I put on the oil seal today in my timing cover. Sniper and others were right when they said the 1 ton Arbor Press would not do the trick. I pressed the seal in with the seal installer tool that I rented from O'Reillys. The ABS black pipe coupler was all that was needed for a back support. I didn't need to hit the seal with a sledge hammer, just the installer disc and a series light firm taps with a mallet. Now I'm ready to reassemble the front end of the engine and put the oil pan back on. Besides using a cherry picker, what is the best way to support the front of the engine after I take the front motor mount off? I just jacked the engine up from the bottom side of the block, and put jack stands under the bottom edges of the front of the block.