Introduction to Removing a Stripped Torque Bolt
Removing a stripped torque bolt can be a frustrating experience, especially if the bolt is critical to the component’s function. Due to the bolt head being stripped, the usual tools may not grip the bolt properly. However, there are several methods you can employ to get the job done. Let’s look at the step-by-step approach to removing a stripped torque bolt.
Tools and Materials Needed
- Vise grips or locking pliers
- Bolt extractor set
- Drill and drill bits
- Hammer
- Center punch
- Lubricant (such as WD-40 or penetrating oil)
- Safety glasses
Initial Preparations
Before you start, make sure to clean the area around the bolt to allow for the best possible grip. Apply a penetrating lubricant generously to the bolt and let it sit for some time to loosen the corrosion, which can help in easing the removal process.
Step 1: Attempt with Vise Grips
First, try using a vise grip or locking pliers. Adjust the vise grips to fit tightly around the bolt head or the sides of the bolt if the top is too stripped. Once the grips are secure, attempt to turn the bolt counter-clockwise to see if this will get it loose.
Step 2: Use a Bolt Extractor
If the vise grips do not work, move on to a bolt extractor set. There are different types of extractors, but they all function similarly.
- Select the appropriate size extractor for the bolt and attach it to your socket wrench or drill. Make sure the extractor is inserted into the bolt head securely.
- Apply steady pressure and attempt to turn the bolt counter-clockwise. The reverse threads on the extractor should grip the stripped bolt and allow you to unscrew it.
Step 3: Drilling it Out
If the bolt head is too stripped for an extractor to work, you may need to drill the bolt out.
- Start by using a center punch to create a guide in the exact center of the bolt head.
- Select a drill bit that is smaller than the bolt’s shaft and attach it to your drill.
- Begin drilling slowly, straight into the head of the bolt. Work patiently and steadily.
- As you drill, the tension may relieve itself, and you might be able to remove the bolt with pliers or by hand.
If after drilling, the bolt still does not budge, you may need to drill out the entire bolt and retap the hole for a new bolt.
Step 4: Cleaning and Re-threading
After the bolt has been removed, clean out the hole thoroughly. If the threads within the hole were damaged during the removal process, you will need to re-thread it. This can be done using a tap and die set that matches the size and thread pattern of the hole.
Conclusion
Removing a stripped bolt requires patience and the correct tools. Always work slowly to avoid causing further damage to the surrounding material. Don’t hesitate to seek the help of a professional if the bolt is in a critical location or if you are unable to remove it yourself.
Remember to wear safety glasses during the process to protect your eyes from metal shavings, and ensure you dispose of the stripped bolt properly once removed.