I can't remember where I got this from, so I apologize for no credit given here.
This is a 130 page, 4MB, PDF copy of the...
VW 1977 - 1983 Diesel Service Manual and Repair Guide.
You can download it at RapidShare:
This is an invaluable tool, and must reading for anyone getting into these old VW diesel engine. There is excellent detailed instruction and diagrams. This is as good or even better that the Bentley.
This is a great book. I actually have the book and it has some very good step by step info for troubleshooting.
What do Divorces, Great Coffee and Cars all have in common?
They all Start with good GROUNDS.
Replace all of them that you can, 99 percent of flakiness will disappear.
92, 93 Cabriolet.... 89, and 90 are Deceased.
BTW for others the exact title from the cover is:
FOUR CYLINDER DIESEL 1977-83
This was originally used for techs to follow step by step when troubleshooting issues. Maybe you can find one at a dealer that still has some old stuff around.