Why Won't My Crosman Benjamin 397 Pump Rifle Hold Air?

Many Crosman Benjamin 397 owners have encountered issues with their rifle not holding air. This can be frustrating, especially when you are planning to use your air rifle for target practice or hunting. Fortunately, there are several steps you can take to troubleshoot and potentially resolve the problem.

Identifying the Issue

According to Brett, the most common cause of this issue is a failed seal. This can happen for a variety of reasons, including regular use, age of the rifle, and exposure to varying environmental conditions. Let's explore the potential causes and solutions in detail.

Possible Causes and Solutions

Seal Failure

The most typical reason your Crosman Benjamin 397 can't hold air is due to a seal that has failed. This can occur for two main reasons:

Overcharging: If you are consistently charging the air rifle to its maximum capacity, it can cause the seal to degrade over time. Frequent overcharging should be avoided. Dryness: As time passes, the seal can dry out, especially if the rifle is stored in a dry environment or if the conditions are typically hot and dry. Environmental factors can also contribute to the deterioration of the seal.

Troubleshooting Steps

If you suspect that your seal is the issue, try the following steps:

Inspect the Seal: First, visually inspect the seal to see if there are any visible signs of damage or wear. This can give you a good indication of whether the seal is the cause of the problem. Oiling the Rifle: Apply a few drops of oil to the seal area and let it sit overnight. The oil can help lubricate the seals and potentially improve the air retention. Make sure to clean off any excess oil in the morning before checking the air retention. Check the Rifle: After allowing the oil to sit overnight, check if the rifle now holds air. If the issue is resolved, you can continue using your rifle. However, if the problem persists, you may need to consider replacing the seal.

Replacing the Seal

If your crossman Benjamin 397 still doesn't hold air after trying the above steps, it is likely that the seal needs to be replaced. Here are the steps to follow:

Purchase the Correct Seal: You can find replacement seals from Crosman or other reputable airgun retailers. Be sure to order the correct type of seal that fits your Crosman Benjamin 397 rifle. Disassemble the Rifle: Take your rifle apart following the instructions in the manual or online resources. It is important to know exactly where the seals are located so that you can replace them correctly. Install the New Seal: Carefully clean the seal area to ensure a clean and dry installation. Place the new seal in the proper position and reassemble the rifle. Test the Rifle: Once the rifle is reassembled, test it to see if the problem has been resolved. Ensure the rifle holds air and functions properly.

Preventive Measures

To prevent issues with air retention in your Crosman Benjamin 397 pump rifle, consider the following tips:

Regular Inspection: Regularly inspect your rifle for signs of wear, especially the seals. While you're at it, you can also apply a small amount of air rifle oil to the seals to keep them lubricated and functioning well. Avoid Overcharging: Try to avoid overcharging the rifle, as this can lead to premature wear on the seals. If you notice that the rifle is losing air quickly after being charged, it might be a good idea to reduce the charging pressure. Proper Storage: Store your rifle in a cool, dry place to prevent the seals from drying out. Keeping the rifle in a garage or other hot, dry environment can contribute to seal failure.

Conclusion

Proper maintenance and understanding the causes of air retention issues can help you keep your Crosman Benjamin 397 pump rifle in top condition. By following the steps outlined in this article, you can troubleshoot and, if necessary, replace the seals to restore your rifle's functionality. Regular inspection and proper care will help ensure that your rifle remains air tight and ready for use.