the pump caD be,eparated ror ell:aminaljon tlod replacement where The roeor eodfloat and lobe clearance should be ebecked as follows: rllstaU tbe rotors io Ihe pump body, place a 'Iraightedge across tbejoiot face of the pump body. and measure the clearaace between the top face of tbe rotors and the under side of the straigbtedge.