Water Pump - Rebuild (8-02) Section 8 - Cooling System - Group 08 M11 Page 8-20 Install the water pump body in an arbor press with the front mounting surface facing up. Caution: To avoid deformation of the seal lip and water pump leakage, water pump oil seal expander, Part No. 3376387, must be used when installing the shaft assem- bly. Press the shaft assembly and oil seal expander into the water pump body. Remove the oil seal expander. NOTE: The shaft assembly must be pressed into the body far enough to install the rear bearing retainer ring into the groove of the body.
Use a pair of long nose angle snap ring pliers to install the front bearing retainer ring into the groove of the water pump body. Install the water pump assembly in an arbor press. Sup- port the pump assembly on the drive side of the body with the impeller end of the water pump shaft facing up. Apply a coat of pipe sealant, Part No. 3375066, to the outside diameter of the new water seal. Install the water seal over the shaft.