Maintenance parts for Dongfeng fuel-powered trucks refer to core components that need periodic replacement during regular maintenance. They are mainly divided into six categories, covering key systems such as the engine, transmission, braking, and cooling systems:
I. Engine System Maintenance Parts
Oil Filter
Filters metal debris and impurities in engine oil to prevent engine wear. It is generally recommended to replace it every 5,000-10,000 km; the replacement interval can be extended to 20,000 km when using long-life engine oil. Dongfeng original filters adopt high-precision filter paper and are compatible with engine models such as Cummins and Renault.
Fuel Filter (Including Fuel-Water Separator)
Filters moisture and particles in diesel to avoid injector clogging. Diesel filters are usually replaced every 10,000-30,000 km, and the fuel-water separator needs to be checked and drained simultaneously. Some models are equipped with two-stage filters (e.g., FS1212) to improve filtration efficiency.
Air Filter
Blocks dust in the air to protect the engine's air intake system. It is recommended to replace it every 10,000-20,000 km; the interval should be shortened in dusty environments. Original filters use multi-layer composite materials and can withstand the impact of high air intake volume.
Timing Belt (or Timing Chain)
Some Dongfeng diesel models (e.g., light trucks equipped with Yuchai or Yunnei engines) use timing belts, which need to be replaced every 60,000-100,000 km to prevent engine damage caused by belt breakage. If a timing chain is used, it generally does not need replacement, but its tension should be checked regularly.
II. Transmission and Chassis System Maintenance Parts
Transmission Oil
Manual transmission oil is recommended to be replaced every 50,000-80,000 km, while automatic transmission oil has a longer replacement interval (about 100,000 km). Original gear oil has a high viscosity index and can reduce gear shifting resistance.
Rear Axle Gear Oil
Lubricates the differential and half-shafts to ensure smooth power transmission. The replacement interval is approximately 100,000 km, and it should be appropriately shortened for heavy-duty models.
Power Steering Fluid
The hydraulic power steering system requires regular replacement of steering fluid. It is recommended to replace it every 24,000 km or 2 years, using CD-grade 15W/40 diesel engine oil or special hydraulic oil.
III. Braking and Safety System Maintenance Parts
Brake Fluid
It is recommended to replace it every 2 years or 40,000 km, using DOT4-grade brake fluid to avoid brake failure caused by moisture absorption. Old fluid must be completely drained using the bleeding method during replacement.
Air Dryer Cartridge
Absorbs moisture in compressed air to protect the brake pipeline. Black cartridges are recommended to be replaced every 6 months or 50,000 km, while blue cartridges can be used for up to 12 months or 100,000 km. Models such as Dongfeng Tianjin KR are compatible with the original air dryer cartridge (model: 3543010-92200).
Brake Pads/Shoe Linings
They need to be replaced when worn down to 2-3 mm; the specific interval depends on driving habits and road conditions. Original brake pads use ceramic-based composite materials, which are heat-resistant and low-noise.
IV. Cooling and Air Conditioning System Maintenance Parts
Antifreeze
It is recommended to replace it every 2 years or 200,000 km, using long-life antifreeze with a freezing point below -35℃ to prevent engine overheating or freezing. The cooling system must be flushed with clean water before replacement.
Air Conditioning Filter
Filters the air inside the cab; it is recommended to replace it every year or 20,000 km to reduce odors and bacterial growth. Some models are equipped with activated carbon filters that can absorb harmful gases.
V. Electrical and Control System Maintenance Parts
Battery
Ordinary lead-acid batteries have a service life of about 2-3 years, while maintenance-free batteries can last 4-5 years. Check the electrolyte level regularly to avoid over-discharging. Dongfeng trucks are compatible with high-capacity 12V/24V batteries with a cold cranking current (CCC) of over 800A.
Spark Plugs (Gasoline Engine Models Only)
Gasoline-powered Dongfeng models (e.g., Xiaobawang) require spark plug replacement. Platinum spark plugs have a service life of about 40,000 km, while iridium spark plugs can last up to 80,000 km. Diesel engines do not require spark plugs.
VI. Other Wear Parts
Belts (Generator/Air Conditioning Compressor Belts)
They need to be replaced when cracks appear or they become loose; it is recommended to check them every 60,000 km. Original belts use neoprene material with strong anti-aging performance.
Tires
They need to be replaced when the tread depth is less than 1.6 mm; tire rotation is recommended every 50,000 km. Dongfeng-matched tires (e.g., Double Star, Aeolus brands) have high load-bearing capacity and low rolling resistance.
Maintenance Interval Reference and Recommendations
Regular Maintenance: Replace engine oil, oil filter, and air filter every 5,000-10,000 km.
Major Maintenance: Replace fuel filter, brake fluid, antifreeze, and timing belt (if applicable) every 40,000-60,000 km.
Special Working Conditions: In dusty, high-temperature, or heavy-duty environments, shorten the replacement intervals of air filters, fuel filters, etc.
It is recommended to use original Dongfeng maintenance parts. They can be purchased through official channels such as the Shiyan Xingrongya Dongfeng Truck Parts Central Warehouse to ensure precise compatibility with the vehicle model. Replacement should refer to the vehicle operation manual and be performed by professional technicians to ensure driving safety
