Tools You'll Likely Need:
* Jack and jack stands: Safely support the vehicle.
* Wheel chocks: Essential for safety.
* Sockets and wrenches: Various sizes to fit axle nuts, bolts, and transmission drain plug.
* Transmission jack or engine hoist: To support the transmission once it's partially disconnected. A transmission jack is highly recommended.
* Penetrating oil (like PB Blaster): To loosen rusted or seized bolts and nuts.
* Torque wrench: To tighten bolts to the correct specifications.
* Drain pan: To catch transmission fluid.
* Gloves and safety glasses: For protection.
Procedure:
1. Safety First: Park on a level surface, engage the parking brake, and chock the wheels. Disconnect the negative battery terminal.
2. Drain Transmission Fluid: Locate the transmission drain plug (usually on the bottom of the transmission) and carefully drain the fluid into your drain pan.
3. Disconnect Drive Shafts: This is the crucial step. You'll need to:
* Support the transmission: Use a transmission jack to support the transmission's weight. This is vital to prevent it from falling and causing damage.
* Locate the axle nuts: These are usually large nuts on the ends of the axles where they connect to the transmission.
* Remove the axle nuts: Use a socket wrench and apply penetrating oil if necessary. Important: Sometimes, it's helpful to use a breaker bar for extra leverage.
* Separate the axles from the transmission: Once the nuts are off, the axles may simply slide out. However, on some vehicles, they might be held in place by a retaining clip or C-clip inside the transmission case. Your repair manual will be crucial here to identify if there are any retaining clips and how to remove them safely. You may need to gently tap on the axle housing to separate it from the transmission. Be careful not to damage the transmission case.
4. Disconnect Transmission: Once the axles are removed, you can proceed to disconnect the rest of the transmission from the engine and vehicle. This typically involves disconnecting the linkage, shift cables, and any other connected components. Again, your repair manual is your best guide here.
5. Remove Transmission: With the axles and other connections disconnected, carefully lower the transmission using the transmission jack.
Important Considerations:
* Retaining Clips/C-Clips: The biggest potential snag is the presence of retaining clips or C-clips inside the transmission case that hold the axles in place. These are easily damaged if you're not careful. Your repair manual will show you their location and how to remove them.
* Axle Seals: When reinstalling the transmission, you'll likely need to replace the axle seals to prevent leaks.
* Manual vs. Automatic: The procedure might vary slightly depending on whether your Colt has a manual or automatic transmission. Your repair manual will clarify this.
Disclaimer: This information is for general guidance only. Always consult a repair manual specific to your 1990 Dodge Colt with a 15L engine before attempting any repairs. Improper procedures can lead to damage to your vehicle and potential injury. If you are not comfortable performing this repair yourself, take your vehicle to a qualified mechanic.
