Thursday, November 30, 2023

Essential tools for AU Falcon alternator replacement

Are you planning to take on the task of replacing an alternator in your AU Falcon? This DIY job can be tricky and complex, but it doesn’t have to be. You can get the job done quickly and safely with the right tools and some know-how. In this blog post, we’ll cover the essential tools you need to replace an AU Falcon alternator and some tips and tricks to make the process go smoothly. So, let’s get started and revive your ride!

Why is the alternator important in an AU Falcon?

The alternator is an essential component of your AU Falcon’s electrical system. It plays a vital role in ensuring that your vehicle’s battery stays charged and that all the electrical systems, such as the lights, air conditioning, and power windows, function properly.  Without a functioning alternator, your AU Falcon will quickly run out of battery power and become immobile. A failing alternator can also cause issues such as dimming headlights, erratic power window operation, or even a complete electrical system failure.

In the AU Falcon, the alternator also serves as a power source for the ignition system, ensuring that your vehicle starts smoothly and runs efficiently. It keeps the battery charged and provides a constant flow of electricity to all the electrical components, keeping them functioning optimally.

Signs of a failing alternator in an AU Falcon

A dead or dying battery is one of the first signs of a failing alternator in an AU Falcon. If you need to jumpstart your vehicle frequently or if your battery doesn’t hold a charge for very long, it may be a clear indication that your alternator needs to keep the battery charged. Another sign to look out for is dimming or flickering headlights. As the alternator starts to fail, it may not be able to provide a consistent flow of electricity to the headlights, causing them to dim or flicker while driving at night.

If your power windows are acting erratically, such as moving slower than usual or stopping mid-way, it could result from a failing alternator. The alternator is responsible for providing power to the electrical components in your vehicle, and when it starts to malfunction, these components can start to act up. A warning light on the dashboard, often in the shape of a battery or a lightning bolt, is another clear indication of an alternator problem. This light usually comes on when the alternator is not functioning properly and is a signal for you to have checked.

What tools are essential for AU Falcon Generator replacement?

Having the right tools is crucial when replacing the alternator in your AU Falcon. Here are the essential tools you’ll need for a smooth and successful alternator replacement:

Socket Set

A quality socket set is necessary for removing and installing various bolts and nuts. Make sure you have a set that includes sockets in different sizes to fit the different components of the alternator.


You’ll need a combination wrench set or an adjustable wrench to loosen and tighten bolts and nuts that are difficult to reach with a socket set.


A set of screwdrivers, both Phillips and flathead, will come in handy for removing screws and connectors that hold the alternator in place.


Pliers will be needed for gripping and pulling out wires and removing any clips or clamps that secure the alternator.


A multi-meter is essential for testing the voltage and continuity of electrical connections before and after installing the new alternator.

Battery Terminal Puller

If you’re replacing the alternator, it’s a good idea also to check and clean the battery terminals. A battery terminal puller will make it easier to remove the terminals without causing any damage.AU Falcon alternator

A step-by-step guide to replacing the alternator in an AU Falcon

Now that you have gathered all the necessary tools, it’s time to dive into the step-by-step guide to replacing the alternator in your AU Falcon. Follow these instructions carefully, and your new alternator will be installed quickly.

  • Start by disconnecting the negative terminal of your vehicle’s battery to prevent any electrical shocks or short circuits.
  • Locate the alternator, usually positioned at the front of the engine. It has several electrical connections attached to the engine block by bolts.
  • Loosen the bolts that secure the alternator in place using your socket set. Once the bolts are loose, could you remove them and set them aside?
  • Next, disconnect the electrical connections from the alternator. These connections may include wires, cables, and connectors. Use your pliers and screwdrivers to carefully detach them without damaging any components.
  • With the connections removed, you can now remove the old alternator from the engine block. Gently lift it out, carefully not to scratch or damage any surrounding parts.
  • Before installing the new alternator, compare it to the old one to ensure they are identical in size and configuration.
  • Position the new alternator in place and secure it with the bolts you removed earlier. Tighten them using your socket set, but be careful not to overtighten and damage the threads.
  • Reconnect the electrical connections to the new alternator. Make sure all connections are secure and tight.
  • Finally, reconnect the negative terminal of your vehicle’s battery.

Testing the new alternator: What to check before hitting the road

Once you’ve successfully replaced the alternator in your AU Falcon, testing it before hitting the road is crucial. After all, you want to ensure that your vehicle’s electrical system is working optimally and that you won’t encounter any unexpected issues during your drive. Here are a few important things to check after installing a new alternator:

  1. Battery Voltage: Use a multi-meter to measure the voltage of your vehicle’s battery. A healthy battery should read around 12.6 volts. If it’s significantly lower, it may indicate that the alternator isn’t properly charging the battery.
  2. Charging System: Start the engine and turn on all electrical components, such as headlights, air conditioning, and radio. Monitor the voltage on the multi-meter while the engine is running. A functioning alternator should maintain a voltage between 13.5 and 14.5 volts, indicating it effectively charges the battery.
  3. Electrical Systems: Test all the electrical systems in your vehicle, including headlights, power windows, air conditioning, and dashboard lights. Make sure they’re functioning correctly and that there are no issues such as dimming or flickering.
  4. Belt Tension: Check the tension of the alternator belt. It should be tight enough to prevent slipping but not so tight that it puts excessive strain on the alternator.

