3 - 56 S-100 • S-105 • S-120 • S-125 Part No. 1268494March 2017Section 3 • Repair Procedures6-1RPM AdjustmentRefer to Maintenance Procedure,Check and Adjust the Engine RPM.6-2Flex PlateThe flex plate couples the engine to the pump. Theflex plate is bolted to the engine flywheel and hasa cut-out in the center for the pump coupler.a pumpb pump shaftc couplerd flex platee flywheelf Deutz models- .245 inch / 6.2 mm gapCummins or Perkins models-.255 inch / 6.5 mm gapEnginesHow to Remove the Flex Plate1 Disconnect the wiring plug at the electronicproportional controller located on the drivepump.2 Remove the hose clamp from the air cleanerhose at the air cleaner. Carefully disconnectthe hose from the air cleaner.3 Remove the air cleaner mounting fasteners.Remove the air cleaner from the machine.4 Remove the fuel filter/water separator retainingfasteners from the pump mounting plate. Donot disconnect the fuel hoses.5 Remove the fuel filter/water separator and lay itto the side.6 Support the drive pump assembly with anappropriate lifting device. Then remove all ofthe pump mounting plate to engine bell housingbolts.7 Carefully pull the pump away from the engineand secure it from moving.Component damage hazard.Hoses can be damaged if they arekinked or pinched.8 Remove the flex plate mounting fasteners,then remove the flex plate from the flywheel.a b c efd
