Cummins Engine Rotating Tool This special 3/8 drive barring tool is used when making valve adjustments or pump settings and is made with a two-piece sleeve. . The two-piece sleeve allows proper contact with the flywheel when the flywheel is at different depths from the hole where the tool is inserted. . For use on 1987 and newer Cummins B & C series engines and J.I. Case 3.9L, 5.9L and 8.3L diesel engines. . Most of the popular Dodge diesel pickup trucks require the use of this tool. 95650A