This is a revised CTM that replaces CTM-7 dated (2-88), This component technical manual should be used tor the repair ot John Deere Radial Piston Pumps. This revised CTM adds repair procedures tor "B" drive coupler option tor 3000 Series pumps, as well as other minor revisions. ABOUT THIS MANUAL DISCARD - CTM· 7 DATED (2·88' AllTractorManuals.com