Product Description
Load Wheel
Frequently Asked Questions
Q: What does the XL designation mean for the SU S9138-XL load wheel?
A: The XL designation indicates an extra-large or extended-duty configuration compared to standard S9138 models. XL wheels are typically used in heavy-load or extended-range lift truck applications. Consult your Superior lift truck manual for the exact diameter and bore specifications, as XL models vary by equipment series.
Q: Can I substitute a standard SU S9138 wheel for an SU S9138-XL?
A: No. Substituting a standard S9138 for an S9138-XL wheel will result in misalignment, premature bearing failure, and reduced lift truck load capacity. Always verify the exact part number on your equipment nameplate before ordering. Mixing wheel sizes in the same truck is not permitted.
Q: What tools and safety precautions are needed to replace the SU S9138-XL?
A: Use a hydraulic jack and safety blocks to support the lift truck frame. Wear safety glasses and work gloves. Have adjustable wrenches or sockets ready. Larger XL wheels may require two technicians for safe handling. Never work under a supported truck without safety blocks in place. Allow the truck to cool if recently in use.
Q: How do I diagnose if my SU S9138-XL wheel is failing?
A: Signs of failure include audible grinding or squeaking when the truck moves, visible flat spots or chunks missing from the tread, wobbling that changes as you turn the steering wheel, or the truck pulling to one side without brake engagement. Test by spinning each wheel by hand; it should rotate smoothly for 3 to 5 revolutions with no binding.