Common mistakes to avoid during AU Falcon alternator replacement

Replacing an alternator in an AU Falcon can be challenging, especially for those not experienced in automotive repairs. To ensure a smooth and successful alternator replacement, it’s important to avoid common mistakes that can lead to further damage or complications. Here are some mistakes to avoid during the AU Falcon alternator replacement:

Skipping proper preparation

Before diving into the replacement process, take the time to gather all the necessary tools and review the repair manual or online resources for guidance. Skipping this step can lead to confusion and mistakes during the replacement process.

Neglecting safety precautions

Safety should always be a priority when working on any vehicle. Make sure to disconnect the battery’s negative terminal before starting any work. Use proper safety gear such as gloves and eye protection to prevent injury.

Failing to identify the root cause

Before replacing the alternator, it’s essential to identify the root cause of the issue. A faulty battery, loose connections, or a broken belt can sometimes mimic alternator failure symptoms. By properly diagnosing the problem, you can avoid unnecessary replacement costs.

Forgetting to inspect related components

While replacing the alternator, it’s a good idea to inspect related components such as the belt, tensioner, and pulleys. These parts may also be worn or damaged, and replacing them with the alternator can prevent future issues.

Improper installation

Ensure the new alternator is properly aligned and securely fastened. Incorrect installation can lead to belt misalignment, inadequate charging, or damage to the alternator.

Ignoring testing after replacement

Once the new alternator is installed, testing the electrical systems and checking for proper charging voltage is crucial. Ignoring this step can cause unnoticed issues that further damage your vehicle’s electrical system.

Preventative maintenance for a healthy AU Falcon alternator

Preventative maintenance is crucial to ensure your AU Falcon generator’s long-term health and performance. Following a few simple maintenance practices can keep your alternator in top shape and avoid unexpected breakdowns. Here are some preventative maintenance tips for a healthy AU Falcon generator:

  1. Regularly check the belt tension: Over time, the alternator belt can become loose or worn, affecting the alternator’s performance. Check the belt tension regularly and adjust it if necessary. A properly tensioned belt ensures optimal power transfer from the engine to the alternator.
  2. Keep the alternator clean: Dirt and debris can accumulate on the alternator, hindering its performance. Regularly clean the alternator using a soft brush or compressed air to remove any built-up dirt. Be cautious not to damage any electrical connections while cleaning.
  3. Inspect the electrical connections: Check the electrical connections on the alternator for any signs of corrosion or looseness. Clean any corrosion with a wire brush and ensure all connections are secure and tight.
  4. Maintain a healthy battery: A weak or faulty battery can put additional strain on the alternator. Keep your battery properly maintained by checking the fluid levels, cleaning the terminals, and ensuring it is fully charged. A healthy battery helps the alternator operate efficiently.
  5. Avoid excessive electrical loads: Excessive electrical accessories, such as high-powered audio systems or aftermarket lighting, can strain the alternator. Minimize the use of these accessories, especially when the engine is idling or at low RPMs.


We understand that replacing an alternator in an AU Falcon can be daunting, especially if you need to

Q: How long does replacing an alternator in an AU Falcon take?

A: The time it takes to replace an alternator can vary depending on your experience level and the specific circumstances. On average, it can take anywhere from 1 to 3 hours.

Q: Can I replace the alternator in my AU Falcon, or do I need a professional?

A: It is possible to replace the alternator yourself if you have the necessary tools and knowledge. However, it’s always best to consult a professional mechanic if you need more confidence in your abilities or the proper equipment.

Q: How much does replacing an alternator in an AU Falcon cost?

A: A new alternator for an AU Falcon can range from $100 to $400, depending on the brand and quality. Additional costs may include labor fees if you replace it with a professional.

Q: How often should I replace the alternator in my AU Falcon?

A: The lifespan of an alternator can vary, but on average, it can last anywhere from 80,000 to 150,000 miles. However, regular maintenance and proper care can help prolong its lifespan.


In conclusion, replacing the alternator in your AU Falcon doesn’t have to be daunting. By arming yourself with the essential tools and following a step-by-step guide, you can successfully revive your ride and ensure a healthy electrical system. Remember, the alternator is a critical component that keeps your vehicle running smoothly and powers all your electrical systems. Pay attention to signs of a failing alternator and address any issues promptly to avoid further damage.

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