Applications:

INTERNATIONAL TRUCKS  HX 515HX 515HX 520HX 615HX 615PAYSTAR 5600iPAYSTAR 5900i
JOHN DEERE  1050 K1050 K1050 K1050 K1050 K PL1050 P1050 P1910 5409R 5909R 6409R 6409RT 4709RT 5209RT 5709RX 4909RX 5409RX 5909RX 6409RX 7109RX 7709RX 830CH 570CH 670CP 770CS 770S7 800S7 900S7 900T5 400T5 500T5 600T5 700T6 500T6 600T6 700T6 800
JONCKHEERE  JHD/JSD/SHD 122-380JHD/JSD/SHD 122-430JHD/JSD/SHD 134-480JHD/JSD/SHD 140-460JHD/JSD/SHD 140-480JHD/JSD/SHD 70-460
KOMPTECH  CRAMBO 3400CRAMBO 3400TERMINATOR 5000 S
LAVERDA  286 LCSM 303M 304M 304 LSM 305M 306 LS
LIUGONG  CLG 945CLG 945 ECLG 948CLG 948 ECLG 950 E

Professional John Deere Fuel Filter AT365869 P551858 P551025 1355891

Q: Can you drain a fuel water separator while running?

It is not recommended to drain the fuel water separator while the engine is running, especially for diesel vehicles or vehicles using high-pressure common rail fuel systems. The following are the key reasons and correct operation methods:
• There is a risk of fuel leakage: the system is under pressure during operation, and loosening the vent or drain bolts may cause fuel splashing, leading to fire or environmental pollution.
• Possible inhalation of air: If operated improperly, air may be sucked into the fuel system, causing the engine to stall or have difficulty starting.
• Impact on fuel pressure stability: The high-pressure common rail system is sensitive to fuel pressure, and venting during operation may interfere with fuel injection accuracy, causing power fluctuations or abnormal emissions.

Q: What happens if you don't change your fuel water separator?

If the fuel water separator is not replaced, especially in applications such as diesel vehicles or catering, it will bring a series of negative impacts. The main consequences are as follows:
• Fuel system damage: Moisture and impurities cannot be effectively separated, which can corrode precision components such as fuel pumps and injectors, leading to an increase in failure rates and significantly higher maintenance costs.
• Decreased engine performance:
O Unstable acceleration, insufficient power, and weak acceleration
O Engine shaking, difficulty starting, and even stalling;
O Emissions of black or white smoke (white smoke is formed by water vapor and may corrode high-pressure fuel injectors).
• Carbon deposition and increased wear: Impurities enter the combustion chamber to form hard carbon deposits, affecting parts such as the intake valve and cylinder, reducing engine efficiency and lifespan.
Increased fuel consumption: Insufficient combustion leads to a decrease in fuel economy.

Q: How to change fuel water separator filter?

Replacing the oil-water separator filter is an important step in the maintenance of diesel vehicles or diesel mechanical equipment. Proper operation can ensure the cleanliness of the fuel system and extend the engine life. The operation steps are as follows:
• Preparation work
Ensure that the vehicle is turned off and the engine is cooled down, and close the fuel system inlet ball valve (if any).
Prepare new filter cartridges, oil resistant gloves, cleaning cloths, oil pans, and other tools.
• Drain the fuel from the old filter element
Open the drain valve or drain bolt to release some fuel and reduce the risk of spillage during disassembly.

• Disassemble the old filter cartridge assembly
Rotate the combination of the filter element and the water collecting cup counterclockwise (to the left).
Separate the water cup from the filter element and pour out the internal water and impurities.
• Cleaning and inspection
Thoroughly clean the water cup, oil ring, and installation base with clean diesel or kerosene to remove oil sludge and sediment.
Check if the sealing ring is intact and replace it if necessary.

• Install a new filter element
Fill the new filter element with diesel first, which is a crucial step to avoid the fuel system from inhaling air during startup.
Replace the cleaned water cup with the new filter element and tighten it clockwise (to the right) to the base.
Pay attention to the direction of the inlet/outlet arrows on the filter element, which must be consistent with the fuel flow direction and cannot be reversed.
• Exhaust and inspection
Loosen the air release bolt on the filter base or oil pump, and press the hand oil pump until no bubbles emerge and fuel continues to flow out.
Tighten the air release bolt, start the engine, idle for a few minutes, and check for leaks.