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40 hydro pump rebuild question

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Jim

01-06-2002 13:09:22




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We are rebuilding the hydro pump that was removed from the front of the engine. Hydro oil was over filling the crank case. We found two of the bearings were shot. And proceeded to replace all of them. My question is-- The gasket kit came with
a washer and three other gaskets. Where does this
washer go? When I took this apart it didn`t have any washer. Also I had to buy a o ring gasket I assume this goes around the shaft in the casting of the pump. Does someone know the parts line up ?
O ring, Bearing ,washer ect. Any help is appreciated.

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Wayne in Tn.

01-06-2002 15:04:33




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 Re: 40 hydro pump rebuild question in reply to Jim, 01-06-2002 13:09:22  
Jim, There should be a leather washer, installed with smooth side next to casting into the drive shaft side of the pump body, then install new o-ring in the housing between the leather washer and needle bearing. Install the needle bearings with the numbers UP, and drive down .060 below surface, this gives room for the snap rings. Also if the outer halves of the sandwitch are scored, you can have them machined back smooth, this will increase pressure. After bolting back together, make sure pump turns freely, if not it will shear the woodruff key, or do more serious damage.

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