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Water pump empeller replacing 1960 40hp

Replacing the water pump impeller, can't get the lower end to drop. unbolted lower end and shift shaft but drive shaft will not drop.

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  • cjdd1 Jul 25, 2009

    Good Job! That's what the dealer told me. But, I read that on the shift shaft all you had to do was loosen the bolts,when in fact you have to remove all the way. Fixed! Takeing out tomorrow for 1st. run on 1960 13 ft. flat bottom. Thanks, I'll be back!

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On an old motor,the problem will be that the shaft that runs from the crankshaft to the g/box may have frozen .The shaft has a splined fitting that goes into the bottom of the crankshaft.These have a habit of fusing together.It can sometimes be a problem to get them apart.1st try is to unbolt the power head and put some gentle heat onto it.The fused part (bottom of the crank).2nd is to turn the crank and with a soft striker(eg copper or zinc shaft)striking it all the way around the fused point,maybe 10 or 20 times.Then try the heat again.Its a long process but cheaper than having to buy new stuff. Hope this helps

Posted on Jul 23, 2009

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