selected position, failure to stop at preselector setting, or solenoid clicking without hydraulic response. Verify hydraulic fluid level and cleanliness first, as contamination is a common cause of preselector stiction.
Q: Does the PR 144790-003 have equivalent part numbers?
A: The PR 144790-003 is our part designation. OEM equivalents exist from Crown, Toyota, and Raymond under their respective part numbering systems. Confirm solenoid count, port size, and pressure rating before substituting with alternate preselector valves.
