* Transmission Jack: This is arguably the *most* important special tool. You'll need to support the transmission while you separate it from the engine to access the rear main seal. Improper support can lead to serious injury and damage.
* Engine Support Bar: While not strictly necessary, an engine support bar will help prevent the engine from tilting or shifting during the process, especially when working with the transmission jack.
* Flywheel Alignment Tool: This is *critical* for properly installing the flywheel (or flexplate, depending on your transmission type) once the rear main seal is replaced. Improper alignment can cause significant damage to the clutch, flywheel, and crankshaft. This tool ensures the flywheel is properly seated and aligned with the crankshaft before bolting it down.
* Rear Main Seal Installer: While not absolutely mandatory, a rear main seal installer tool makes installing the new seal much easier and reduces the risk of damaging the seal lip. This is a worthwhile investment if you plan to do any more engine work in the future.
* Torque Wrench: Essential for tightening bolts to the manufacturer's specifications, preventing damage to the engine components. This is critical for the flywheel/flexplate bolts.
Important Considerations:
* Transmission Removal: In most cases, the transmission will need to be partially or fully removed to access the rear main seal. This adds significant complexity to the job. Consider your mechanical skills before undertaking this.
* Sealant: Use the correct type and amount of sealant as specified by Ford for your engine. Too little or too much sealant can lead to leaks.
* Shop Manual: A factory shop manual is invaluable. It will provide detailed instructions, torque specifications, and diagrams.
In short: While you might *technically* be able to replace the rear main seal without these tools, doing so increases the risk of damage and injury significantly. The transmission jack and flywheel alignment tool are non-negotiable for a safe and successful repair. The others significantly improve the chances of success and reduce the risk of damaging the new seal during installation.
