How to Pull a Transmission from a Car
Introduction
Pulling a transmission from a car is a major automotive repair that requires specific tools, knowledge, and safety precautions. This guide will provide step-by-step instructions on how to safely and effectively remove a transmission from a vehicle.
Before beginning, gather the necessary tools and materials:
* Jack and jack stands
* Transmission jack
* Socket wrench set
* Screwdrivers
* Pliers
* Transmission fluid pan
* New transmission fluid
* Filter
* Gasket
Safety Precautions
* Park the car on a level surface and engage the parking brake.
* Wear appropriate safety gear including gloves, safety glasses, and a mask.
* Disconnect the negative terminal of the battery to prevent electrical hazards.
* Allow the engine to cool before beginning work to avoid burns.
Step 1: Drain the Transmission Fluid
* Place a transmission fluid pan under the transmission.
* Locate the transmission fluid drain plug and remove it using a socket wrench.
* Allow all of the fluid to drain into the pan.
* Replace the drain plug and tighten it securely.
Step 2: Remove the Driveshaft
* Disconnect the driveshaft from the transmission using a socket wrench.
* Mark the position of the driveshaft on the transmission and rear axle for easy reassembly.
* Remove the driveshaft and set it aside.
Step 3: Disconnect the Electrical Connectors
* Locate and disconnect all electrical connectors from the transmission. These connectors may include the shift solenoid, speed sensor, and transmission control module (TCM).
Step 4: Remove the Starter Motor
* Locate the starter motor and remove its mounting bolts.
* Disconnect the electrical connectors from the starter motor.
* Remove the starter motor and set it aside.
Step 5: Remove the Torque Converter
* Locate the torque converter bolts and remove them using a socket wrench.
* Use a pry bar to carefully pry the torque converter away from the transmission.
* Note: The torque converter may contain a small amount of fluid, so use caution when removing it.
Step 6: Support the Transmission
* Position the transmission jack under the transmission.
* Slowly raise the transmission using the jack to support its weight.
Step 7: Disconnect the Transmission Mounts
* Locate the transmission mounts and remove their bolts using a socket wrench.
* Carefully lower the transmission until it rests on the jack.
Step 8: Remove the Transmission
* Carefully slide the transmission out from under the vehicle.
* Note: The transmission can be heavy, so it may require assistance to remove it.
Step 9: Inspect the Transmission
* Once the transmission is removed, inspect it for any damage or leaks.
* Check the condition of the filter and gasket.
* If necessary, replace the filter and/or gasket.
Step 10: Reinstall the Transmission
* Apply a thin layer of gasket sealant to the new gasket.
* Position the new gasket on the transmission.
* Carefully lift the transmission into place and align it with the engine.
* Tighten the transmission mounts and torque the bolts to specification.
Step 11: Install the Torque Converter
* Align the torque converter with the transmission.
* Carefully slide the torque converter onto the transmission until it engages with the splined shaft.
* Install the torque converter bolts and tighten them to specification.
Step 12: Install the Starter Motor
* Position the starter motor in place and tighten its mounting bolts.
* Connect the electrical connectors to the starter motor.
Step 13: Install the Driveshaft
* Align the driveshaft with the transmission and rear axle.
* Install the driveshaft and tighten its bolts to specification.
Step 14: Reconnect the Electrical Connectors
* Reconnect all electrical connectors to the transmission.
Step 15: Fill with Transmission Fluid
* Remove the transmission fluid pan from the transmission.
* Replace the filter with a new one.
* Apply a thin layer of gasket sealant to the new gasket.
* Install the new gasket and pan on the transmission.
* Fill the transmission with the specified amount of transmission fluid.
* Check the fluid level and top off as necessary.
Step 16: Connect the Battery
* Reconnect the negative terminal of the battery.
Step 17: Start the Vehicle
* Start the vehicle and let it run for a few minutes to circulate the transmission fluid.
* Check for any leaks or unusual noises.
* If everything is operating properly, test drive the vehicle to ensure the transmission is shifting smoothly.
Additional Tips
* If the transmission is heavy, use a transmission jack or an engine hoist to support it.
* Be careful not to damage the transmission case or other components during removal and installation.
* Clean all mating surfaces before installing the new gasket.
* Torque all bolts to specification to prevent leaks or damage.
* Check the transmission fluid level regularly and change it according to the manufacturer’s recommended intervals.
Conclusion
Pulling a transmission from a car can be a challenging task, but following these step-by-step instructions can help ensure a successful outcome. By taking proper safety precautions, using the right tools, and carefully following the steps, you can safely and effectively remove the transmission from your vehicle.