Do you have a question related to alignment, steering, handling, braking, fuel economy, tires, safety and maintenance of your RV? Robert Henderson, the president of Henderson’s Line-Up Brake and RV and SuperSteer/SuperStop products in Grants Pass, Oregon, is available to answer questions from readers. You may send your questions by e-mail to editor@rvlife.com.

Question:
Robert,

How often should the wheel bearings be repacked on a class A motorhome or any motorhome? Does it make any difference if it is a class A or class C and does the chassis type make any difference?

Thanks!
Jim Tibbles

Answer:
Hey Jim,
It depends on the type of hubs that are being used.  Most Class C motorhomes have grease-type bearings that run hotter than an oil type bearing hubs.  On some class A motorhomes, you upgrade to an oil seal and run 80-90 weight gear oil in them. It eliminates the frequent packing (most grease hubs require 15 to 25 K service per manufacturer instructions). Oil-filled hubs can run an easy 50 to 100 k without service, provided you keep the oil at the proper level and don’t overheat or otherwise contaminate the fluid.  The wheel bearing adjustment is critical on an oil hub because the oil can leak by a seal if the Adjustment gets loose. We always use  full synthetic Amsoil in the hubs. Hope that helps.

Robert Henderson, president of Henderson’s Line-Up, Brake and RV and SuperSteer/SuperStop products of Grants Pass, Oregon, regularly answers questions on RV steering, braking, handling, fuel economy, tires, safety and maintenance online at the Chassis Solution blog at rvlife.com.  Send questions by e-mail to editor@rvlife.com.