How many kilometers should a truck undergo four-wheel maintenance?

[AlexanderAnn]

Trucks require four-wheel maintenance every 30,000 kilometers. The main items of four-wheel maintenance include four-wheel alignment, dynamic balance testing, checking tire pressure, and inspecting tire wear conditions. Regular four-wheel maintenance can enhance driving safety and reduce abnormal tire wear. The following are the details of four-wheel maintenance: 1. Cleaning: The wheel hub bearings may accumulate dust, water, and other debris during normal driving, which need to be cleaned out; 2. Adjustment: After a period of use, the four-wheel bearings of the vehicle will experience wear, and the overall clearance may change, requiring adjustment of tightness to prevent excessive clearance that could cause tire deviation during driving; 3. Lubrication: Bearings require grease for lubrication. Due to the effects of temperature, dust, and moisture, the performance of the grease may degrade and fail to provide lubrication, necessitating regular lubrication; 4. Replacement: All components wear out, and bearings are no exception. Once they reach the end of their service life, they need to be replaced.

[HazelLee]

Truck wheel maintenance depends on the specific situation. Generally, light trucks need servicing every 20,000 kilometers or so, while medium and heavy-duty trucks require more frequent attention, with maintenance needed around every 15,000 kilometers. Vehicles that frequently haul heavy loads over long distances need even earlier maintenance, especially for components like brake pads and bearings that are prone to wear. If you notice uneven wear on the tires, it's often a sign of misalignment. Neglecting wheel maintenance in such cases not only shortens tire lifespan but also increases fuel consumption. Last time I chatted with Old Zhang from the fleet, he mentioned that regular wheel system maintenance can extend tire life by an extra 3,000 to 4,000 kilometers, saving enough money to cover nearly half a year's diesel costs.

[Priscilla]

I've been driving ten-wheelers for over a decade, and you really can't rigidly follow the mileage for four-wheel maintenance. The first 20,000 kilometers are a must for new vehicles, but after that, it depends on the road conditions. For trucks running construction sites daily with constant chassis jolts, you'll hear bearing noises by 7,000-8,000 km. Highway-dominant vehicles can stretch beyond 20,000 km. The key is regularly checking wheel hub temperature—especially after unloading—if it's scalding hot, inspect the bearings immediately. I've seen too many people try to save a few thousand on maintenance, only to spend tens of thousands replacing entire axle sets later—a huge loss.

[DeEverly]

Having driven seven or eight types of trucks, the most intuitive way to judge is by listening to the sound. If the cab shakes significantly or there's a clicking noise when turning, it's likely a bearing issue. The regular maintenance cycle is between 15,000 to 30,000 kilometers, but for vehicles hauling construction materials, it's essential to check the brake drums after every trip. Last year, during the 30,000-kilometer maintenance of the 6.8-meter truck I was driving, the bearing grease had dried into powder. The mechanic said if we had waited a few more days, the entire wheel would have been ruined. Those driving during the rainy season need to be extra cautious, as grease emulsifies quickly after driving through deep water.

[JayceAnn]

Four-wheel maintenance cycles require careful economic calculation. For regular vans, it's done every 20,000 kilometers at a cost of 600-700 RMB, but this can save the expense of two tires. Our fleet's rule for 4.2-meter blue-plate trucks: urban delivery vehicles get serviced every 20,000 km, intercity runners at 18,000 km, and dirt haulers must be maintained every 12,000 km. The key is monitoring brake pad thickness - replace when worn down to 5mm. Always supervise mechanics during seal ring replacement; last year one truck lost all its hub oil due to unsealed wheels, nearly causing a wheel detachment.

[BeauFitz]

Veteran heavy truck drivers all know that the maintenance cycle for wheel hubs is directly tied to the load capacity. For trucks carrying standard loads, a 30,000-kilometer service interval might be acceptable, but those frequently overloaded must shorten the cycle. The front axle bearings are particularly vulnerable—overloading by just a few tons can cause noticeable wear after 2,000 kilometers. The simplest method is to incorporate regular checks: every 5,000 kilometers, use a pry bar to check for any play in the wheels. During maintenance, insist on high-temperature grease, as regular grease can liquefy under brake heat. I’ve seen repair shops use subpar bearings that seized after just a few hundred kilometers, nearly causing a major accident.