Introduction
In this comprehensive guide, we will dive into the process of replacing the valve body in a Subaru TR580 CVT (Continuously Variable Transmission). If you notice a failed solenoid in your valve body, don’t panic! We’ve got you covered. It’s time to roll up your sleeves and save some money by doing this repair yourself. We will cover everything you need to know, from removing components to installing the new valve body. So let’s get started!
Why Choose the TR580?
One of the advantages of the TR580 transmission is the ease of replacing the valve body compared to other models like the TR-690. Unlike the TR-690, where the valve body is underneath the transmission, the TR580’s valve body is conveniently located on top, allowing for easier access and repairs. You won’t have to crawl under the car until you’re ready to change the CVT fluid.
Getting Started
Before diving into the repair, it’s crucial to always loosen and remove the negative battery terminal. This minimizes the risk of any electrical accidents or damage during the repair process.
Removing the Air Intake Duct
Start by removing the air intake duct. Use an appropriate tool to remove the eight-millimeter worm gear clamps on either side. Additionally, remove any plastic push pins or bolts securing the duct. This will provide easier access to other components.
Removing the Throttle Body
Next, remove the throttle body. Disconnect the electrical pigtail and set it aside. Release the four ten-millimeter bolts holding the throttle body to the intake manifold. Be sure to pinch and remove the coolant hoses located at the bottom of the throttle body.
Removing the Pitch Stopper
Following the throttle body removal, take out the pitch stopper. Remove the 14-millimeter bolt and nut securing it, and detach the ground wire. Unbolt the pitch stop bracket from the transmission as well.
Accessing the Valve Body
To access the valve body, first, remove the cover. You’ll need to remove several bolts, including a 10-millimeter bolt for a harness bracket and a grounding wire bolt. Set these aside carefully. Gradually pry up the cover, ensuring not to damage the aluminum material. Take note of any wiring harnesses present and remove them gently.
Once the cover is removed, it is essential to clean the surrounding area thoroughly to prevent any debris from falling into the transmission.
Removing the Old Valve Body
Now, it’s time to remove the old valve body. Remove the nine bolts securing it in place. Be prepared as some CVT fluid may spill during this process. Lift the old valve body out carefully, ensuring not to spill any more fluid.
Replacing O-Rings and Installing the New Valve Body
Before installing the new valve body, it is crucial to replace the two O-rings located behind the air conditioning line. Use proper lubrication with CVT fluid and firmly place the new O-rings in position.
It is possible to use a Subaru special tool, a large plastic sheet with a hole, to prevent falling debris. However, exercise caution when using this tool. Now, move the new valve body into place, being careful not to disturb the O-rings. Temporarily tighten the bolts and tighten them properly once all of them are in place.
Applying Adhesive Sealant and Installing the New Gasket
Clean the sealing surface of the transmission and the pan thoroughly, ensuring they are free from fluid residue. Apply a small amount of three bond adhesive sealant or an equivalent such as ultra gray or ultra black from Permatex to the designated ovals on the gasket.
Carefully position the new gasket on the alignment dowels, ensuring it is aligned correctly. Apply the adhesive sealant as instructed. Clean and dry the cover’s sealing surface before reconnecting the valve body connector and placing the cover back onto the alignment dowels. Install the 12 bolts and torque them to the appropriate specifications.
Finishing Touches
Securely reconnect any harnesses that were previously removed and reinstall the ground wire. Make sure all connections are secure and tight. Finally, reinstall any components that were removed earlier, such as the throttle body and the air intake duct.
Conclusion
Congratulations! You have successfully replaced the valve body in your Subaru TR580 transmission. By following these step-by-step instructions, you saved yourself time and money. It’s always satisfying to complete a repair yourself, especially when it’s as crucial as the valve body replacement. Remember to take safety precautions, such as removing the negative battery terminal before starting any major repair.
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So, go ahead and tackle that valve body replacement confidently. Your Subaru is ready to hit the road again!
