Product Description
Contact
Frequently Asked Questions
Q: What is the CR 078912-001 contact and where is it used?
A: The CR 078912-001 is a stationary electrical contact used in the motor control system of Crown electric lift trucks. Contacts conduct electricity between motor control circuits and the motor windings. A faulty contact will interrupt power delivery and prevent motor operation.
Q: Which Crown truck models use the CR 078912-001 contact?
A: The CR 078912-001 is a Crown OEM contact component for specific motor control assemblies. The exact models that use this part depend on your truck motor specification and electrical configuration. Verify your Crown truck model and control system type before ordering.
Q: What are the electrical specifications for the CR 078912-001?
A: The CR 078912-001 is rated for specific voltage, amperage, and switching frequency based on your Crown truck motor system. Review your truck electrical schematic or control system manual for exact voltage and current ratings. Using contacts with incorrect ratings will cause control system failure.
Q: How do I know if the CR 078912-001 contact needs replacement?
A: Symptoms of worn contacts include intermittent motor response, difficulty starting the motor, arcing or burning visible in the control module, or complete loss of motor control. Electrical testing with a multimeter can confirm contact resistance is within specification.
Q: Is the CR 078912-001 different from the CR 078912-002?
A: Yes. The CR 078912-001 is a stationary fixed contact, while the CR 078912-002 is a moveable contact. These components work together in the motor control relay or contactor. Do not interchange them. Both parts may need replacement if the control system malfunctions.
Q: What causes contact wear and failure in Crown trucks?
A: Electrical contacts wear due to arcing, oxidation, and repeated switching cycles. Dust and moisture in the control module accelerate oxidation. Overloading the truck motor causes excessive arcing and contact erosion. Keep the motor control area clean and avoid exceeding rated load limits.