Product Description
BUTTERFLY SWITCH ASSEMBLY
Frequently Asked Questions
Q: What equipment does the YL 507019502 butterfly switch assembly fit?
A: The YL 507019502 is a Yale-branded butterfly switch assembly for electric lift trucks. Confirm your equipment model, voltage (AC or DC), and serial range match this OEM part number before ordering.
Q: What function does a butterfly switch assembly perform?
A: A butterfly switch controls operator input commands such as lift, lower, travel forward, and travel reverse. The butterfly design refers to the control pad ergonomics. It converts mechanical input into electrical signals for the lift truck control system.
Q: What causes a butterfly switch assembly to fail?
A: Failure occurs from repetitive button wear, moisture and dirt contamination inside the switch, electrical contact corrosion, or impact damage from drops. Failed switches become unresponsive, sticky, or activate intermittently.
Q: Can I use a different brand switch assembly instead of the YL 507019502?
A: Aftermarket butterfly switches must have identical electrical specifications, connector type, voltage rating, and control function mapping. Using an incompatible switch risks equipment malfunction or operator safety. Verify compatibility before substituting.
Q: Is the YL 507019502 the same as the YL 507019501 switch?
A: No. The YL 507019502 is a butterfly switch assembly while the YL 507019501 is a register type switch assembly. These are different control designs for different equipment models or applications. Do not interchange them.
Q: What should I do if the YL 507019502 switch is unresponsive?
A: Check connector contact cleanliness and voltage at the switch terminals. If voltage is present and the switch does not respond, the internal contacts are likely failed and the switch assembly must be replaced.