Here's a general outline of the process. Specific steps will vary greatly depending on the make, model, and year of the vehicle. Always consult a repair manual specific to your vehicle.
1. Safety First:
* Disconnect the battery: This prevents accidental shorts and electrical hazards.
* Use appropriate safety equipment: This includes gloves, safety glasses, and potentially a respirator if dealing with fluids or debris.
* Secure the vehicle: Use jack stands to securely support the vehicle, never rely solely on a jack.
* Work in a well-ventilated area: Engine fluids are hazardous.
2. Preparation:
* Consult a repair manual: This is crucial. It will provide detailed instructions specific to your vehicle, including torque specifications and component locations.
* Gather necessary tools: You'll need a variety of tools, including sockets, wrenches, screwdrivers, possibly a transmission jack, and possibly a torque wrench.
* Drain fluids: Drain the transmission fluid and engine oil. This will reduce the mess and weight.
* Disconnect components: Disconnect the driveshaft(s), linkage, wiring harnesses, and any other components connected to the transmission. Take photos to aid reassembly.
3. Accessing the Transmission:
* Remove any obstructions: This may include exhaust components, engine accessories, or other parts that hinder access to the transmission.
* Support the transmission: Use a transmission jack to support the transmission's weight. This is critical to prevent damage to the transmission or the engine.
4. Separating the Transmission from the Engine:
* Remove the transmission bellhousing bolts: This is often the most challenging step. The bolts may be very tight due to the engine being locked up. You may need to use penetrating oil and a breaker bar. A locked engine may add considerable resistance here.
* Carefully separate the transmission: Once the bolts are removed, carefully lower the transmission using the transmission jack. There will likely be significant resistance due to the locked engine. Use caution to avoid damaging the engine or transmission further.
5. Post-Removal:
* Inspect the transmission and engine: Look for any damage to the transmission, clutch, flywheel, or other components. This will help determine the cause of the engine lock-up.
* Clean the area: Clean up any spilled fluids.
Dealing with the Locked Engine:
The locked engine is a major complication. You'll need to determine *why* the engine is locked up before attempting any repair. Possible causes include:
* Seized bearings: This is a common cause of engine lock-up.
* Broken connecting rod: A catastrophic engine failure.
* Other internal damage: Various internal engine components could be the culprit.
You may need to remove the engine to diagnose and repair the cause of the lock-up. This is a significantly more involved process than simply removing the transmission.
Again, emphasize that this is a complex process requiring significant mechanical expertise. Attempting this without proper knowledge and tools can lead to further damage and potentially injury. Take your vehicle to a qualified mechanic if you are not comfortable performing this repair yourself.
