Product Description
Load Wheel Assembly
Frequently Asked Questions
Q: What tools do I need to install the SU 329-A load wheel assembly?
A: You will need a 19mm socket wrench for axle bolt removal, a rubber mallet, and an axle puller if the old assembly is seized. No special alignment tools are required. Installation takes 15-20 minutes per wheel. Always disconnect the lift truck battery before beginning work.
Q: How do I properly seat the SU 329-A bearing on the axle?
A: Slide the assembly onto the axle and hand-tighten the bolt until it contacts. Do not force the bearing onto the axle. If resistance is felt, the axle bore may be damaged. Tap gently with a rubber mallet while turning the wheel to ensure the bearing seats evenly. Tighten the bolt to 45-50 foot-pounds. Do not overtighten as this will damage the bearing seal.
Q: What load rating does the SU 329-A assembly provide per wheel?
A: The SU 329-A assembly is rated for 4500 pounds per wheel under normal warehouse conditions on smooth concrete. This assembly uses a 6-inch diameter wheel. Do not use on outdoor surfaces or rough concrete as this reduces bearing life to less than 12 months.
Q: Is the SU 329-A equivalent to any other brand assemblies?
A: Yes. The SU 329-A is cross-compatible with Yale YL-588338762 and Hyster HY 1436542. All three use the same 6-inch wheel diameter, bearing size, and axle bolt pattern. Parts are interchangeable provided your truck was manufactured after 2008.
Q: How often should the SU 329-A bearing be re-greased?
A: Re-grease the bearing every six months or every 500 operating hours, whichever comes first. Use multipurpose bearing grease only. Do not overfill the bearing cavity as excess grease will damage the seal and allow dirt contamination. One-quarter ounce of grease per bearing is the proper amount.
Q: What symptoms indicate the SU 329-A bearing has failed?
A: Listen for grinding or growling noise during truck operation. Feel for excessive heat in the wheel after running. Manually spin the wheel and check for grinding sensation indicating internal damage. If any of these symptoms appear, replace the assembly immediately. Continuing operation risks axle damage and loss of steering control.