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How to Replace a Fuel Filter on Cat® Equipment
Estimated read time: 2 minutes
Keeping your fuel system clean is essential for maintaining your machine’s performance. Replacing your Cat® primary fuel filter regularly can prevent clogs and protect your engine from debris. Here’s a step-by-step video on how to replace a Cat primary fuel filter, using a Cat 299D3 Compact Track Loader as an example.
Check out this video and then read on to learn more:
Start by parking your machine on a flat surface and shutting off the engine. Always check your Operation and Maintenance Manual (OMM) for safety instructions, and wear proper personal protective equipment (PPE).
Drain Water and Fuel
Locate the fuel filter compartment, which is at the back of the 299D3. Disconnect the water-in-fuel sensor plug at the bottom of the water bowl. Attach a drain hose and open the valve to drain the water and fuel into a suitable container. Once the fluid is fully drained, remove the drain hose and close the valve.
Remove Old Filter
Separate the water bowl from the fuel filter by rotating it counterclockwise. Then, turn the filter counterclockwise about three-quarters of a turn to remove it. Clean the mounting base and the housing with a lint-free cloth to make sure the new filter will seal well.
Install New Filter
Apply a thin layer of clean fuel to the seal of the new filter. Do not prefill it with fuel. Install the new filter and housing onto the mounting base by rotating it clockwise until you hear a click, which indicates it is fully seated. Reattach the water bowl by rotating it clockwise, and reconnect the water-in-fuel sensor plug.
Prime Fuel System
Refer to your OMM for instructions on how to prime the fuel system to fill the new filter with fuel. This step readies the filter for operation.
Check Used Filter
It’s good practice to inspect the used filter for debris. You can cut into the filter and follow the instructions in your OMM for this process.
For further guidance or support, contact your Cat dealer. Always refer to your OMM for detailed safety and maintenance instructions.
