HUBS
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THIS INFORMATION IS INTENDED AS A REFERENCE SOURCE ONLY. CONSOLIDATED METCO DOES NOT ASSUME ANY LIABILITY IN THE EVENT OF IMPROPER USE OF COMPONENTS. FOR ADDITIONAL INFORMATION VISIT OUR WEB SITE AT WWW.CONMET.COM, OR CALL (800) 425-4827. 5 Year or 500,000 Mile Inspection – Consolidated Metco recommends that all PreSet hub assemblies be disassembled and inspected at 5 years, 500,000 miles, or in conjunction with the second brake service on the vehicle, whichever comes first. Disassemble and inspect the hub and bearing assembly. Anytime a hub is removed, the wheel seal should be replaced. If cone rotation is evident, replace the bearing spacer. Replace other components as necessary. Annual or 100,000 Mile Inspection – Check wheel bearing end play and visually inspect lubrication. If end play is found to be over .006 inch, disassemble and inspect the assembly. Note that the wheel with tire, brake drum, and axle shaft must be removed from the hub to get an accurate endplay reading. If the end play is found to be .006 inch or less and the spindle nut is locked correctly, the spindle nut should not be adjusted or retightened. INSPECTION The ConMet Service Manual for PreSet Hub Assemblies outlines four different levels of inspections that should help identify problems before they result in a catastrophic failure. They are as follows: Driver Pre-Trip – Pay attention for signs of seal leaks as they can be an early indicator of damage inside of the hub resulting in metal debris being generated. The ABS light can be another early indicator of wheel end problems due to excessive endplay in the hub. Both can indicate failure may be imminent. Preventative Maintenance Inspection – With the wheels off of the ground, rotate the wheel and check for any signs of rough bearing operation, noise, or vibration along with Driver Pre-Trip inspection listed above.
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