Now we are going to remove the hammer. This is one time where you need to pay attention. Put your allen key into the hammer lug. Note where the handle is. Rotate it three exact and full turns. This should then allow it to slide out the back of the body. If not then rotate it another full turn. Remember how many turns you rotated it though. This is very important to get the timing right when you put it back in.
In order for the hammer to slide out the back, the dark grey circle which is the bottom of the hammer lug should be up inside the lighter grey area which is the hammer.
Once it is all out put the assembly together somewhere it won't get dirty.
Now you are going to remove the valve. Undo this brass screw from under the body.
It will look like this. Clean off the thread sealant so you can apply new when you re-install it.
Now the valve will be able to slide out the back of the body. It may need a little encouragement. Be careful not to push on the sealing face of the valve with anything.
Once it is out, clean it off and double check the o-rings are good. Keep the assembly together somewhere they won't get dirty.
Now that is the gun fully diss-assembled and it is time to put it all back together in the new body!