How To Get Air Out Of A Grease Gun In 2023

Why is it important to get air out of a grease gun?

A grease gun is an essential tool for lubricating various machinery and equipment. It allows you to apply grease precisely and efficiently, ensuring optimal performance and longevity of the components. However, air can sometimes get trapped inside the grease gun, causing disruptions in the lubrication process. This can result in uneven application and potential damage to the equipment. Therefore, it is crucial to know how to remove air from a grease gun to ensure smooth and effective lubrication.

Steps to get air out of a grease gun:

1. Gather the necessary tools

Before you start, make sure you have the following tools handy:

  • A grease gun
  • A grease cartridge
  • A clean cloth or rag

2. Prepare the grease gun

First, ensure that the grease gun is clean and free from any dirt or debris. Wipe the exterior of the grease gun with a clean cloth or rag to remove any contaminants that could potentially mix with the grease.

3. Load the grease cartridge

Next, load a fresh grease cartridge into the grease gun. Follow the manufacturer’s instructions for your specific grease gun model to ensure proper loading.

4. Prime the grease gun

Now, it’s time to prime the grease gun to remove any air trapped inside. To do this, locate the air release valve on the grease gun, usually located near the head of the gun. Open the valve by turning it counterclockwise to release any air pressure.

5. Pump the grease gun

With the air release valve open, start pumping the grease gun handle until you see grease emerging from the nozzle. This process helps push the remaining air out of the gun and ensures that only grease is dispensed during lubrication.

6. Close the air release valve

Once you see a steady stream of grease coming out of the nozzle, close the air release valve by turning it clockwise. This prevents any air from entering the grease gun during the lubrication process.

7. Test the grease gun

Before using the grease gun on your machinery or equipment, it is a good practice to perform a quick test to ensure proper functionality. Squeeze the trigger or handle of the grease gun and observe the flow of grease. If it appears consistent and without any air bubbles, you have successfully removed the air from the grease gun.

Additional Tips:

1. Regular maintenance

To prevent air from getting trapped in your grease gun, it is essential to perform regular maintenance. This includes cleaning the gun after each use, inspecting the cartridge for any damage or contamination, and ensuring proper storage of the gun and cartridges.

2. Use quality grease cartridges

Invest in high-quality grease cartridges from reputable brands to minimize the risk of air getting trapped. Cheaper or inferior cartridges may have poor seals or inconsistent grease flow, leading to air entrapment.

3. Seek professional assistance

If you are unsure about how to remove air from your grease gun or encounter any issues during the process, do not hesitate to seek professional assistance. They can provide guidance and ensure that your grease gun is in optimal working condition.


Removing air from a grease gun is a simple yet essential process to ensure smooth and effective lubrication. By following the steps outlined above and implementing regular maintenance practices, you can maximize the performance and lifespan of your machinery and equipment. Remember to always prioritize safety and consult professionals when needed to ensure the best results.

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