Katerina Swanson
Inspecting an auxiliary fuel tank is a crucial aspect of maintaining any vehicle. Fuel tank issues such as leaks, corrosion, and clogs can lead to decreased performance and, in severe cases, engine failure or safety hazards. To prevent these issues, regular inspections and proper maintenance are essential. This includes checking for leaks, ensuring adequate fuel levels, and maintaining the pumping equipment, vents, and valves. Additionally, the quality of the fuel itself is important, as poor-quality fuel can damage the tank and equipment. By conducting regular inspections and addressing any issues promptly, you can help ensure the optimal performance and longevity of your vehicle.
| Characteristics | Values |
|---|---|
| Inspection Frequency | Weekly, every six months, every twelve months |
| Inspection Requirements | Trained person with appropriate PPE |
| Inspection Process | Visual inspection for leaks, water-finding test, checking fuel levels, checking fuel quality, checking pumping equipment, vents and valves, checking fuel lines, filters, and connections |
| Maintenance | Lubricate hinges, clean filler caps, apply lithium grease to prevent rust, replace water filter, use fuel additives, avoid overfilling, store in a dry, ventilated area |
| Common Issues | Corrosion, leaks, clogs, fuel pump wear, electrical problems |
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What You'll Learn
Check for leaks, corrosion, and damage
Checking for leaks, corrosion, and damage is crucial in maintaining the integrity of your auxiliary fuel tank. Here are some detailed steps to guide you through this process:
Firstly, establish a regular inspection routine for your auxiliary fuel tank. Depending on the nature of your operations, it is recommended to inspect your tank every six to twelve months. Create a schedule that works for you, ensuring you consistently check for leaks, corrosion, and any signs of damage.
Before commencing your inspection, ensure the auxiliary fuel tank is located in a clear and safe area, free from any potential hazards. If your tank is static, it is crucial to ensure it is adequately grounded (electrically earthed) before performing any operational checks or tests.
Now, let's delve into the specific checks for leaks, corrosion, and damage:
- Visual Inspection for Leaks: Start by conducting a thorough visual inspection of the tank and its components, including fuel lines, pumps, filters, and connections. Keep the area around your tank clean and free from debris, vegetation, and clutter, as this makes it easier to spot any drips, spills, or signs of leakage. Check the hinges of the cabinet cover or door, ensuring they are well-lubricated to prevent rust and wear.
- Water and Product Inspection: On a weekly basis, inspect the interstitial space (containment area) for any water or product accumulation. This may include rainwater, diesel, or other liquids. A trained and competent person with appropriate personal protective equipment (PPE) should carefully remove and dispose of any accumulated liquids, treating them as hazardous waste in accordance with local regulations.
- Water-Finding Test: Regularly perform a water-finding test by dipping the tank. This will help identify any water accumulation within the tank, which could lead to corrosion and other issues.
- Fuel Quality Check: Ensure that you are using high-quality fuel. Poor-quality fuel can damage your tank and equipment, leading to costly repairs. Check your fuel for any signs of degradation, especially if the tank has been stored for an extended period.
- Corrosion and Damage Inspection: Carefully inspect the tank and its components for any signs of corrosion or damage. Pay close attention to the pumping equipment, vents, valves, and filler caps. Remove filler caps and clean the threads using a wire brush if necessary. Apply a small amount of lithium grease to prevent rust buildup. Inspect the gasket at the bottom of the cap to ensure it provides a good seal before refitting.
- Physical Checks: Every six months, perform a physical inspection of bolt tightness and paint deterioration. Check the general condition of the pumps, vents, and valves to ensure they are in good working order and show no signs of excessive wear or damage.
- Fuel Level Monitoring: Regularly check your fuel levels. Running on a near-dry tank can lead to sediment formation, which can block pumps and damage equipment. Additionally, look for any debris or sludge in the tank, as these can clog filters and damage pumps.
- Filter Maintenance: Replace your fuel filter regularly to prevent clogging, which can reduce fuel flow and harm engine performance. Check and clean mesh filters (strainers) during your inspections. These are typically located at the end of the feed line inside the tank or near the butterfly valve (Y-type strainer).
- Preventative Measures: To mitigate corrosion and damage, store your auxiliary fuel tank in a dry, ventilated area. If you plan to store it for an extended period, add a stabilizer to prevent fuel degradation. Adjust your maintenance routine according to the season—for example, use winter-grade fuel during winter to prevent gelling, and consider using a fuel line heater.
Remember, if you notice any severe fuel leakage, fuel system failure, engine performance issues, or strong fuel odors, consult a certified mechanic immediately. They have the necessary skills and tools to diagnose and address these issues effectively.
