11.FINAL REDUCTION/ TRANSMISSION SYSTEM MXU 550EXi/MXU500i Reverse Gear DRIVE SHAFT DISASSEMBLY/ASSEMBLY/ INSPECTION DISASSEMBLY Remove the drive shaft assembly (refer to the "TRANSMISSION REMOVAL/INSPECTION/ INSTALLATION" section in this chapter). Remove the washer (thick) and reverse gear. Remove the washer (thin). Washer (Thick) Washer (Thin) ASSEMBLY/INSPECTION Inspect the gear teeth. Blue discoloration/pitting/wear Replace. Inspect the needle bearing in the reverse gear. Wear/damage Replace. 11-26