Replacing the timing belt on a 2006 Chrysler 300 Touring with the 3.5L V6 is not all that difficult. There are a few things to consider before replacing the timing belt on you Chrysler 300.
Chrysler scheduled maintenance indicates that the timing bet should be replaced every 100,000 miles. It's a good idea to follow this recommendation, since the 3.5L V6 is an "interference" engine. This means that the pistons and valves have enough travel to interfere with one another if the timing isn't correct. If your Chrysler 300 timing belt breaks while the engine is under power, then the camshafts will stop spinning at the same speed as the crankshaft, which will result in a terrible mess when pistons start slamming into valves, potentially destroying your engine completely. The moral of this story - replace your Chrysler 300 timing belt before it breaks!
Another consideration is the fact that the water pump is also driven by the timing belt on your Chrysler 300. So while you're in there replacing the timing belt, you should go ahead and replace the water pump as well.
Here are the parts that you will need to purchase before you get started:
Gates TCKWP295B Engine Timing Belt Kit with Water Pump
The tools required for this job:
3/8 drive ratchet
Here are the steps required to replace the timing belt on your 2006 Chrysler 300 Touring with the 3.5L V6 engine.
1) Disconnect the negative battery cable (This should be the first step anytime you're working on your vehicle)
2) Disconnect the upper radiator hose by using pliers to open the spring clamp and slide the clamp down the hose. You may need to use a screwdriver to carefully separate the hose from the metal connection. Once the hose is loose, just bend it back out of the way.
3) Remove the serpentine belt
a. Insert the 3/8 inch ratchet into the hole on the belt tensioner
b. Use a short pry bar to lengthen the handle of your ratchet. This improved leverage will make it easier to move the tensioner
c. Push the ratchet handle toward the driver's side of the vehicle and remove the serpentine belt from one of the pulleys
d. Allow the tensioner to slowly return to its rest position
4) Remove the serpentine belt tensioner from the front of the engine
5) Remove the 10mm bolts from the timing belt cover
6) Remove the 13mm bolts from the timing belt cover
7) Remove the 15mm nuts from the timing belt cover
At this point, you should have the timing cover off, and should be able to see the timing belt and the water pump as well as the crankshaft pulley and the two camshaft pulleys.
You can use a size 15mm socket to rotate the engine by hand. Watch the camshaft pulleys, and you will see the timing mark on the pulley as it lines up with the timing mark on the engine. It's very important that these marks are aligned when you go to put the new timing belt on. These marks indicate the position of the camshafts when the engine is at Top Dead Center (TDC). There is a TDC mark on the crankshaft pulley, as well.
MORE TO FOLLOW
I will be finishing this soon and adding some pictures. I hope that you have found this information to be helpful!