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Re: 40 hydro pump rebuild question

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Author 
Wayne in Tn.

01-06-2002 15:04:33




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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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