Product Description
Load Wheel Assembly
Frequently Asked Questions
Q: What components are pre-assembled in the SU 673-A kit?
A: The SU 673-A is a complete wheel assembly containing the 5-inch polyurethane wheel, sealed bearing, steel hub, axle spacer, and E-clip retainer. All parts are factory-matched and pre-lubricated. This assembly is ready to install without additional components.
Q: Should I replace SU 673 wheel or upgrade to SU 673-A assembly?
A: If the wheel tread is worn but the bearing is tight with no play, replace the SU 673 wheel alone. If the bearing has play, grinds, or is sealed and cannot be lubricated, replace the entire SU 673-A assembly. Assembly replacement is also recommended if the hub is cracked or dented.
Q: How is the SU 673-A installed and what tools are needed?
A: You need a needle-nose pliers and a hand pump or jack stand. Lift the jack so the wheel is 2 inches off the floor. Remove the old E-clip from the axle with pliers. Slide the old assembly off and slide the new SU 673-A assembly on until it seats against the axle shoulder. Install the new E-clip. Installation takes 5 to 10 minutes per wheel.
Q: Is the bearing on SU 673-A sealed and how long does it last?
A: Yes. The SU 673-A bearing is sealed and pre-lubricated. It does not require re-greasing or maintenance. Average bearing life is 1,500 to 2,500 operating hours. Do not attempt to open the bearing or inject additional lubricant as this will destroy the seal and cause premature failure.
Q: What is the weight and overall size of the SU 673-A assembly?
A: The SU 673-A assembly weighs 2.8 lbs and has a total wheel diameter of 5 inches with a width of 2.5 inches. The axle is 0.75 inches in diameter. Ensure your jack frame pocket can accommodate these dimensions before ordering. Measure your existing wheel assembly for comparison.
Q: What warranty and support is provided with SU 673-A?
A: The SU 673-A includes a 12-month warranty against bearing failure and manufacturing defects from the date of purchase. This warranty does not cover normal wear, damage from overloading, or contamination from dirt or moisture. Keep your receipt and part number for any warranty claims.