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Inspect fuel lines, pumps, and filters
Inspecting fuel lines, pumps, and filters is an important aspect of auxiliary fuel tank maintenance. Here are some detailed steps to guide you through the process:
Fuel Lines:
- Before inspecting fuel lines, disconnect the battery to prevent accidental ignition of petrol or petrol vapour. Ensure that any naked flames or cigarettes are extinguished, and use a torch instead of an inspection lamp to avoid fire risks.
- Check the entire length of the fuel line, including both single and twin piping systems. Look for signs of corrosion, cracks, abrasion, or leaks. Pay close attention to joints and connectors, as these are common sources of leaks.
- Inspect the condition of the connectors and pipes. Overtightened connectors can cause leaks, and plastic pipes joined with nut-type joints should not be twisted during tightening or loosening.
- Special attention should be given to the section of the fuel line in the engine bay, as heat and oil can damage its rubber connectors. Clear plastic tubing, which is flexible and fuel-resistant, is often used in this area.
- Replace any hardened or aged plastic fuel pipes, as they can become brittle and prone to leaks.
Fuel Pumps:
- Check the fuel pump fuse in the fuse box. If it is blown (broken or burned), replace it with a fuse of the proper amp rating.
- Inspect the voltage at the pump to ensure it is receiving power. Test for source voltage and, if necessary, check the fuel pump relay circuit.
- Perform a drop test using a voltmeter to verify that the power wire shows the correct voltage and the grounding wire is properly grounded.
- Regularly inspect vents and valves to maintain proper fuel flow. Clean threads with a wire brush and apply lithium grease to prevent rust.
Fuel Filters:
- Locate the fuel filter, typically placed in-line between two sections of the fuel line, often near the fuel tank. Some vehicles have see-through plastic fuel filters.
- Inspect the condition of the paper filter inside. If it appears dark brown or has visible sediment, it needs to be replaced.
- To test the fuel filter, have an assistant turn the ignition on while you observe the fuel delivery behaviour. Compare the rate of fuel flow with the expected behaviour.
- If the fuel filter is clogged, remove it from the vehicle and drain the excess fuel. Use a short rubber hose on the filter inlet and blow through it, checking for resistance. Inspect the screen for debris and replace the filter if necessary.
Remember to exercise extreme caution when working with fuel systems, as even small leaks can cause fires. Always refer to your vehicle's service manual for specific procedures and safety precautions.
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Ensure proper ventilation and grounding
When inspecting an auxiliary fuel tank, ensuring proper ventilation and grounding is crucial for safety and the integrity of the fuel. Here are some detailed steps and considerations to keep in mind:
Clear the Area
Before beginning any inspection or maintenance work on your auxiliary fuel tank, ensure the area around the tank is clear of any debris, vegetation, or obstacles. This not only helps with easy access during the inspection but also aids in the early identification of any drips, spills, or leaks. Keeping the area clear contributes to proper ventilation by allowing airflow and preventing the accumulation of flammable vapours.
Ventilation
Proper ventilation is essential when working with fuel tanks to avoid the buildup of flammable vapours and to ensure the safety of those performing the inspection. If the auxiliary fuel tank is portable, it is recommended to fill it in a well-ventilated area, away from any sources of ignition, such as flames or sparks. Additionally, ensure that the tank is positioned at ground level to avoid overfilling, which can lead to spillage and environmental hazards.
Grounding
For static fuel tanks, it is crucial to ensure they are adequately grounded (electrically earthed) before performing any operational tests or inspections. Proper grounding helps prevent static electricity buildup, which can ignite fuel vapours and lead to an explosion. Check the tank's grounding connections and ensure they are secure and intact. If the tank is portable, ensure it is placed on the ground or a conductive surface to provide a path for any static electricity to dissipate safely.
Regular Vent and Valve Inspections
As part of your regular maintenance routine, inspect the vents and valves of the auxiliary fuel tank. These components play a vital role in maintaining proper ventilation and fuel flow. Check for any signs of leaks, damage, or obstructions. Clean or replace vents and valves as necessary, following the manufacturer's guidelines. This will help ensure the tank remains properly ventilated and functional.
Safe Fuel Storage
Proper fuel storage practices are essential to maintaining ventilation and grounding. Always store fuel tanks in a cool, dry place, away from direct sunlight and heat sources. Consider using a fuel stabilizer if you plan to store fuel for extended periods, as this will prevent fuel degradation. Additionally, adjust your fuel tank maintenance based on the season—for example, use winter-grade fuel during colder months to prevent gelling.
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Check fuel levels and quality
Checking fuel levels and quality is an essential part of auxiliary fuel tank inspection and maintenance. Here are some detailed steps to ensure you're doing it right:
First, ensure your safety. Before inspecting the fuel tank, make sure it is located in a clear area away from any hazards, including electrical hazards. If your tank is in a static position, it should be adequately grounded (electrically earthed) before performing any operational tests or inspections.
