I've neary broken a couple GM waterpumps from that silly little bolt that does nothing but hold the HUGE waterpump casting in place while you fit dozens of 1/4" bolts in...

In all seriousness, you need to replace that cover. It's cracked through the oil seal area, is is very likely to drip oil all the time if welded, to say nothing of the likelyhood of it being flat again after welding it up being nil.

I would have just pulled the chain through -- the only way it could be off is if you drop it and get it a tooth off on a sproket, it only fits that way, no "adjustment" possible.

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!