Katerina Swanson
The fuel injection pump of a Ford 3600 tractor is prone to problems, including leaks and clogging. Before removing the pump, it is important to clean the fuel shutoff and replace the fuel filter. To remove the pump, one must first remove the small timing gear cover to access the pump drive gear. There are three bolts mounting the drive gear to the pump, and it is important to put marks on the gears to ensure proper reassembly. Additionally, it is recommended to cover all fuel openings during the process and service or replace the injectors at the same time.
| Characteristics | Values |
|---|---|
| Tractor Model | Ford 3600 |
| Tractor Year | 1980, 1982 |
| Fuel Injection Problem | No throttle response, no fuel to injectors, external leaks |
| Solution | Clean fuel shutoff, replace fuel filter, bleed the system, tighten fuel fittings, crank the engine, "tow-start", cover fuel openings when dismantling, remove timing gear cover, remove fan shroud and radiator, clean and reassemble pump, loosen injector fittings |
| Parts | Fuel shutoff, fuel filter, fuel fittings, timing gear cover, fan shroud, radiator, O-rings, injector fittings |
| Tools | 5/16" wrench, 15/16" wrench |
| Advice | Be patient, follow a shop manual, mark gears before removing, tighten bolts to avoid damage, align marks on pump with center mark on tractor before cranking |
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What You'll Learn
Clean the fuel shutoff and replace the fuel filter
To clean the fuel shutoff and replace the fuel filter, follow these steps:
Firstly, shut the tank valve and remove the line at the filter inlet. Place a suitable container underneath to catch the diesel fuel, then open the valve. You should notice a continuous flow of fuel from the line. If the flow is slow or intermittent, there may be a blockage in the fuel cap or strainer upstream of the valve.
The strainer/screen is attached to the shut-off valve and is located inside the tank. To clean it, you will need to drain the tank and remove the valve. Once cleaned, reconnect the line and open the bleeder screw at the top of the filter. Turn on the tank valve and wait for a steady flow of fuel with no bubbles before closing the bleeder screw.
Now, to replace the fuel filter, start by filling the new filter as full as you can with fuel. When you fire up the tractor, do so with some throttle, as you may hit an air pocket. Keep the tractor running while you bleed the system.
If you encounter any issues with the fuel shutoff valve or screen, it is important to carefully disassemble and clean the components, ensuring you know how to properly reassemble them in the correct order.
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Loosen the fuel fittings at the injectors
Before tightening the fittings, leave the injector lines cracked open at the injectors to purge the lines. Then, tighten them up and the tractor should start. Remember, your injection pump puts out a very small amount of fuel, so be patient. If the lines are totally empty, it will take a lot of cranking to fill them up.
If you are still having issues with your fuel injectors, it may be worth servicing or replacing them.
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Remove the timing gear cover
To remove the timing gear cover, you will need to first remove the fan shroud and possibly the radiator. This will give you access to the timing gear cover, which you can then remove. It is important to note that there are three bolts with an alignment dowel mounting the drive gear to the pump, and the gear will be self-contained within the timing gear cover. Make sure to mark the gears so that you can put them back together correctly. Do not crank the engine with the drive gear loose inside the cover.
Before removing the timing gear cover, it is important to clean around the pump and cover all fuel openings to avoid any leakage. Additionally, make sure to put Loc-Tite on the three bolts in the front of the pump that holds the gear on to prevent them from backing out and causing damage.
Once the timing gear cover is removed, you will have access to the pump drive gear. To remove the injection pump, there are three bolts with an alignment dowel mounting the drive gear to the pump. You can use a 5/16" wrench to remove these bolts.
It is important to note that the pump has a key in the shaft, which makes timing a straightforward process. Line up the marks on the pump with the center mark on the tractor before attempting to crank it. These are the only timing marks you will need to worry about.
By following these steps, you can safely and effectively remove the timing gear cover and access the injection pump on your Ford 3600 tractor.
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Clean the pump and injectors
To clean the pump and injectors of a Ford 3600 tractor, you must first ensure that the tractor is switched off and that you are wearing protective gear, such as gloves and eye protection.
Start by cleaning the fuel shutoff valve at the bottom of the tank. You can then replace the fuel filter. Next, bleed the system by loosening the fuel fittings at the injectors. You can do this one at a time or all at once. Crank the engine until you see fuel at the injector fittings, then tighten the fittings. If you are doing the fittings individually, the engine will usually start before you get to the last one. You can also "tow-start" the tractor to save wear and tear on the starter. Leave the injector lines cracked open at the injectors to purge the lines, then tighten them up.
If you are experiencing issues with the injection pump, you can remove the end cap with a 5/16-inch wrench. Before doing this, wash down the pump with brake cleaner. Inside the end cap, you will find small parts, springs, and a fine screen. Remove these parts on a clean surface, ensuring that you put them back in the same order. Wash everything and reassemble the pump.
It is also important to clean around the pump and injectors before starting any work and to cover all fuel openings as you dismantle them.
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Check for wear marks on the spring
When removing the fuel injector pump on a Ford 3600 tractor, it is important to check for wear marks on the spring to ensure proper function and prevent potential damage. Here are some detailed steps and instructions to guide you through the process:
First, locate the spring within the fuel injector pump assembly. The spring is one of the small parts housed inside the end cap of the pump. To access it, you will need to remove the end plate and the fitting that holds the fuel line at the back of the pump. A 15/16 wrench is typically required for this step.
Once you have exposed the spring, carefully inspect it for any signs of wear or damage. Look for marks, scratches, or any irregularities on the surface of the spring. Minor wear marks may indicate that the spring has been in use for a long period or subjected to excessive stress. More significant wear or damage could impact the performance of the spring and, consequently, the fuel injector pump.
If you identify any wear marks, consider replacing the spring to ensure optimal performance. It is crucial to consult a tractor repair specialist or a mechanic to assess the extent of the wear and provide advice on the necessary repairs or replacements. They can guide you on sourcing the correct replacement parts and ensuring a proper fit.
Additionally, when inspecting the spring, take note of its position and orientation. As mentioned by one tractor owner, it is crucial to "remove all the parts in a specific order, making sure they went back in the same way." This ensures that the fuel injector pump is reassembled correctly, reducing the risk of further damage or malfunction.
By carefully checking for wear marks on the spring and following the necessary maintenance procedures, you can help maintain the performance and longevity of your Ford 3600 tractor's fuel injector pump. Regular inspection and maintenance can prevent more significant issues and ensure the tractor operates efficiently.
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Frequently asked questions
To remove the fuel injector pump, first, remove the small timing gear cover to access the pump drive gear. There are three bolts (with an alignment dowel) mounting the drive gear to the pump. You can put marks on the gears to ensure they go back together correctly.
Before removing the pump, make sure to clean around the pump and injectors. Cover all fuel openings as you dismantle them.
This could be because the pump is air-locked. Give it full throttle and open the injector pump bleeder screw until diesel comes out without any air bubbles. Then close it and turn the throttle down.
