When working with bolts, it is important to understand the difference between a stuck bolt and a stripped bolt.
- A stuck bolt has an undamaged head and can happen due to dirt, rust, or paint on the threads. It can also occur if the bolt is cross-threaded.
- A stripped bolt has a damaged head and can result from using the wrong tool shape or size to install or remove the bolt. It can also happen when the correct tool is used but not fully seated in the bolt head when force is applied.
Preventing Bolt Head Damage
- Examine the bolt closely to ensure its threads are intact and free from rust, dirt, or grime.
- Inspect the mounting point for any signs of rust, dirt, or grime.
- If needed, use a paper towel and some isopropyl alcohol to clean the mounting point, then allow it to dry completely.
- Use the correct tools.
When tightening bolts, it is essential to use the correct tools to prevent damage or failure. Here are the steps to follow:
- Use a torque wrench and an appropriate tool shape and size for the bolt.
- Place the tool into the bolt head completely and turn it gradually.
- If the bolt head starts to strip, immediately stop installing the bolt, remove it, and replace it with a new one.
- Finally, torque the bolt to the recommended specification. Over-tightening the bolt can damage the bolt head, so be cautious not to over-tighten it.
Tools needed:
- Penetrating lubricant, such as WD-40
- Loctite or other anti-seize grease.
- Locking pliers, such as Vise-Grip
- Masking tape
- A rubber band or some fine steel wool
- A tool matching the bolt head style and size.
- Hair dryer
Please note the following steps to prepare your bike for maintenance:
- Turn off the bike, remove the battery, and press and hold the power button to discharge any remaining power.
Tips on How to remove the bolt.
2. Apply a penetrating lubricant, like WD-40, between the bolt head and the frame.
3. Tap the bolt head several times with a tool to encourage the lubricant to penetrate the threads.
4. Wait 20 minutes to allow the penetrating lubricant to work through any rust or grime on the bolt threads inside the mounting point.
5. If the bolt head is undamaged, follow the steps below to remove the bolt:
To remove a bolt, you can use heat as follows:
a. First, use a hair dryer on a high heat setting to apply heat to the bolt head for one to two minutes. Be careful not to touch the bolt head or surrounding bike parts, as the area will become very hot. Then, allow the bolt to cool completely. As the bolt cools, the metal will contract, and the bolt will pull material away from the mounting point, making it easier to remove.
b. Next, use the proper tool to remove the bolt. Firmly press the tool into the bolt head, applying pressure and turning slowly to loosen and remove the bolt.
c. If the bolt does not loosen, taking the bike to a local bike shop or mechanic for further assistance is best.
6. To remove a bolt with a stripped head.
To remove a bolt that is difficult to loosen, you can use extra friction. Here's how:
a. Place a rubber band or steel wool over the bolt head. Press the tool firmly into the rubber band or steel wool and the bolt head. This will provide extra grip for the tool, helping it to stay in place as you use it.
b. Firmly press the tool into the bolt head, applying pressure and turning slowly to loosen and remove the bolt.
c. If the bolt does not come loose, move on to the next step.
To remove the bolt, follow these steps:
- Apply tape to the area around the bolt to help protect it from possible damage.
- If possible, insert a tool in the bolt head and use pliers to remove the bolt. If there is not enough room for both the tool and pliers, use the pliers alone to try and remove the bolt.
- If the bolt does not loosen, taking the bike to a local bike shop or mechanic for further assistance is best.
7. After removing the bolt, replace it with a new bolt of the same size. Use Loctite or anti-seize grease to secure it.
8. Please reinstall the battery and conduct a full test of the bike to ensure that it is functioning properly.
