Timing belt set-up Volvo AQ151?

[Clive Lewis]

Hi everyone!<br /> Hope someone can help me to help my father-in-law.<br />He has a Nimbus 21DC from late 80's which has a Volvo engine, he says it's a AQ151. The problem started at the end of last season when he had taken the boat up for the winter. He was flushing out the water-system with fresh water when the motor stopped. Upon starting the engine again there was a loud bang and the motor stopped. When he looked he saw that the casing which has the degrees marked on it for timing had a hole in it and the connecting bush between the water pump and drive axel had disintegrated.<br /> All the damage parts were replaced but now the boat refuses to start. I know a little about engines and am always ready to score points with the father-in-law ;-) Somebody had told him that the timing belt could have jumped when the waterpump bush gave up so I first checked the obvious, fuel in tank, spark at plugs, compression osv. When I started to investigate the timing belt it seems it has jumped but because all the technical manuals är in Swedish it's a bit difficult to translate them (I'm in Sweden by the way). The reason that I supect the belt has jumped is because when the bottom pulley (crankshaft) it at 0 degrees and the big hole in camshaft pulley lines up with the mark on the camshaft cover, the small mark on the pulley on the axel which drives the distributor is at about 5 o'clock (not in line with the indicator on the backplate). It seems to be about 30 degrees away from were it should be. To confirm this the points are closed when the engine is around 0 degrees (the points are exactly half way between two lobes in the distributor). My question is: Should the points be open when the engine is around 0 degrees and should the marks on all the pulley's line up at the same time.<br /> I hope somebody can help me as my future depends on it (only kidding!!).<br />Clive.