The oil pump is driven off the IP drive shaft, so if the chain was broken you didn't get any oil.

If you didn't break a cam tower, you are probably all right enginewise, but a valve clearance check will tell you -- bent valves won't come all the way up.

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!