Product Description
Load Wheel Assembly
Frequently Asked Questions
Q: What does the XL designation mean on the SU S9138-XL-A?
A: The XL designation indicates an extended or oversized wheel assembly, typically featuring a wider tread width or larger diameter compared to the standard S9138-A model. This larger footprint provides enhanced load distribution and stability in heavy-duty material handling applications. Verify your truck frame can accommodate the wider wheel dimensions before installation.
Q: Can I swap the SU S9138-XL-A wheel on a truck that previously used the standard S9138-A?
A: Not without verification. The XL version has different outside diameter and tread width specifications that may not fit your axle configuration or brake assembly. Installing an incompatible wheel size can cause steering issues, brake drag, and suspension strain. Contact your equipment manufacturer or parts supplier to confirm fitment before substitution.
Q: What maintenance should I perform on the SU S9138-XL-A wheel assembly?
A: Inspect bearing grease levels monthly (if greaseable bearing type), rotate wheels every 500 operating hours to promote even wear, and check for play or wobble indicating worn bearings. Clean wheels weekly to remove dirt and debris that can accelerate tread wear. After 1000 hours or annually, remove and inspect the wheel hub for cracks or corrosion.
Q: What is the maximum load rating for the SU S9138-XL-A?
A: Load rating depends on truck model, axle capacity, and total number of wheels carrying the load. The wheel itself must be verified against your specific truck frame rating. Do not assume XL designation means higher load capacity without consulting your equipment manual. Exceeding rated load will accelerate bearing and wheel failure.