Mercedes Mullins
Removing fuel tank sealer can be a tedious and challenging task. While some recommend using chemical solvents like MEK, PolyGone, acetone, or drain cleaner, others suggest mechanical methods such as pneumatic seal scrapers, air-powered dremmel tools, or sanding discs. It is important to exercise caution when working with chemicals and open flames, and to ensure that the fuel tank is thoroughly cleaned and prepared before applying a new sealer. Proper safety gear, such as masks, is also crucial when handling these substances.
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What You'll Learn
Use chemicals like MEK, PolyGone, or acetone
Removing fuel tank sealant can be a tedious and challenging task. While some physical tools can help, such as scrapers, brushes, and chisels, chemicals like MEK (Methyl Ethyl Ketone), PolyGone, or acetone can also be used to effectively remove the sealant. Here's how you can use these chemicals:
MEK
MEK is a powerful solvent that can dissolve adhesive residue. It is essential to take safety precautions when using MEK due to its potential health hazards. Always wear a respirator or a mask to avoid inhaling the fumes, as prolonged exposure can lead to loss of sense of smell. MEK is banned in certain countries due to its hazardous nature.
PolyGone
PolyGone is a chemical agent that helps break down the adhesive in the fuel tank sealant. To use PolyGone effectively, apply it to the sealant and let it sit for at least an hour. The longer you let it sit, the better it will break down the adhesive. Even with PolyGone, some manual effort and scraping will still be required.
Acetone
Acetone is a solvent similar to MEK but with a faster evaporation rate. It can effectively dissolve adhesives and is often used to remove residues. Similar to MEK, it is important to use acetone in a well-ventilated area and wear personal protective equipment, including a respirator or a mask, to avoid inhaling the fumes.
When using any of these chemicals, it is crucial to follow safety guidelines and handle them with caution. They can be hazardous to your health if not used properly. Additionally, always test the chemicals on a small area first to ensure they do not damage the fuel tank material.
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Try mechanical methods like scrapers, hammers, or pneumatic tools
Removing fuel tank sealant is a challenging and tedious task. However, mechanical methods like scrapers, hammers, and pneumatic tools can be used to get the job done.
Scrapers are a popular choice for removing fuel tank sealant. It is recommended to use plastic scrapers and sharpen them on a belt sander when needed. Providing extra scrapers can also reduce travel time to and from the sander. To keep the scraper sharp, a sanding disc can be used. One unique suggestion is to use a red scraper with the end wrapped in tape, along with a hammer.
Pneumatic tools, such as air-powered dremmel tools with plastic bits, can also be effective. These tools are similar to air chisels with replaceable plastic tips. They are useful for reaching into confined spaces, but caution must be exercised to avoid catching a rivet or causing damage.
While mechanical methods can be helpful, it's important to note that no single tool or tip can make the task of removing fuel tank sealant easy. It requires good old-fashioned elbow grease and dedication.
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Soak the tank in a phosphoric and water solution
Soaking the tank in a phosphoric and water solution is one way to remove old fuel tank sealant. This method was suggested by a user on Triumph Rat Motorcycle Forums, who soaked their '69 Trophy fuel tank in such a solution, causing the old sealant to come off in large flakes.
Phosphoric acid is one of the top ten chemicals used in the United States. It is used in the treatment of drinking water, as well as in the food industry, pharmaceuticals, detergents, and textile pigments. It is important to note that phosphoric acid must be handled properly due to its corrosive qualities. It is often stored in stainless steel chemical storage tanks, which are resistant to corrosion and can be kept indoors or outdoors.
The process of cleaning a phosphoric acid tank involves injecting rinse water at a temperature of more than 80°C into the tank after it has cooled down for 3-4 days. The tank is then soaked for 4-5 days, during which the wall built-up gypsum is removed through immersion.
While soaking the tank in a phosphoric and water solution can be effective, it is not the only method for removing fuel tank sealant. Other methods include using scrapers, such as pneumatic seal scrapers or SHARP phenolic scrapers, or chemicals like MEK, PolyGone, or Rust-oleum aircraft remover.
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Use a pressure washer with hot water
To remove fuel tank sealer, a pressure washer with hot water can be used. This method is particularly effective when combined with chemical solvents such as acetone or methyl ethyl ketone (MEK). These solvents can be poured into the tank and allowed to soak for several hours, breaking down the sealer.
When using a pressure washer, it is important to follow safety precautions. The washer should be set to a low pressure, around 1-5 psi, to avoid damaging the tank's surface. The user should also wear protective gear, including heavy rubber gloves and eye protection, to shield themselves from the hot water and chemicals.
The process begins by mixing a solution of hot water and detergent (dishwashing liquid). This mixture is then poured into the fuel tank and allowed to soak for several hours. The detergent helps to break down the sealer, making it easier to remove. After soaking, the solution is drained from the tank.
Next, the pressure washer is used to rinse the tank with hot water. The washer should be set to a low pressure, and the user should take care to thoroughly rinse all internal surfaces of the tank. This step helps to remove any remaining sealer residue, as well as any detergent or chemical solvent used in the previous steps.
It is important to ensure that the tank is completely dry before applying any new sealer or coating. Using a compressor air line, forced ventilation can be created to speed up the drying process. This step ensures that the tank is ready for the next stage of the process, whether it be applying a new sealer or simply refilling the tank.
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Apply a new sealant to replace the old one
Once you have removed the old fuel tank sealant, you will need to apply a new sealant to prevent leaks and protect the tank from rust and corrosion. There are several products available for this purpose, including:
- POR-15 Fuel Tank Sealer: This product is formulated for metal and is impervious to all fuels, including diesel, E10 ethanol, and high-alcohol content fuels. It acts as a liner and stops rust, corrosion, and small fuel leaks. It is important to ensure that the fuel tank is free from plastic parts, contamination, and loose rust before applying this sealer.
- KBS Coatings Rust Blaster: This product is designed to be poured into the tank and allowed to soak for 30 to 60 minutes before rinsing. It helps to remove rust and clean the tank before applying a new sealant.
- Auto Fuel Tank Sealer Kit: This kit includes everything needed to clean and coat a fuel tank, up to a capacity of 25 gallons. It also helps to prevent future rust. The kit contains a mixture of sealer and hot water, which needs to be poured into the tank and shaken to ensure even distribution.
- PPG Aerospace PR1005L: This is a single-part sloshing solution for aircraft, suitable for use with fuel and ethanol.
When applying a new sealant, it is important to follow the manufacturer's instructions carefully. For example, the Gold Standard Fuel Tank Sealer requires the entire can of sealer to be poured into the tank, which is then worked around the inside of the tank for 30 minutes. Any excess sealer is then drained, and the tank is left to dry for 48 hours.
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Frequently asked questions
Some tools that can be used to remove fuel tank sealer include scrapers, pneumatic seal scrapers, and an air-powered dremmer tool.
Some chemicals that can be used to remove fuel tank sealer include acetone, MEK, PolyGone, and Rust-oleum aircraft remover.
Removing fuel tank sealer manually is a tedious task that requires elbow grease. One method is to use a scraper with the end wrapped in tape and a hammer.
