The way it should be-

Posted by Bob Carabbio on February 12, 1998 at 20:25:16

In Reply to: fresh busted tips
posted by Bob Carabbio on February 12, 1998 at 14:18:50

Starting with the impeller and shaft
1) the tear drop washer goes on and seats in the impeller.
2) shaft goes into the rear bushing
THEN
without the gasket, assemble the pump to the head tighten lightly and see if there's end play.
What should happen is that the end of the impeller shaft should contact a cast boss inside the head.If there's end play with no gasket then there's probably wear on the inner boss, or the shaft end.
What is best is to replace the shaft with a unit that's longer than standard (available from everybody) and re-assemble the shaft/impeller with enough shaft sticking out inside to contact the boss.That way you don't have to fool around with thrust washers on the fan end.If the inner boss is worn in an irregular shape you should flatten it out to give a good surface for the shaft to seat onto.I used a small cylindrical stone in an electric drill to true mine up.
With the gasket installed the end play should be 0.010"
Bob Carabbio

Follow Ups:
Re: The way it should be- But? DJ.Voyce February 13, 1998 at 02:05:43(1)
Re: The way it should be- But? Bob Carabbio February 13, 1998 at 14:43:25(0)

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