TRAILER GUIDELINES
Tires for light trucks have other markings besides those found on the sidewalls of passenger tires.
LT: The “LT” indicates the tire is for light trucks or trailers.
ST: An “ST” is an indication the tire is for trailer use only.
Max. Load Dual kg (lbs) at kPa (psi) Cold:This information indicates the maximum load and tire pressure when the tire is used as a dual, that is, when four tires are put on each rear axle (a total of six or more tires on the vehicle).
Max. Load Single kg (lbs) at kPa (psi) Cold:This information indicates the maximum load and tire pressure when the tire is used as a single.
Load Range: This information identifi es the tire’s load- carrying capabilities and its inflation limits.
Tire Safety Tips
Slow down if you have to go over a pothole or other object in the road.
DO NOT run over curbs or other foreign objects in the roadway, and try not to strike the curb when parking.
Check tire inflation pressure weekly during use to insure the maximum tire life and tread wear.
DO NOT bleed air from tires when they are hot.
Inspect tires for uneven wear patterns on the tread, cracks, foreign objects, or other signs of wear or trauma.
Remove bits of glass and foreign objects wedged in the tread.
Make sure your tire valves have valve caps.
ALWAYS check tire pressure on tow vehicle and trailer before towing. Check tire pressure at least once a month.
DO NOT overload tow vehicle. Check the tire information and loading placard for safe allowable tire loading conditions.
Tire Repair
The proper repair of a punctured tire requires a plug for the hole and a patch for the area inside the tire that surrounds the puncture hole. Punctures through the tread can be repaired if they are not too large, but punctures to the
sidewall should not be repaired. Tires must be removed from the rim to be properly inspected before being plugged and patched.
Replacing Worn or Damaged Tires
Replace the tire before towing the trailer if the tire treads have less than 1/16 inch depth or the telltale bands are visible. Check inflation pressure weekly during use to insure the maximum tire life and tread wear. A bubble, cut or bulge in a side wall can result in a tire blowout. Inspect both side walls of each tire for any bubble, cut or bulge; and replace a damaged tire before towing the trailer.
Table B below will help pinpoint the causes and solutions of tire wear problems.
Table B. Tire Wear Troubleshooting
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| Center Wear | Over inflation. | Adjust pressure to particular |
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| load per tire manufacturer. | ||
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| Edge Wear | Under inflation. | Adjust pressure to particular |
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| load per tire manufacturer. | ||
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| Side Wear | Loss of camber | Make sure load does not |
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| exceed axle rating. | ||
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| or overloading. | ||
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| Align wheels. | |
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| Toe Wear | Incorrect | Align wheels. |
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| Cupping | Check bearing adjustment | |
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| and balance tires. | ||
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| Flat Spots | Wheel lockup and | Avoid sudden stops when |
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| tire skidding. | possible and adjust brakes. | |
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WARNING
ALWAYS wear safety glasses when removing or installing force fitted parts. DO NOT attempt to repair or modify a wheel.
DO NOT install an
pieces of the rim to explode (break off) with great force and cause serious eye or bodily injury.
LT12 SERIES LIGHT TOWER • OPERATION MANUAL — REV. #12 (01/20/09) — PAGE 65