Prevent landing gear issues in semi-trailers by maintaining lubrication, avoiding excessive force, protecting against rust, and regularly inspecting for bent legs, crank issues, or debris.
The landing gear is a critical yet often overlooked part of a semi-trailer. It provides stability when the trailer is not attached to a truck, supporting significant weight during loading and unloading. However, due to frequent exposure to rough terrain and heavy loads, landing gear issues are common in the trucking industry. Here are five prevalent landing gear problems and tips on how to avoid them.
The gearbox, located on the landing gear's crank side, converts manual force into the mechanical motion needed to raise or lower the legs. When gears within the box wear down or break, the landing gear can become inoperable.
Ensure the landing gear is adequately lubricated every few months to avoid gearbox failures. Use high-quality gear oil or grease to maintain smooth operation. Keep the gearbox free of dirt and debris by inspecting it regularly and cleaning it as needed. Avoid using excessive force when cranking, as it can strain the gears.
Bent or misaligned landing gear legs can arise from improper loading practices or parking on uneven surfaces. When the weight distribution is uneven, one leg can bear more load than the other, causing bending or misalignment over time.
Make it a habit to park on level ground whenever possible and distribute weight evenly inside the trailer. When dealing with rough terrain, place wooden blocks or stabilizing pads under the legs to provide a solid, level foundation.
Corrosion is a leading issue for landing gear, especially for trailers frequently exposed to wet or salty environments. Rust weakens metal components, reducing the structural integrity of the landing gear and making it more susceptible to other problems like bending or breaking.
To combat rust, regularly inspect the landing gear for signs of corrosion. Apply a protective coating or paint to exposed metal surfaces and use anti-rust spray where needed. If the trailer operates in regions with heavy road salt, wash the landing gear thoroughly after exposure to salty roads.
The handle or crank mechanism, which allows for manual raising and lowering of the landing gear, can also face issues. A damaged handle, loose connections, or a broken crank mechanism can render the landing gear unusable.
Avoid excessive force when cranking, and ensure the handle and crank assembly are in good condition before use. Periodically tighten loose fittings and replace worn parts before they lead to more significant problems. If the handle becomes bent, replace it immediately to prevent stress on other components.
Occasionally, landing gear legs may extend or retract slowly or even get stuck entirely. This issue can be caused by several factors, including mechanical binding, lack of lubrication, or internal damage to the gear components.
Ensure the landing gear is kept clean and well-lubricated. Before and after each trip, check for any visible debris or foreign objects around the landing gear assembly. If you notice slow movement, address it immediately by greasing the gears and inspecting the mechanism for blockages.
Proper maintenance and regular inspections are key to avoiding problems with semi-trailer landing gear. By following these tips, truck owners and operators can significantly extend the lifespan of their landing gear and reduce downtime caused by equipment failures. Remember, preventive care goes a long way in keeping your semi-trailer safe and road-ready.
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