1. Safety First:
* Wear safety glasses: Transmission fluid is messy and can cause eye irritation.
* Gloves: Protect your hands from the fluid.
* Work in a well-ventilated area: Transmission fluid has a strong odor.
* Have absorbent materials ready: Shop towels, rags, or kitty litter to soak up spills.
* Jack and support the vehicle properly: Use jack stands, never rely solely on a jack.
* Disconnect the negative battery terminal: This prevents accidental shorts.
2. Locate the Cooler Lines:
The transmission cooler lines typically connect to the transmission near the radiator. You'll likely find fittings on the transmission itself and the radiator. There might also be a transmission cooler in the radiator. Examine the lines carefully to trace their route and identify all connection points.
3. Prepare for Fluid Loss:
* Have a drain pan ready: Position it under the lines to catch the draining fluid. The amount of fluid lost will be minimal, but it's better to be prepared.
4. Disconnect the Lines:
* Locate the fittings: These are usually clamped connections or flare fittings.
* Clamped Connections: Use pliers or a clamp tool to loosen and remove the clamps. Then, carefully pull the lines apart.
* Flare Fittings: You'll likely need a flare nut wrench (specifically sized for the fitting) to loosen and remove the fittings. These require a firm but controlled turn. Avoid applying excessive force, as you could strip the fitting. Work on one fitting at a time.
5. Remove the Lines:
Once the fittings are disconnected, gently remove the lines. They may be stiff, so use care to avoid bending or kinking them.
6. Clean the Fittings:
After removing the lines, clean the fittings on both the transmission and the cooler to remove any debris that could obstruct proper sealing.
7. Reinstallation (if applicable):
Reinstallation is the reverse of removal. Remember to tighten the fittings to the correct torque specification, as found in your vehicle's repair manual. Don't overtighten.
Important Considerations:
* Type of Fluid: Note the type and amount of transmission fluid that drains out. You'll need the correct type to refill.
* Refilling: After reinstallation (if applicable), you'll likely need to add more transmission fluid. Refer to your owner's manual for the correct procedure and amount. It's advisable to have this done by a qualified mechanic.
* Professional Help: If you're not comfortable performing this task, it's best to have a qualified mechanic do it for you. Improperly removing or reinstalling these lines can damage the transmission.
This is a simplified explanation. The exact procedure may vary slightly depending on your specific vehicle and the configuration of the transmission cooler system. Always consult your repair manual before attempting this repair. Incorrect procedures can lead to leaks and transmission damage.
