Tractor Fuel Filter: Changing The Ih 484'S Filter Step-By-Step

If you're looking to change the fuel filter on your IH 484 tractor, there are a few things you should know. Firstly, it's important to determine which type of fuel filter your tractor has. Some models have a single spin-on canister fuel filter with a drain cock, while others have two CAV fuel filters with a glass bowl and a threaded rod. Identifying the correct fuel filter type for your tractor is crucial before attempting any maintenance or repairs.

Additionally, it is recommended to regularly drain water from the bottom of the fuel filter, especially if the tractor is used during winter when condensation can accumulate in the fuel tank. This will help prevent clogging and ensure the optimal performance of your tractor's fuel system.

When changing the fuel filter, it is also important to refer to the owner's manual for specific instructions and part numbers. In some cases, you may need to replace both the primary and secondary filters, while in others, only the primary filter may need replacement. It is generally recommended to replace the secondary filter less frequently.

By following these guidelines and consulting the appropriate resources, you can successfully change the fuel filter on your IH 484 tractor and maintain its fuel system in good working condition.

Identify the primary and secondary fuel filters

The primary and secondary fuel filters in the IH 484 tractor serve different purposes and are located in different places. The primary fuel filter is the first line of defence and is usually located on the truck frame. It is plumbed between the fuel tank and the engine's gear pump. This filter is designed to remove larger particulates from diesel fuel, ranging from 50 to 7 microns in size, and can also remove free water from the fuel.

The secondary fuel filter, on the other hand, is mounted directly onto the engine and receives fuel after it has passed through the engine's gear pump. It is responsible for finer filtration, using filter mediums with tighter micron ratings, typically between 5 and 2 microns. This ensures that the fuel entering the injectors is as clean as possible.

Sitting in the driver's seat of the IH 484, the primary fuel filter is on the right and does not have a drain plug. The secondary fuel filter is on the left and has a drain plug. The primary filter is usually coarser to screen out larger particles, while the secondary filter catches any fine particles that pass through the primary.

Drain the fuel tank

To drain the fuel tank of your IH 484 tractor, you will need to locate the petcock valve, which is usually found on the bottom of the fuel tank. This valve is used to drain the tank and should be opened to allow the fuel to drain out.

Before beginning this process, it is important to ensure that you have a suitable container to catch the drained fuel and that you are wearing appropriate safety gear, such as gloves and eye protection. It is also recommended to have some rags or absorbent materials on hand in case of any spills.

Now, follow these steps:

• Locate the petcock valve: This is usually found on the bottom of the fuel tank. It may be painted the same colour as your tractor, so look for a small valve or cock, possibly with a red handle, near the fuel tank.
• Prepare your workspace: Place a suitable container underneath the petcock valve to catch the drained fuel. You may also want to have some absorbent rags or materials nearby in case of any spills.
• Open the petcock valve: Turn or open the valve counter-clockwise to begin draining the fuel.
• Allow the fuel to drain: Depending on the amount of fuel in your tank, this may take some time. Ensure that your container can handle the volume of fuel being drained.
• Close the petcock valve: Once the fuel has finished draining, close the valve by turning it clockwise.
• Dispose of the drained fuel: Ensure that you dispose of the drained fuel in a safe and environmentally friendly manner. Check with your local regulations for proper disposal methods.
• Clean up: Use rags or absorbent materials to wipe up any spills or leaks that may have occurred during the draining process.

Remember to exercise caution when working with fuel, and always prioritise safety. Ensure that the area is well-ventilated, and avoid any open flames or sparks during the draining process.

Check for leaks at the fuel filters

To check for leaks at the fuel filters of your IH 484 tractor, start by locating the fuel filters. There are two fuel filters on the IH 484: the primary filter and the secondary filter. The primary filter is usually on the right side of the tractor, and it does not have a drain plug. The secondary filter is on the left side and has a drain plug.

