Ford Other 1957

Help Help I have a problem with the Distributer in the Ford 103e engine and i have to remove it. Loosing the clamp can rotate the housing and tried to lift out the unit. it will not come up Sprayed WD40 down the shaft drive . 24 hours later tried again no go . Looke like the shaft is seized on the sloted Drive it shares with the oil Pump. Fitted a small sling around the housing tried to lift it up with a small forklift . Also tapped the housing with the hammer to shock it . No Luck. I was hoping not to remove the engine strip out to remove the oil pump . I was woundering it anyone had this problem before. I would appricate any help. Thanks Noel Keohane Cork 0862557752