Here is were I start to actually do some work. Do your normal disassembly stuff prior to getting into the engine. This includes REMOVING THE POSITIVE BATTERY CABLES FROM BOTH BATTERIES AND DRAINING THE COOLANT, You will need a bucket or a pan for a huge amount of coolant that will be mixed up with some Diesel. Plan accordingly. I didn't remove the entire Air Box assembly, it's likely a good idea to do so as it does give a bit more room. Also I started with the EASY side. The driver side has much less to remove to get to the meat of the nut. The Passenger side is a very different story. Both are plagued with valve cover bolts that are difficult to reach. Also if you have a camera it's a good time to take any pictures of things that 'You are sure you will remember how they go back together' but actually will totally forget after the second sixer of beer.