Sylvie Willis
Installing push lock fuel lines can be a tricky process. While some people have had success with push lock fittings, others have found them challenging to install and remove. In this discussion, we will explore the experiences of vehicle owners and enthusiasts who have used push lock fuel lines and offer insights into potential challenges and solutions. We will also touch on alternative options, such as XRP or teflon-coated hoses, and provide tips and tricks for a successful installation process.
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Using lubricant
Lubrication is a common method used to ease the installation of push lock fuel lines. A small amount of lubricant is applied to the fittings, making them much easier to install. Without lubrication, the hose can be difficult to push onto the barbs, and the last 1/4" of the hose can be particularly challenging to install.
The type of lubricant used can vary, with some sources recommending a light lubricant such as hydraulic jack oil, while others suggest using a specific assembly lube like Royal Purple. Some people even use KY jelly as a lubricant for hose assembly.
It is important to note that too much lubrication can also be an issue. If the fittings are too slippery, it may be difficult to get the hose to stay in place. Therefore, a small amount of lubricant is usually sufficient.
In addition to lubrication, some people also recommend using a hose press or a clamp to facilitate the installation of push lock fuel lines. A hose press, such as the EZ-ON Hose Press, can be especially useful for angled and elbow fittings, which can be challenging to install by hand.
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Using a bench vise
Prepare the Work Area:
Before you begin, gather all the necessary tools and materials, including the push lock fuel line, fittings, a bench vise, and any additional lubricants or sealants you plan to use. Ensure your work area is well-lit and spacious enough to work comfortably.
Secure the Fitting:
Place the fitting securely in the stationary bench vise. Make sure the fitting is firmly clamped and cannot move or rotate. If your vise has soft jaws, consider using aluminium or plastic ones to protect the fitting from damage. You can also use magnetic aluminium vise jaw pads or inserts designed specifically for AN hose fittings.
Prepare the Fuel Line:
If you're using a lubricant, apply a small amount to the barbs of the fitting and the inside of the fuel line. Some people recommend dipping the hose in boiling water for 20 seconds instead of using a lubricant, as it makes the hose more pliable and easier to install. However, others suggest that a small amount of lubricant, such as motor oil, can help the process.
Install the Fuel Line:
With the fitting securely clamped in the bench vise, hold the fuel line and start pushing it over the first barb. You may need to use simultaneous twisting and pushing motions to get the hose onto the fitting, especially for 90-degree fittings. Use an impact gun or ratchet with a socket that fits the hose size to drive the hose onto the barb if needed.
Final Checks:
Once the fuel line is fully installed, release the fitting from the bench vise. Check the connection to ensure the fuel line is securely attached and won't come off. If you need to remove the fuel line in the future, be very careful not to damage the fitting. You may need to use a razor blade or similar tool to cut the hose, being cautious not to score the fitting.
Remember to follow all safety precautions when working with fuel lines, and always verify your connections with a pressure testing kit, especially if the lines will be transporting flammable liquids.
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Hose clamps
Push lock fittings are designed to grip the fitting without the need for a clamp. The braid reinforcement has a neutral weave pattern, similar to a Chinese finger trap, that grips the fitting when pressurised. When the hose is pressurised, it elongates and the ID (inner diameter) reduces, creating a tight seal. This is the opposite of what happens with a traditional hose, which shrinks in length and expands in diameter when pressurised. Adding a clamp to a push lock hose can defeat the angle of the braid and make it more likely to pop off the fitting or bite into the inner tube.
However, some people feel more comfortable using a hose clamp, especially if they are unsure about the quality of the fitting or the pressure is above 60 psi. In these cases, it is recommended to use a single-use band as a clamp. It is important to verify with the hose manufacturer that this is safe to do. Some people also choose to use a small amount of lubricant when installing push lock fittings, to make the process easier.
If you are using a hose clamp, it is important to choose the correct size for your hose. Hose clamps come in a variety of sizes, and using the wrong size can lead to leaks or damage to the hose. It is also important to tighten the clamp securely, but be careful not to over-tighten it, as this can also damage the hose.
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Cutting the hose
If you are cutting the hose, it is important to use the right tools and techniques to ensure a clean and safe cut. Some sources recommend the use of a hose press, such as the EZ-ON Hose Press, which can make the process faster, easier, and less frustrating. This tool is designed to work with a wide range of hose and fitting types and can be modified to fit almost any fitting. It is especially useful for angled and elbow fittings, which can be challenging to install manually.
Another method for cutting the hose involves the use of heat and/or lubrication. Boiling water or a heat gun can be used to heat the hose, making it easier to push onto the barb. However, it is important to be cautious when using this method, as overheating the hose can cause it to become brittle and fail.
Additionally, some people choose to use a small amount of lubricant on the fittings to make the installation process smoother. This can be especially helpful when dealing with arthritis or other hand-related issues.
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Using heat
Firstly, secure the fitting in a stationary vise. This will hold it in place and make it easier to work with. You can use aluminum soft jaws or vise jaw pads to avoid damaging the fitting. If you have access to one, an EZ-ON Hose Press can also be used to make the process faster and easier.
Next, you'll want to apply heat to the hose. You can use a heat gun or boil water and dip the hose in it for around 20 seconds. Be careful not to overheat the hose, as this can make it brittle and prone to failure. Once the hose is warm, dry, and flexible, you can begin to slide it over the barbs.
Some people also recommend lubricating the fittings with a light oil or assembly lube to make the process even smoother. However, others suggest avoiding lubricants, as they can interfere with the assembly. If you do choose to use lubrication, ensure it is specifically designed for this purpose and follow the manufacturer's instructions.
Finally, push the hose firmly onto the barbed area. You can use your hands or a tool like an impact gun or ratchet with a socket to drive the hose onto the barb. Make sure the hose is securely in place and won't come off with a gentle pull test.
While using heat is a common method for installing push lock fuel lines, it's important to prioritize safety. Always wear protective gear, be cautious of hot surfaces, and follow the instructions provided by the manufacturer of your specific push lock fuel line and fittings.
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Frequently asked questions
There is no "approved" way to use the fittings with fuel, but it is common practice. If you are using a hose clamp, loosen and pull the hose off, then unscrew the fitting. If not, you may need to cut the hose off.
Some people use a small amount of lubricant to help push the hose on. Others use a hose press or a bench vise with aluminium soft jaws. If you are using a clamp, make sure it is not a type that will damage the inner tube, such as a stainless clamp-tite clamp or a Gates heat shrink clamp.
Push lock fittings are much easier to install than the screw-in type. They are also cheaper than other options.
If you ever need to remove the hose, you will need to cut it, which risks damaging the aluminium fitting. Some people prefer to use a more secure option for pressurised fuel lines.
