Section 1 - Cylinder Block - Group 01 Crankshaft Gear - Replacement (1-11) M11 Page 1-39 Crankshaft Gear - Replacement (1-11) Removal Use gear puller, Part No. 3375840, with jaws, Part No. 3375839, to remove the crankshaft gear. Use a flat chisel and a hammer to remove the key. Inspection Visually inspect the crankshaft gear for cracks and broken or chipped teeth. The gear must be replaced if it is damaged. Visually inspect the gear and keyway for nicks or burrs. Use crocus cloth to remove nicks and burrs.