Expert Secrets Revealed: The Ultimate Guide on How to Get Control Arm Bolts Out

Replacing control arm bushings or even the entire control arm itself often involves removing the control arm bolts. These bolts can be notoriously stubborn, especially after years of exposure to the elements. This blog post will guide you through the process of removing control arm bolts, providing you with the knowledge and techniques to tackle this common automotive repair challenge.

Understanding the Importance of Control Arm Bolts

Control arm bolts are crucial for connecting the control arm to the vehicle’s chassis. These bolts play a vital role in maintaining the suspension’s stability and ensuring proper wheel alignment. When these bolts become rusted or seized, they can make removing the control arm a frustrating experience.

Essential Tools for the Job

Before you attempt to remove control arm bolts, gather the necessary tools. Here’s a list of essential items:

• Breaker Bar: A breaker bar provides the leverage needed to loosen stubborn bolts. Choose a breaker bar that is long enough to provide ample torque.
• Socket Set: You’ll need a socket that fits the size of the control arm bolts. The most common sizes are 15mm, 17mm, and 19mm.
• Wrench: Use a wrench to hold the bolt head while you turn the breaker bar.
• Penetrating Fluid (PB Blaster, WD-40): Penetrating fluid helps loosen rusted bolts by breaking down corrosion.
• Hammer: A hammer can be used to tap on the bolt head or socket to help break loose stubborn bolts.
• Torque Wrench: Once you’ve successfully removed the control arm bolts, use a torque wrench to tighten them to the manufacturer’s specifications.

Preparing for the Removal Process

1. Safety First: Always prioritize safety. Use jack stands to support the vehicle securely. Never work under a vehicle supported only by a jack.
2. Clean the Area: Remove any dirt, debris, or rust from around the bolt head. This will allow for better contact with the socket.
3. Apply Penetrating Fluid: Liberally spray penetrating fluid onto the bolt head and around the threads. Allow it to sit for at least 15 minutes to penetrate the corrosion.

Techniques for Removing Stubborn Control Arm Bolts

• Heat: If the bolt is still resistant, try applying heat to the bolt head. Use a heat gun or torch, but be careful not to overheat the surrounding components. Heat can help expand the metal and loosen the bolt.
• Impact Wrench (with caution): An impact wrench can provide significant torque. However, use it with caution as excessive force can damage the bolt or surrounding components.
• Tap the Bolt Head: Gently tap the bolt head with a hammer to break loose any rust or debris that may be preventing the bolt from turning.
• Use a Longer Breaker Bar: If the breaker bar isn’t long enough to provide sufficient leverage, try using a longer one.
• Consider a Bolt Extractor: In extreme cases where the bolt is severely rusted or damaged, a bolt extractor may be necessary. Bolt extractors are specialized tools designed to remove broken or stripped bolts.

Extracting a Broken Bolt

If a control arm bolt breaks during the removal process, you’ll need to extract it. Here’s how:

1. Drill a Hole: Drill a hole slightly smaller than the diameter of the broken bolt. Be sure to drill straight down to avoid damaging the surrounding threads.
2. Use an Easy-Out: Insert an easy-out tool into the hole you drilled. An easy-out is a specialized tool designed to remove broken bolts.
3. Apply Pressure: Use a wrench to turn the easy-out counterclockwise to remove the broken bolt. Be careful not to overtighten the easy-out, as it could break.

Replacing Control Arm Bolts

Once you’ve removed the old bolts, it’s crucial to replace them with new ones. Here are some tips:

• Use High-Quality Bolts: Choose high-quality bolts made from a strong material, such as steel or stainless steel.
• Proper Lubrication: Apply a thin layer of anti-seize lubricant to the threads of the new bolts. This will help prevent them from seizing in the future.
• Tighten to Spec: Use a torque wrench to tighten the new bolts to the manufacturer’s specifications. Overtightening can damage the threads or surrounding components.

Final Thoughts: A Smooth Journey Ahead

By following these steps, you can successfully remove control arm bolts. Remember to be patient and persistent, and don’t hesitate to seek professional help if you encounter any difficulties.

What You Need to Learn

Q: How often should I replace control arm bolts?

A: Control arm bolts are typically designed to last the life of the vehicle. However, if you notice any signs of rust, corrosion, or damage, it’s best to replace them.

Q: Can I reuse old control arm bolts?

A: It’s generally not recommended to reuse old control arm bolts, especially if they show signs of wear or damage. Using new bolts ensures proper fit and strength.

Q: What happens if I don’t tighten the control arm bolts properly?

A: Improperly tightened control arm bolts can lead to loose suspension components, which can result in poor handling, noise, and even safety hazards.

Q: What if I can’t get the control arm bolt out?

A: If you’re unable to remove the bolt, it’s best to seek professional help from a qualified mechanic. They have the tools and expertise to handle challenging situations.

Q: Is it possible to prevent control arm bolts from seizing?

A: Yes, applying a thin layer of anti-seize lubricant to the threads of the bolts during installation can help prevent them from seizing in the future.