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The sealer is applied to the front cover. Like all the other places in this engine, sealer placement and quantity is very critical for the engine's operation. Many a VQ has been messed up by improper use of sealer.
Howard carefully puts the front cover in place. This is a little tricky to do in the car without disturbing the fresh sealer. If you think you may have messed up, pull it out and start over.
Next the tons of little bolts are put in place and tightened.
The front of the engine is all buttoned up. The valve covers can now be bolted down at the same time.
The oil pan is reinstalled. Again be careful with sealer.
All the front end accessories and their drives are reinstalled. While everything is apart, this is a good time to inspect and replace stuff on a high mileage car.