Finding the filters: Look closely along the frame rails near each fuel tank. You might find them mounted vertically or horizontally, depending on the specific configuration. They're usually cylindrical and metal or possibly plastic, with some sort of connection (usually lines or hoses) leading to and from them.
Special Tools:
While you *might* be able to get away without specialized tools, having these will make the job much easier and cleaner:
* Fuel Filter Wrench: This is highly recommended. These are designed to grip the filter without damaging it. The size will depend on the filter, so you might need to check the filter beforehand to find the correct one.
* Wrench(es) for fuel lines: You might need wrenches to loosen or tighten fuel lines clamping onto the filter; sizes will vary.
* Clean rags or shop towels: Spills are very likely when working with fuel.
* Drain pan: To catch any spilled fuel.
* Gloves: Protect your hands from diesel fuel.
* Safety Glasses: Protect your eyes from fuel and potential debris.
* New Fuel Filters: Get the correct replacements for your specific engine (check your owner's manual or a parts store). Make sure you get the correct filters for both tanks.
Important Safety Precautions:
* Diesel fuel is flammable and toxic. Work in a well-ventilated area, away from open flames and sparks.
* Be extremely careful to avoid spills. Diesel fuel is harmful to the environment.
* Always disconnect the negative battery terminal before starting any fuel system work. This prevents accidental sparks.
* Bleed the air from the fuel system after installing the new filters. This procedure varies somewhat by engine and typically involves opening bleed screws on the fuel lines. Consult your owner's manual or a repair manual for the specific instructions for your engine.
If you are not comfortable working on your fuel system, it's always best to take your vehicle to a qualified mechanic. Fuel system work, if done improperly, can lead to costly engine damage.
