Product Description
Brush assy.
Frequently Asked Questions
Q: What is the AC 4911481 brush assembly?
A: The AC 4911481 is a brush assembly for electric lift truck motors. Brushes conduct electrical current to the motor armature and are consumable components that wear during normal operation. This assembly includes the brush holder and replacement brushes.
Q: Which electric lift trucks use the AC 4911481 brush assembly?
A: The AC 4911481 brush assembly is compatible with electric lift trucks from Crown, Toyota, Raymond, Yale, and Hyster. Confirm your specific truck model and motor type. Brush assemblies are motor-specific, so verify fitment before ordering.
Q: What symptoms indicate the AC 4911481 brushes need replacement?
A: Common symptoms include reduced lift speed, weak motor performance, electrical sparking inside the motor, audible noise from the motor, or erratic lift behavior. If the motor runs intermittently or sluggishly, worn brushes are likely the cause and replacement is necessary.
Q: How long do the AC 4911481 brushes last?
A: Brush life typically ranges from 1000 to 3000 operating hours depending on load, duty cycle, and environmental conditions. Heavy-use trucks wear brushes faster. Perform visual inspections annually and replace when brushes are worn below the minimum thickness specification.
Q: What materials are used in the AC 4911481 brush assembly?
A: Brushes are typically carbon or graphite composite material designed for electrical conductivity and wear resistance. The brush holder is metal, usually aluminum or steel with spring components to maintain brush contact pressure against the motor commutator.
Q: Are there equivalent part numbers for the AC 4911481 brush assembly?
A: Yes. The AC 4911481 may cross-reference with OEM brush assemblies from Crown, Toyota, Raymond, and Yale. Check your truck service manual or parts diagram to verify cross-references. Using the correct equivalent brush assembly ensures motor performance and longevity.