AC 4906486

Frequently Asked Questions

Q: What does the AC 4906486 brush spring set do?
A: The AC 4906486 is a brush spring set for Alice Chalmers electric lift truck motors, designed to maintain proper brush-to-commutator contact in DC motor assemblies. Worn springs reduce electrical contact and motor performance.

Q: How do I know if the AC 4906486 springs need replacement?
A: Signs include loss of motor power, intermittent operation, excessive brush wear, or sparking at the motor. Discoloration or permanent deformation of the springs indicates they have lost tension and should be replaced immediately.

Q: What is the material composition of AC 4906486?
A: The AC 4906486 brush spring set is manufactured from tempered steel springs engineered for consistent tension and electrical conductivity in DC motor brush assemblies. Springs maintain uniform pressure on carbon brushes to ensure reliable commutation.

Q: How often should AC 4906486 brush springs be replaced?
A: Brush springs typically last 2-4 years depending on equipment usage and brush wear patterns. Replace as part of routine motor maintenance when brushes wear down, usually every 1000-2000 operating hours. Always replace springs when replacing brushes.

Q: Does the AC 4906486 fit other lift truck brands?
A: The AC 4906486 is specific to Alice Chalmers motor assemblies. While similar brush spring sets exist for Crown, Toyota, or Yale electric equipment, dimensions and specifications differ. Verify your motor model and part number before ordering.

Q: Can I replace just one spring or must I replace the entire set?
A: Replace the complete AC 4906486 set to ensure all springs provide equal tension. Mismatched spring pressures cause uneven brush wear, poor electrical contact, and motor inefficiency. Always install all new springs from the same set together.