SU 9874-A

Frequently Asked Questions

Q: What is the SU 9874-A load wheel assembly and what equipment does it fit?
A: The SU 9874-A is a load wheel assembly designed for electric lift trucks including pallet jack and reach truck applications. It is compatible with Crown, Toyota, Raymond, Yale, Hyster, Jungheinrich, Linde, Clark, Mitsubishi, CAT, and BT models. The assembly includes the wheel, sealed bearings, and hub structure.

Q: What components are included in the SU 9874-A assembly?
A: The SU 9874-A is a complete load wheel assembly that includes the polyurethane wheel, sealed bearing cartridges, and steel hub. It is a bolt-on replacement unit, not a wheel-only item. All internal bearings are pre-installed and sealed for maintenance-free operation.

Q: How do I install the SU 9874-A as a direct replacement?
A: The SU 9874-A is designed for direct replacement installation. Remove fasteners securing the existing wheel assembly to the lift truck axle or frame. Position the new SU 9874-A assembly in the same location and reinstall fasteners using SAE Grade 8 bolts. Ensure the assembly seats fully and verify smooth wheel rotation before returning equipment to service. Do not overtighten fasteners.

Q: What should I inspect when determining if the SU 9874-A is needed?
A: Replace the wheel assembly when you observe tread wear beyond 1/8 inch, visible cracks or chunking on the tread, flat spots from locked wheels, bearing noise or resistance during rotation, or wobbly movement indicating hub damage. Sealed bearings cannot be relubricated, so noise signals the assembly must be replaced.

Q: Are sealed bearings in the SU 9874-A maintenance-free?
A: Yes, the SU 9874-A features sealed bearing cartridges that are maintenance-free. Do not attempt to disassemble, clean, or lubricate bearings. If bearing noise develops or the wheel becomes difficult to spin, the entire assembly must be replaced. Regular cleaning of debris around the wheel and bearing area is recommended to extend service life.

Q: What is the typical lifespan of the SU 9874-A wheel assembly?
A: Lifespan depends on operating conditions, load weight, floor type, and equipment usage frequency. With standard indoor use and normal maintenance, the SU 9874-A typically performs for 2-3 years before tread wear or bearing wear requires replacement. Harsh conditions, wet floors, or heavy continuous use reduces lifespan. Replace when tread depth falls below 1/8 inch or bearings show signs of wear.