Section 5 - Fuel System - Group 05 Fuel Pump - Rebuild (5-02) M11 Page 5-7 Check the gear pump shafts. Discard them if they are damaged. Replace the shaft if the bearing surface is worn smaller than 12.695 mm [0.4998 in] in diameter. Replace the drive shaft if there is measurable wear on the sealing surface. NOTE: If the shaft feels rough when a fingernail is moved across the sealing surface, replace the shaft. Visually inspect the gears for damage and replace them if needed. Check the gear width. Discard any gear worn smaller than 31.707 mm [1.2483 in]. Press the gears on the shaft 17.27 to 17.533 [0.680 to 0.690 inch] from the body end of the shaft, if removed.
Put a coating of clean engine lubricating oil on the shaft before assembly. Visually inspect the gear body and cover for damage and replace them if needed. Check the gear hole depth. Gear Hole Depth mm in 31.704 MIN 1.2482 31.712 MAX 1.2485 Check the shaft bores in the cover and the body. Shaft Bores mm in 12.733 MIN 0.5013 12.741 MAX 0.5016 Visually inspect the regulator plunger for binding or scuff- ing and replace if needed. Check the regulator outside diameter. Replace the regulator if worn smaller than 9.492 mm [0.3737 inch]. Check the regulator bore. Regulator Bore mm in 9.510 MIN 0.3744 9.520 MAX 0.3748