12. COOLING SYSTEM Downtown 300i ABS Water Pump Shaft WATER PUMP SHAFT REMOVAL Disconnect the water hose from the right crankcase cover. Remove bolts attaching the right crankcase cover. Remove the water pump bearing snap ring from the water pump assembly. Remove the water pump shaft and inner bearing. Remove the water pump shaft outer bearing. Snap Ring MECHANICAL SEAL REPLACEMENT Drive the mechanical seal out of the water pump assembly from the inside. Apply sealant to the right crankcase cover of a new mechanical seal and then drive in the mechanical seal. Water Pump Shaft WATER PUMP SHAFT INSTALLATION Drive a new water pump shaft outer bearing into the water pump assembly from the inside. Install the water pump shaft and shaft inner bearing into the waster pump assembly. Install the snap ring to secure the inner bearing properly. Mechanical Seal 12-9