10.FINAL REDUCTION/ TRANSMISSION SYSTEM MXU 300/250 Inspect the gear teeth. Blue discoloration/pitting/wear Replace. Inspect the mated dogs. Rounded edges/cracks/missing portions Replace. MAIN AXLE ASSEMBLY Reverse the "MAIN AXLE DISASSEMBLY" procedures. Reverse Wheel Gear Circlip Clutch Dog Primary Driven Gear Main Axle Washer Washer Washer Needle Bearing Washer Washer Bush Collar 10-12