Welcome to the site!
Good luck with your maintenance chores... you'll find plenty of info concerning your car here...
http://www.myturbodiesel.com/1000q/b...DI-FAQ-DIY.htm
Please pay particular attention to the section dealing with the balance shaft, as that deals with a design flaw that must be corrected if the car is to last as long as it should.
All the best,
Yuri