Product Description
Load Wheel Assembly
Frequently Asked Questions
Q: What is the difference between SU 254-XL and SU 254-XL-A?
A: The SU 254-XL-A is a complete pre-assembled wheel and bearing unit, while the SU 254-XL is the wheel only. The -A version comes ready to bolt on with no additional bearing installation or lubrication required. Choose -A for faster installation and lower labor cost; choose the wheel alone if you already have compatible bearings in stock.
Q: Can I use the SU 254-XL-A assembly on a truck that originally came with the standard SU 254-A?
A: No, do not substitute. The -A assemblies are designed for specific frame geometries. The wider XL tread can contact the truck frame, steering column, or load platform. If your truck frame does not have clearance for the 4.5 inch tread, the assembly cannot be retrofitted without frame modification.
Q: Does the SU 254-XL-A require any tools for installation?
A: Installation requires a 0.75 inch socket, a small adjustable wrench, and a hydraulic jack. Lift the truck and remove the fasteners holding the old assembly. Slide the new SU 254-XL-A onto the axle and torque the retaining nut to 40 foot-pounds. Verify rotation and re-torque after five operating hours.
Q: What happens if I mix the SU 254-XL-A assembly with standard SU 254-A assemblies on the same truck?
A: Mixing will create uneven ride height because the XL has a wider stance. This causes handling instability and uneven load distribution across wheels. The truck will track to the side of the wider wheels. Do not mix XL and standard assemblies; all four wheels must be the same specification.
Q: Is the SU 254-XL-A bearing seal replaceable if it fails in the field?
A: The SU 254-XL-A bearing seals are not field-replaceable. If water or debris enters the bearing housing, the entire assembly must be replaced. If your warehouse has high-moisture conditions, inspect the assemblies monthly and wipe the bearing housing clean to extend seal life.
Q: Can the SU 254-XL-A handle uneven warehouse floors without wheel damage?
A: The wider XL tread provides better shock distribution on uneven surfaces and reduces the risk of wheel damage from small curbs or floor transitions. However, impacts on potholes or severe floor defects can still cause bearing damage. Do not use the truck to cross severe floor obstacles; the assembly will not protect against impacts over 0.5 inch high.