Here is Tutorial!!!!!!!!!
Open the assembly
Click explode in view tab. Edit position to rearrange it.
Click on "View Manager" in View tab. Click on "All". Here Create new presentation state.
Name it as EXPLODED.
Select option "Reference Original"
Save the Model.
Create new drawing with default template.
Choose A3 size paper & click OK.
You will get 3 predefined views (Front, Top & Right).
Now click general view in Layout tab & click on blank space.
It will ask to select Combined state.
Select Exploded & click OK.
Here you will get exploded view. Double click on view & go to view display.
Change the Display style to 'No hidden' & Tangent Edges display style to 'Solid'.
Here is your drawing is ready.
Now you can add balloon, BOM (Bill of Material) & Title block to complete the drawing..