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Mat, funny the things you find when you actually look! Found 2 causes for my fan belt slipping and not driving. First are the pulley sizes. Main drove pulley on E shaft is 100mm. Then my so called reduction pulley on the water pump is also 100mm, should be 115mm to get the magical 15% reduction. Having said that the original steel pulley is around 90 mm for the water pump. Then the pulley on the alternator is a solid little 55 mm dia, whereas it is supposed to be 80mm. Price in OZ for the two reduction pulleys (Water and alt) is $110 AUD . Then the second revelation is that even with the belt at normal tension I can turn it quite easily, due to the fact it is a 5 rib multi rib belt. Problem is the lovely machining on the pulleys, that have not had the apex of the grooves machined off ( they remain very pointed) to allow the belt to settle down into the grooves and drive on the "V " sections in the belt. It is attempting to drive on the apex of the grooves only. I should be shot for not seeing that. Neil.
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