Product Manual

Owner’s Manual
Instructions for Installation and Maintenance of
Ultra-Tow Bearing Protector.
Safety – During Installation
• Read manual. Do not allow anyone to install this bearing protector that has not read this Owner’s
Manual.
• Review safety rules. Before towing, review the instructions for safe towing. Failure to follow these
instructions may result in serious injury to the operator or bystanders.
• Eye protection. Always wear safety glasses or goggles during installation.
• Clean area. Make sure to keep the work area clean. Contaminates or water inside the hub will cause
premature failure and possible wheel separation.
• Grease. Use a high-quality NLGI Grade #2 grease. It is important NOT to mix different types of grease
soap thickeners. Mixing Lithium Complex thickener type grease with a Barium, Calcium, Clay, or
Polyurea soap-based thickener agent will cause adverse effects. This may include causing the two greases
to harden, separate, become acidic, or pose other hazards and damage to the bearings.
Safety During Towing
• Read instructions. Review towing safety instructions in your towing vehicle manual.
• Securely attached. Check trailer hitch for signs of wear.
• Tires. Be sure tires are fully inflated and in good repair before towing. When adding air to tires, do not
over-inflate -- serious injury could occur if tire explodes.
• Loading the trailer. Load the trailer so that the tongue weight is approximately 10% of the total load of
the trailer.
• Overloading. Make sure the trailer load does not exceed the load ratings for the trailer components. This
includes tires, axles, hubs, ball coupler, safety chains, and trailer design
• Lug Nuts. Check lug nut torque after 10 miles, 25 miles, 50 miles, and 250 miles.
• Trailer Lights. Make certain the brake lights, side marker lights are functional prior to towing the trailer.
• Trailer height. Adjust the tow vehicle tow height to ensure the trailer is being towed level.
• Added length. Be aware of the added length of the trailer.
• Under the influence. Never tow a trailer while under the influence of alcohol, drugs, or medication.
• On public roads. If towing on a public road, make sure to comply with all local, state, and federal towing
requirements. It is the sole responsibility of the purchaser to obtain licensing, trailer lights, safety chains
or signage, as needed to comply.
• Unattended. Turn off the towing vehicle before leaving the trailer unattended.
Safety – After use
• Periodic maintenance. Perform periodic maintenance as directed in this manual to keep the trailer hub in
safe working condition.
Item Number
Hub Size 1.98in. 1.781in. 2.328in.
Bearing Protector
5712940 5712941 5712942
Vinyl Cover
(Sold Separately)
5712944 5712946 5712946
WARNING
Carefully read and make sure you understand the following safety information before installing
and using this bearing protector.
Improper use or maintenance of the bearing protector can result in serious injury to
the operator or bystanders.
Vinyl Cover
(Sold Separately)