Next, visually inspect the tank for leaks. Keep the area around the tank clear of debris and vegetation to easily identify any drips or spills. Check for water or product in the interstitial space (containment area) weekly, and remove any accumulation of rainwater, diesel, or other liquids. A trained person with appropriate PPE should handle the removal, treating the waste as hazardous and disposing of it according to local regulations.
Regularly perform a water-finding test by dipping the tank. Checking the quality of your fuel is crucial, as poor-quality fuel can damage your tank and equipment. Use fuel additives to maintain fuel quality and pump performance, especially during periods of inactivity or storage.
Additionally, pay attention to fuel levels. Running on a near-dry tank can lead to sediment formation, which will block pumps and damage equipment. Check the fuel filters (strainers) regularly, as debris or sludge in the tank will clog the filters and damage pumps. Mesh filters are typically found at the end of each feed line inside the tank or near the butterfly valve (Y-type strainer). Internal strainers can be accessed by pulling out the flexible dip pipe from the cabinet.
Finally, maintain the pumping equipment. Check pumps, vents, valves, and filler caps weekly for any signs of leaks or damage. Remove filler caps and clean the threads with a wire brush if necessary. Apply a small amount of lithium grease to prevent rust buildup. Inspect the gasket at the bottom of the cap to ensure a good seal before refitting.
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Maintain and replace parts as needed
Maintaining and replacing parts of an auxiliary fuel tank are crucial steps in ensuring its proper functioning and preventing potential issues. Here are some detailed instructions for maintaining and replacing parts as needed:
Maintenance and Part Replacement
- Regular Inspections: Inspect the fuel tank and its components, including fuel lines, pumps, filters, and connections, at regular intervals. Check for leaks, corrosion, or damage. Look for signs of water or product in the interstitial space and remove any accumulation of rainwater, diesel, or waste, ensuring proper disposal as hazardous material.
- Fuel Level Checks: Maintain appropriate fuel levels. Running a tank too low can lead to sediment formation, clogging filters and damaging equipment.
- Filter Maintenance: Regularly replace the fuel filter as per the vehicle manufacturer's recommendations. Filters prevent dirt, debris, and rust from entering the engine, and a clogged filter can reduce fuel flow and harm engine performance.
- Pump Maintenance: Fuel pumps can wear out over time due to use and electrical problems. Inspect pumps during routine checks, and listen for any whining noises, engine stalling, or starting difficulties, which may indicate pump issues. Use fuel additives to maintain pump performance and avoid overfilling the tank to reduce strain on the pump.
- Vent and Valve Maintenance: Inspect vents and valves regularly to maintain proper fuel flow. Clean filler cap threads with a wire brush if necessary, and apply lithium grease to prevent rust buildup. Ensure the gasket at the bottom of the cap provides a good seal before refitting.
- Hinge Lubrication: Lubricate the hinges holding the cabinet cover or door to avoid rust and wear and tear.
- Storage: Store the fuel tank in a dry, ventilated area away from direct sunlight. Keep the area clear of debris and vegetation to easily identify any leaks or spills.
- Additives and Stabilizers: Use fuel additives to protect the fuel system, especially during summer to counteract heat effects. If storing the tank for an extended period, add a stabilizer to prevent fuel degradation.
- Seasonal Adjustments: Adjust maintenance routines based on the season. For example, use winter-grade fuel during winter to prevent gelling, and consider using a fuel line heater.
- Professional Help: For severe issues like significant fuel leaks, fuel system failures, or strong fuel odors, consult a certified mechanic for accurate diagnosis and solutions.
By following these maintenance procedures and replacing parts as necessary, you can help ensure the safe and efficient operation of your auxiliary fuel tank.
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Frequently asked questions
You should visually inspect your tank for leaks at least once a week. You should also carry out a water-finding test by dipping the tank weekly. Other parts of the tank should be checked less often, with some requiring physical checks only every six months.
You should check for leaks, corrosion, or damage. You should also check the fuel levels and the quality of the fuel. If you notice any severe fuel leakage, fuel system failure, engine performance issues, or strong fuel odours, you should consult a certified mechanic.
If you find a leak, you should remove any accumulation of water and diesel from the bund and secure cabinet. Any waste should be treated as hazardous and disposed of following local regulations. You should also consult your fuel supplier's Manufacturer Safety Data Sheet.
Common issues with auxiliary fuel tanks include corrosion, leaks, clogs, and pump issues. These issues can often be addressed by checking for damage, replacing faulty components, and cleaning the tank.
