How to maintain a semi-trailer


Release Time:

Mar 10,2025

There is a lot of rain in summer, so pay attention to the paint on the exterior of the car.

Shenghang Special Automobile Manufacturing is a professional manufacturer of cranes, including crane SHS3604, crane SHS3004, crane SHS2004 and other series. 

The most important thing for semi-trailers in summer is the rainy season. In addition to the side slip problem and good driving habits and skills. Brake and tire maintenance is also driving safety. There is a lot of rain in summer, so pay attention to the paint on the exterior of the car. The acidic components in the rain are easy to corrode the car paint, and the car body can be waxed and glazed. Chassis rust prevention. The chassis is closest to the ground and is prone to corrosion, so we must pay attention to the cleaning and rust prevention of the chassis.

Brake oil; the most feared thing when driving is brake failure, and the brake is the most critical part of the car. One of the guarantees for our safe driving, the life of the brake oil is generally two years. We should replace the brake oil at the appropriate time. When changing the brake oil, we must drain the old brake oil and replace it with the new one to avoid mixing the new and the old. After changing, try to brake twice in an open area. Let the air in the oil out.

The possible reasons for the burning of the gearbox are: the lubrication fails and the gears are not lubricated. The high temperature will burn it. In addition, the gears will be stuck and the gearbox will burn. Therefore, you should also pay attention to adding the gearbox oil. The same is true for the steering wheel oil. Sometimes, you will feel that the steering wheel is very heavy. It is best to use semi-synthetic engine oil.

In rainy weather, pay attention to the wiring connection of the car, or rain intrusion. Before driving, be sure to check whether all aspects of the car are normal. Especially the tires, the car tires are the most important link, especially the tire of the steering wheel

Whether it is an all-aluminum semi-trailer or a barn-type semi-trailer, the engine occupies a dominant position in all large trucks and semi-trailer vehicle parts. So how do drivers usually maintain the engine of the semi-trailer?

Maintenance matters

Safe driving is the top priority of a truck's career. To prevent accidents, trailers should be routinely inspected every week or before each transport. The more inspection matters, the better.

1. Check the tires and visually check the tire pressure

Visually check if there is any lack of air or debris attached, and then check if the steel rims are deformed or cracked.

2. Check the tightness of the tire screws

Don't be bothered by the details of tightening the screws with a cannon. You should check each screw one by one to see if it is tightened. Losing a screw halfway is a small matter, and losing a tire can be solved with money, but if an accident occurs, it will be too late to regret it.

3. Just take a look at the suspension system

Check the tightness of all nuts, bolts, and U-bolts, which are all related to whether the tire is worn.

4. Shake the outriggers to make sure they are normal

Check the outriggers by shaking them up and down a few times, and then check if there are any cracks in the welding parts, especially for those who are now running and hanging. You must pay attention to this problem.

5. Touch the wear of the moving parts

Check the box board and the lock rod. Touch the box board hinges, box hooks, piles, container locks and other small parts to see if there are any cracks or breakage.

6. Check all lamps and reflective markers

Check the electrical circuit and see if there is anything abnormal. Turn on the lights to see if there are any broken lights or reflective signs. I believe that some truck drivers have been fined for missing reflective signs on the road.

7. Check the brake connection of the tractor and semi-trailer

Check the pressure gauge on the dashboard of the cab after starting the car to see if it is enough, and then give the brake a foot to try the brake.

8. Listen for air leaks in the brakes

Get off the vehicle and listen for air leaks to test whether the brakes work well.

Maintenance knowledge

For summer maintenance of semi-trailers, we must first pay attention to the anti-skid problem in rainy season. In addition to the driver having good driving habits and skills, the maintenance of brakes and tires is also the key to driving safety. Therefore, we must pay attention to maintenance in daily use. Maintenance can be carried out according to the following steps.

(1) Waxing and glazing the car body. The acidic components in rainwater have strong corrosion to car paint. Therefore, it is best to make the car surface beautiful in rainy season.

(2) Chassis rust prevention. In addition to paint removal, the chassis is close to the ground and is prone to corrosion. Therefore, we must pay attention to the cleaning and anti-rust treatment of the vehicle chassis.

(3) Disinfection of trailers. Clean the interior of the vehicle in rainy season to avoid the harm of various bacteria to the human body.

(4) Check the circuit in time. The vehicle electrical system should be checked frequently in rainy season to avoid leakage faults.

(5) Heat regularly. Turning on the heater can heat the inside of the trailer. When it is sunny, you can park it in the sun and expose it to the sun, open the windows to allow air convection. Regular maintenance of the semi-trailer can effectively extend the service life of the semi-trailer and is very necessary for safe driving.


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