15. REAR WHEEL/AXLE/SUSPENSION/ DRIVING MECHANISM MXU 300/250 Lock Nut Install a new lock nut and tighten it to the specified torque using the special tools. Special tool: Lock nut wrench F015 Torque: 100 N-m (10 kgf-m, 72 lbf-ft) Lock Nut Wrench Oil Seal Apply grease to a new oil seal lips and install it into the gear case until it is fully seated. FINAL GEAR CASE (MXU 300) ASSEMBLY When the gear set, bearing, and/or gear case has been replaced, check the tooth contact pattern (page 15-30) and gear backlash (page 15-26). Clean the mating surface of the gear case and cover, being careful not to damage them. Keep dust and dirt out of the case and cover. Blow compressed air through the breather hole in the gear case. 15-36