The key to a vehicle’s stable operation during hot weather lies in proper routine maintenance. To ensure the job is done right, one must first have the right tools; FAW Jiefang has compiled this summer maintenance guide specifically for heavy-duty trucks. Drivers should use this checklist before hitting the road to ensure a safer journey.
Driving in high-temperature environments places immense strain on engine heat dissipation. The cooling system acts as the engine’s dedicated “air conditioner,” so maintenance must not be neglected.
1. Don’t Neglect Coolant Checks
Always check the coolant level before departure and top it up if necessary. Never use plain water instead of specialized coolant; doing so can cause radiator corrosion and lead to the engine overheating (or “boil-over”).
At the same time, inspect the radiator fins and clear away debris such as willow catkins or mud. Use compressed air or a low-pressure water spray—directed with the airflow—to keep the cooling passages unobstructed. After a long-distance drive, do not shut off the engine immediately; let it idle for a while to help it cool, and consider opening the hood to accelerate heat dissipation.
2. Engine Oil is the Engine’s “Lifeblood”
High temperatures reduce oil viscosity and weaken lubrication performance, accelerating wear on internal engine components. It is recommended to use summer-grade engine oil and regularly check both the oil level and the oil’s condition. When topping up, prioritize using the same brand and model; avoid mixing different oil specifications to prevent compromising performance.
3. Diesel/Gasoline Vehicles: Prevent Evaporation and Vapor Lock
Fuel evaporation increases significantly in high heat; do not overfill the fuel tank, as thermal expansion can cause internal pressure to rise. High temperatures can also easily trigger “vapor lock” in the fuel supply system, leading to issues like power loss or fuel delivery interruption. If you experience sluggish acceleration while driving, pull over promptly to inspect the fuel system.
4. Gas-Powered Vehicles: Prioritize Seal Checks and Safety Measures
For gas-powered engines, preventing gas leaks is the top priority. Thermal expansion and contraction increase the risk of leaks at pipeline connections. After every refueling, carefully inspect critical components—such as the gas cylinder valve, pipeline connections, and pressure-reducing valve—using soapy water or a specialized leak detector to check for bubbles and identify any potential leaks.
If maintenance or refueling is required after the vehicle has been driven, ensure the entire vehicle has cooled down sufficiently before proceeding; this prevents high-temperature components from igniting any leaking gas.
5. Monitor tire pressure and condition
Driving on hot road surfaces with excessive tire pressure significantly increases the risk of a blowout. Check tire pressure regularly. If tires are hot after a long-distance drive, never splash cold water on them to cool them down; rapid temperature fluctuations can damage the tire’s internal structure and further increase the likelihood of a blowout.
6. Promptly clear flammable items from the cab
Temperatures inside a sealed cab can soar rapidly under intense sunlight. Avoid placing items such as lighters, power banks, carbonated drinks, or reading glasses on the center console where they are exposed to direct sunlight. These items can easily trigger a vehicle fire, so make sure to store or remove them promptly.
Maintain your vehicle scientifically and operate it properly. Keep these key summer maintenance tips for heavy-duty trucks in mind and conduct comprehensive vehicle inspections. This ensures your Jiefang heavy-duty truck gets through the scorching summer smoothly, keeping every driver’s journey cool, comfortable, safe, and worry-free.
