Refueling Your Tranaxle: A Step-By-Step Guide

Changing the fuel in a transaxle can be a tricky and messy job, but it's important to keep your vehicle in good condition and prolong its life. A transaxle is a combination of gearbox and differential in a front-wheel-driven vehicle, and it's essential to follow the manufacturer's recommendations for service intervals. This typically involves draining the old fluid, cleaning and inspecting the transaxle, and then refilling it with new fluid. The process can vary depending on the vehicle, with some having drain plugs and others requiring the removal of the entire pan. It's also important to use the correct type and amount of fluid for your specific vehicle, as well as taking safety precautions when working on it.

Check the vehicle's service manual for the correct type of transmission fluid

It is important to check your vehicle's service manual for the correct type of transmission fluid. This is because transmission fluid plays a crucial role in lubricating, cooling, and cleaning the internal components of the transmission. It also helps maintain the hydraulic pressure necessary for the transmission to function properly.

Different vehicles may require different types of transmission fluid, so it is important to refer to the specific recommendations in your vehicle's manual. This will ensure that you use a fluid that is compatible with your vehicle's transmission system. Using the wrong type of fluid can lead to damage or reduced performance.

Additionally, the manual will provide information on how often the transmission fluid should be changed. This can vary depending on the vehicle manufacturer and the type of transmission. Some manufacturers recommend replacing the fluid at regularly scheduled intervals, while others may suggest doing so based on certain warning signs or performance issues.

By consulting the vehicle's service manual, you can ensure that you are using the correct type of transmission fluid and maintaining it properly, which is essential for the long-term health and performance of your vehicle.

Warm up the engine and idle for a few minutes before draining the fluid

Warming up the engine before draining the fluid is a recommended step when changing the transmission fluid in your car. This is because the fluid will be warmer and less viscous, so it will flow more easily and drain more quickly. This is especially important in colder climates, where the fluid may be thicker and harder to drain.

Running the engine for 5 to 10 minutes before draining will ensure the fluid is warm enough to flow smoothly. It is also important to park your vehicle on level ground before draining the fluid, as this will make the process easier and help ensure the fluid drains properly.

After warming up the engine, you can then proceed to drain the fluid. This typically involves removing the drain plug and allowing the fluid to drain into a suitable container. It is important to be careful when doing this, as the fluid will be hot and can cause burns if it comes into contact with skin. It is also important to note that you should not heat up the fluid if you are using a multi-grade oil, as the additives in these oils can expand and thicken when heated, which can affect the viscosity and volume of the fluid.

Once the fluid has been drained, you can then refill the transmission with fresh fluid. It is important to use the correct type of fluid for your vehicle, which can be found in the owner's manual or by contacting the dealership. Overfilling the fluid can cause problems, so it is important to add the correct amount. After refilling, it is recommended to take your car on a short drive and then recheck the fluid level to ensure it is correct.

Remove the bolts from one side of the transmission pan

To remove the bolts from one side of the transmission pan, you will need to follow a few steps. Firstly, locate the transmission pan and identify the bolts on one side that need to be removed. Make sure you have the necessary tools, such as a socket set or wrench, and place a container underneath the pan to catch any dripping fluids.

Loosen the bolts by turning them counter-clockwise, but be cautious as some bolts may be tight or stuck due to corrosion or damage. If a bolt is stuck, try using penetrating fluid and allowing it to soak before attempting to remove it again. You can also apply heat to the case and/or cool the bolt using a torch and ice spray. If the bolt still doesn't budge, use a breaker bar or impact wrench to apply more torque.

Once the bolts are loose, continue turning them counter-clockwise until they are completely removed. Set the bolts aside in a safe place so they don't get lost. With the bolts removed, you can now access the transmission pan and proceed with the next steps of your maintenance or repair task. Remember to work carefully and refer to a qualified mechanic or repair manual if you are unsure about any part of the process.

Clean the gasket surfaces on the pan and transmission housing

To clean the gasket surfaces on the pan and transmission housing, you will need to begin by removing the old gasket. This can be done using plastic tools to scrape away the old gasket material. As the pan is made of steel, you can use razors to remove the gasket without worrying about damaging the softer metal. Get as much of the gasket off as possible without spending too much time on it.

Next, you will want to use a razor blade (metal or plastic) mounted in a holder to remove any remaining residue. When using a razor blade, keep it at a flat, low angle to the surface to avoid creating gouges, and avoid using the corners of the blade. You can also use a wire brush to clean the gasket surface. A brass hand wire brush is a good option for cleaning the gasket surface safely and effectively.

It is important to protect your eyes and ears when using any type of power equipment during the cleaning process. Additionally, be sure to use a cleaner that doesn't leave any residue or oily finish, and always wear proper protection on your hands and eyes. You want the sealing surface to be clean and dry before installing the new gasket.

Install a new transmission filter and gasket

To install a new transmission filter and gasket, you will need to begin by safely raising your vehicle so that you can crawl under the transmission. Place a drain pan beneath the transmission oil pan and remove the drain plug, allowing the fluid to drain. Loosen and remove the bolts around the transmission pan, except for the corner bolts. Allow the rest of the fluid to drain.

Next, separate the oil pan from the transmission case using a small, flat screwdriver. The loosened corner bolts will allow the pan to hang and prevent fluid splashing. Remove the old transmission oil filter, noting its orientation, and replace it with a new one. Don't forget to also replace the filter gasket.

Now, use a gasket scraper to remove the old transmission oil pan gasket from both the pan and the transmission. Thoroughly clean the inside of the pan, paying attention to any magnet that may be present. Be on the lookout for any metal shavings or fragments adhering to the magnet, as this could indicate internal gear damage.

Place the new transmission pan gasket on the pan and lift the pan into place, ensuring it is oriented correctly. You can use a spray- or paint-on gasket adhesive to keep the gasket in place. Do not use any type of gasket sealer, as fragments could be ingested by the transmission's internals.

Finally, replace the bolts on the transmission oil pan, working in a star pattern from the corners to keep the pan from cocking. Do not over-tighten these bolts, as the metal of the pan will distort and allow fluid to leak out. Lower the vehicle.

Frequently asked questions