- Allow the oil to drain from the rear axle reduction gear, send the drained oil for disposal Replace the sealing rings of the plugs. Clean and screw in the plug (1) drain hole, tightening it with a torque of 65 M.m (6.5 kgf·m) if the sealing ring is rectangular or torque 60 N.m (6.0 kgf·m) if the sealing ring is a steep section.
- Fill with rear axle gear oil until it overflows. Drain excess oil and clean the crankcase. Replace the O-ring, screw in and tighten the screw plug (2) filler hole with the torque given above.