Ameer Randolph
Changing the fuel filter on a John Deere tractor is a straightforward process, but priming the fuel system afterwards can be challenging. One common issue is that the tractor won't start after changing the filter. This can be due to issues with the bleed screw, the hand pump, or the injection pump. It's important to ensure that the correct procedures are followed to purge air from the fuel lines.
| Characteristics | Values |
|---|---|
| Vehicle Type | John Deere Tractor |
| Tractor Model | 5105 |
| Issue | Bogging down while in use and wouldn't start |
| Solution | Replace the fuel filter, bleed the pump at the top, loosen the bleed screw on the filter, use the hand pump to fill the filter and purge air from the line, open the bleeder on the injection pump |
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What You'll Learn
Loosen the bleed screw on the filter
When changing a fuel filter on a John Deere tractor, you may need to loosen the bleed screw on the filter. This is an important step as it helps to purge air from the line.
To do this, locate the bleed screw on the filter. It is usually positioned at the top of the filter. Using the appropriate tool, loosen the screw by turning it counterclockwise. Be careful not to remove the screw completely, as this could result in fuel leakage.
Once the bleed screw is loosened, you can use a hand pump to fill the filter. This step ensures that the filter is primed and ready for use. It is important to ensure that any air trapped in the line is purged. This can be done by opening the bleeder valve on the injection pump, located near the bleed screw. By loosening the bleed screw and purging the air, you reduce the risk of airlocks in the fuel system, which could cause performance issues or engine failure to start.
After loosening the bleed screw and purging the air, remember to tighten the screw securely. This will prevent any fuel leaks and ensure the fuel system maintains the correct pressure. A properly tightened bleed screw also reduces the risk of air entering the fuel system, which could lead to reduced engine performance.
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Use the hand pump to fill the filter
When changing the fuel filter on a John Deere tractor, you may need to use a hand pump to fill the filter. This is part of the process of priming the fuel system. To do this, first loosen the bleed screw on the filter. Then, use the hand pump to fill the filter and purge all the air from the line.
Next, open the bleeder on the injection pump and purge any remaining air from the system. This will ensure that the injectors are primed and ready to deliver fuel to the engine. It is important to note that if the engine was not run out of fuel, the injectors should not need to be bled.
If you are still having trouble priming the fuel system, you may need to bleed the pump at the top. If there is no bleeder, loosen the inline from the filter. If the injection pump has an electric device and kills with the key, it likely has a fuel shut-off solenoid. This needs to have battery voltage at all times when the key is on.
In some cases, you may need to replace the solenoid. To do this, remove it and check its operation. It may be stuck and just need to be freed up.
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Purge air from the line and injection pump
To purge air from the line and injection pump of your John Deere tractor, follow these steps:
Firstly, ensure that you have loosened the bleed screw on the filter. Then, use the hand pump to fill the filter and purge the air from the line. You may need to loosen the inline from the filter if there is no bleeder on the injection pump. Next, open the bleeder on the injection pump and purge all the air out up to the pump.
It is important to note that the injectors do not need to be bled unless they were run dry, such as when you run out of fuel. If the engine still won't fire, there may be other issues at play, such as a faulty fuel shutoff solenoid or voltage issues.
To purge air from the fuel line of a John Deere Gator, you must first fill up the fuel tank with clean diesel fuel. Then, prime the fuel pump manually by moving the primer lever up and down until you hear the fuel returning to the tank through the hose. Tighten the bleed screw with a screwdriver, being careful not to overtighten it. Finally, wipe off any excess fuel from the fuel filter area with a rag, insert the key into the ignition, and crank the engine.
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Open the bleeder on the injection pump
To open the bleeder on the injection pump of a John Deere tractor, you must first loosen the bleed screw on the filter. Then, use the hand pump to fill the filter and purge all the air from the line. Once you have done this, open the bleeder on the injection pump and purge any remaining air.
It is important to note that the injectors do not need to be bled unless they were run dry, such as when you run out of fuel. If you are having trouble priming the fuel system and the engine won't fire, make sure you have completed this step.
If you are still experiencing issues, try bleeding the pump at the top. If there is no bleeder, loosen the inline from the filter. If your injection pump has an electric device and it kills with the key, it has a fuel shut-off solenoid. This must have battery voltage at all times when the key is on. If it doesn't open the fuel, you will get no fuel to the injectors.
If you are still unable to open the bleeder on the injection pump, there may be an issue with the fuel shut-off solenoid. In this case, you may need to remove and check its operation or replace it entirely.
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Bleed fuel up to the pump with primer
To bleed fuel up to the pump with a primer on a John Deere tractor, you should first fill up the fuel filters completely. Then, loosen the bleed screw on top of the fuel filter housing.
Next, manually actuate the fuel transfer pump by turning the key for an electric motor or cranking the engine for a gear-type pump. Pump the primer lever until you see fuel flowing from the open bleeder screw on the top of the filter housing, then tighten the screw.
Loosen the bleeder screw on the injection pump, and actuate the fuel pump primer lever again. Finally, re-tighten the bleed screw when you see a steady fuel flow.
If the engine fails to start, you may need to take additional steps. Loosen the high-pressure line connections at the injectors, then crank the engine until fuel emerges from the fuel lines. Re-tighten the lines and crank the engine again.
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