Product Description
Solenoid
Frequently Asked Questions
Q: What is the CL 999639 solenoid used for?
A: The CL 999639 solenoid is an electromagnetic control device used on Clark electric lift trucks to actuate motors, switches, or mechanical functions. When energized by the control circuit, it opens or closes connections to manage motor power and directional control.
Q: How does the CL 999639 differ from the CL 999634 solenoid?
A: The CL 999639 and CL 999634 are separate part numbers indicating different solenoid designs, coil specifications, or mounting configurations. They are not interchangeable. Verify the exact part number required for your Clark equipment model before ordering.
Q: Which Clark lift truck models require the CL 999639 solenoid?
A: The CL 999639 is specified for particular Clark electric lift truck models or control circuits. Check your equipment documentation or control schematic to confirm this solenoid matches your truck configuration and voltage requirements.
Q: What maintenance does a CL 999639 solenoid require?
A: Solenoids require minimal maintenance. Keep the electrical connections clean and dry, ensure mounting hardware remains tight, and monitor for corrosion on terminals. Do not apply lubricants to solenoid coils or contacts. Replace if performance degrades.
Q: What indicates the CL 999639 solenoid has failed and requires replacement?
A: Replace the solenoid if motor fails to engage despite good battery voltage and intact wiring, if control button produces humming or buzzing without motor response, if solenoid is hot to touch during operation, or if electrical continuity testing shows open circuits. These indicate internal coil failure or contact damage.