Reply To: Water pump housing O-ring for 1958 Mark 10

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February 24, 2022 at 2:28 pm #255211
DAVID
Participant

    US Member

    mark 25 etc had the same impeller but the keyway was round. that is the one to file. make sure the impeller is loose on the shaft, or it will not center and burn. make sure the water is above the lower Dyna Float to cover the pump..