Product Description
CONTACT KIT
Frequently Asked Questions
Q: What is the TO 00591-39817-81 contact kit used for?
A: The TO 00591-39817-81 is an OEM Toyota contact kit designed for electrical contactors and relay assemblies in Toyota electric lift trucks. It restores electrical switching capability to worn or damaged contacts, ensuring reliable power delivery to lift, tilt, and drive motors.
Q: Which Toyota electric lift truck models use the TO 00591-39817-81 contact kit?
A: The TO 00591-39817-81 is an OEM Toyota part for electric lift trucks. Compatibility depends on contactor model, coil voltage, and electrical specifications. Verify fitment against your equipment documentation or provide your truck model and serial number to our parts team to confirm before ordering.
Q: What materials are used in the TO 00591-39817-81?
A: The TO 00591-39817-81 contact kit uses precious metal alloy contacts bonded to a metal backing plate. This material composition provides superior electrical conductivity, arc resistance, and durability under the high-current switching conditions typical of lift truck motor circuits.
Q: How do I know if the TO 00591-39817-81 contacts are worn?
A: Worn contacts cause intermittent motor response, slow acceleration, reduced motor speed, audible chattering from the contactor, or complete loss of function. Visible pitting, erosion, or dark discoloration on contact surfaces indicates replacement is needed. Testing contactor resistance with a multimeter can also confirm contact degradation.
Q: What is the expected lifespan of the TO 00591-39817-81 contact kit?
A: Under normal intermittent duty in material handling applications, contact kits typically last 500,000 to 1,000,000 electrical cycles. Lifespan varies with operating current, cycle frequency, and system voltage. Regular maintenance and prompt replacement of degraded contacts prevent secondary contactor and motor damage.
Q: Are superseding or cross-reference part numbers available for TO 00591-39817-81?
A: The TO 00591-39817-81 is a Toyota OEM contact kit. No superseding or cross-reference part numbers are documented. For compatibility with other contactor models or brands, provide your equipment specifications to our parts team for sourcing guidance.
