An accurate gauge is essential to monitoring your home fuel-oil consumption and preventing overfilling by the oil company. If your existing gauge is stuck or showing inaccurate readings, replacement gauges are inexpensive and readily available. Replacing the gauge in a fuel-oil tank requires only basic tools and can be accomplished in a matter of minutes.
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Things you need
- Wire brush
- Penetrating oil
- Stillson wrench
- Thread sealing compound
Clean any dirt or debris away from the gauge in the top of the fuel-oil tank.
Use a wire brush to remove any paint or sealant away from the base of the fuel gauge. Spray penetrating oil on the base of the fuel gauge and allow it to soak into the threads for several minutes.
Tighten a Stillson wrench securely on the hex-shaped base of the fuel gauge and turn the gauge counterclockwise to remove it from the oil tank. Pull the gauge straight up out of the tank until the pivot point that attaches the float arm is visible in the gauge opening. Turn the gauge tube until the float arm is pointing straight down into the tank then pull the float arm and float straight up out of the tank through the gauge opening.
Hold the float arm on the new gauge up so it is parallel to the gauge tube and slide both into the gauge opening in the top of the tank. Make sure that the float arm unfolds once it clears the edge of the gauge opening.
Coat the threads of the new gauge with a thin layer of thread sealant and screw the gauge into the gauge opening, turning it clockwise until it is finger tight. Use a Stillson wrench to tighten the gauge an additional 1/2 turn.
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