Dorman 64740 Battery Terminal T-Bolt Instruction Manual

1. Product Overview

The Dorman 64740 Battery Terminal T-Bolt is a direct replacement component designed to match the fit and function of the original part on specified vehicles. Manufactured from quality materials, this T-bolt is engineered to provide reliable performance and a long service life in automotive battery applications.

Figure 1: Main view of the Dorman 64740 Battery Terminal T-Bolt.

2. What's in the Box

• One (1) Dorman 64740 Battery Terminal T-Bolt

3. Installation

This T-bolt is intended as a direct replacement for an original battery terminal T-bolt that may be missing or has failed due to fatigue. Ensure the part fits your specific vehicle by verifying compatibility before installation.

3.1. Pre-Installation Check

• Verify that the Dorman 64740 T-bolt matches the dimensions and thread type of the original part being replaced.
• Ensure the vehicle's battery is disconnected and appropriate safety measures are taken before working on electrical components.

3.2. Installation Steps

1. Carefully remove the old or damaged T-bolt from the battery terminal clamp.
2. Apply a small amount of anti-seize compound to the threads of the new Dorman 64740 T-bolt to prevent seizing over time.
3. Insert the new T-bolt into the battery terminal clamp.
4. Tighten the nut onto the T-bolt to secure the battery terminal connection. The recommended torque specification is approximately 11 ft/lbs (14.9 Nm). Avoid over-tightening, as this can damage the bolt or the terminal.
5. Reconnect the battery, ensuring all connections are secure.

Figure 2: Front view of the T-bolt, showing the threaded shaft.

4. Function and Operation

The Dorman 64740 Battery Terminal T-Bolt serves as a critical fastening component for securing the battery cable to the battery terminal. Its T-shaped head slides into a slot on the battery terminal clamp, and the threaded shaft allows a nut to be tightened, creating a secure electrical connection. Proper tightening ensures optimal current flow and prevents power interruptions.

Figure 3: Back view of the T-bolt, illustrating the T-head design.

5. Maintenance

While the Dorman 64740 T-bolt is designed for durability, periodic inspection and maintenance can prolong its service life and ensure reliable battery connections.

• Corrosion Check: Regularly inspect the T-bolt and surrounding battery terminal for signs of corrosion. Clean any corrosion using a battery terminal brush and a baking soda solution.
• Tightness Check: Periodically check the tightness of the T-bolt connection. Vibrations and temperature changes can sometimes cause fasteners to loosen. Re-torque to 11 ft/lbs if necessary.
• Anti-Seize Application: If the T-bolt needs to be removed and reinstalled, reapply anti-seize compound to the threads to prevent future seizing, especially in stainless steel on stainless steel applications.

Figure 4: Side view of the T-bolt, showing the full length of the bolt and nut.

6. Troubleshooting

If you experience issues with your battery terminal connection after installing the Dorman 64740 T-bolt, consider the following:

• Loose Connection: If the battery connection feels loose or intermittent power issues occur, re-check the torque of the T-bolt. Ensure it is tightened to the specified 11 ft/lbs.
• Corrosion: Excessive corrosion can lead to poor electrical contact. Clean the terminal and T-bolt thoroughly as described in the Maintenance section.
• Improper Fit: If the T-bolt does not sit securely or cannot be tightened properly, re-verify that the part is compatible with your specific vehicle's battery terminal.
• Damaged Threads: If the bolt spins freely without tightening, the threads on the bolt or the nut may be stripped. Replace the affected component. Note that repeated loosening and re-tightening (more than 20 times) can cause fatigue and breakage.

7. Specifications

8. Warranty and Support

Dorman products are backed by a team of product experts and over a century of automotive experience, ensuring trustworthy quality. For specific warranty information or technical support, please refer to the official Dorman website or contact Dorman customer service directly.

You can visit the Dorman Store for more information: Dorman Official Store