Once you have located the fuel filters, follow these steps to check for leaks:

• Visual Inspection: With the engine off and cool, carefully inspect the area around the fuel filters for any signs of fuel leakage. Look for wet spots, drips, or fuel stains on the engine block or surrounding components.
• Check for Fuel Odour: A strong fuel odour around the engine bay could indicate a fuel leak.
• Listen for Hissing: A leaking fuel filter may create a hissing sound as fuel escapes.
• Use a Fuel Pressure Gauge: This is a more accurate method to check for leaks. Connect the fuel pressure gauge to the fuel line according to the manufacturer's instructions. Start the engine and let it idle. Monitor the gauge for any significant drops or fluctuations in fuel pressure, which could indicate a leaking fuel filter.

If you suspect a fuel leak, it is important to address it as soon as possible to prevent further issues and potential safety hazards.

Bleed the filters as per the manual

Bleeding the fuel filters is an important step in ensuring the smooth operation of your IH 484 tractor. Here is a detailed guide on how to properly bleed the filters, as per the manual:

Before beginning, ensure that your tractor is parked on level ground and that the fuel tank is at least three-quarters full. This will provide sufficient fuel pressure for the bleeding process.

Locate the fuel filters: the primary filter is on the right side of the tractor, and the secondary filter is on the left when facing the tractor.

Now, follow these steps:

• Open the bleed screw on the top of the primary fuel filter, which is closest to the fuel tank. Allow fuel to flow until it is bubble-free.
• Once the fuel flow is bubble-free, close the bleed screw.
• Repeat this process for the secondary fuel filter, which is closest to the injection pump.
• Put the Stop/Start/Run lever in the 'Start' position and adjust the throttle to about one-third open.
• Crank the tractor engine for 30 seconds. If it starts, loosen one of the injector lines at the rear of the injection pump and try starting again.
• It is important to not crank the starter motor continuously, as it may overheat.
• Additionally, filling the filters with clean fuel before installation can help ensure a smooth start and reduce the need for extensive bleeding.
• To enhance performance and protect the engine, consider adding a quart of ATF to some diesel and pouring it into the tank. The ATF removes moisture and lubricates the pump.

By carefully following these steps, you will effectively bleed the fuel filters on your IH 484 tractor, ensuring optimal fuel flow and engine performance.

Check for air in the injector lines

To check for air in the injector lines of your International Harvester 484 tractor, you'll need to perform a few steps to bleed the air from the fuel system. Here's a detailed guide:

• Turn Off the Fuel Valve: Start by turning off the fuel supply valve to prevent fuel flow while you work on the system.
• Clean the Filter Housing: Clean the outside of the fuel filter housing to remove any dirt or debris that may have accumulated.
• Install New Filter and Gaskets: Install a new fuel filter element and new gaskets. Applying a small amount of oil on the gasket can help ensure a tight seal. It is also recommended to fill the new filter with clean fuel before installation.
• Open the Bleed Plug on the Filter Closest to the Fuel Tank: Locate the bleed plug on the fuel filter that is closest to the fuel tank and open it.
• Open the Fuel Supply Valve: Open the fuel supply valve to allow fuel to flow to the filter and the pump.
• Prime the Fuel System: If your equipment has a hand priming pump lever, use it to pump fuel through the system and replace trapped air. Refer to your operator's manual for specific instructions on priming. Pump until full flow without air bubbles is achieved from the bleed plug holes.
• Bleed Filters, Fuel Pump, and Injection Lines: Close the bleed plugs after removing air from the fuel tank, filters, settlement bulb, and fuel pump. Work on one bleed screw at a time, starting from the one closest to the tank and moving towards the nozzles if necessary.
• Loosen Injection Lines at the Injectors: If the engine still doesn't start or runs poorly, you may need to bleed the injection lines. Loosen the injection lines at the injectors about one turn. Using two wrenches can help prevent binding or twisting of the steel lines.
• Crank the Engine: Crank the engine until all air is forced out and fuel is present. You may need to crank for up to 30 seconds.
• Listen for Engine Popping: The engine will start to pop on one or two cylinders as the air is expelled.
• Tighten Injector Lock Nut: Tighten the injector lock nut one at a time, and you should be able to hear which cylinders are firing properly.
• Run the Engine: Finally, run the engine until it runs smoothly. This will help bleed the remaining injectors.

By following these steps, you can effectively check for and remove air from the injector lines of your IH 484 tractor, ensuring smooth and efficient engine performance.

Frequently asked questions