Water Pump - Rebuild (8-02) Section 8 - Cooling System - Group 08 M11 Page 8-18 Use the water pump gear mandrel, Part No. 3823851, to press the shaft into the gear. NOTE: Press the shaft through until the tool contacts the gear surface. Caution: To prevent future water pump damage, the bev- eled side of the retainer ring must be installed toward the drive gear. Install the front bearing to water pump body retainer ring on the shaft. Use clean 15W-40 oil to lubricate the bearing and shaft bearing journal. Install the shaft assembly in an arbor press. Use the water pump bearing mandrel, Part No. 3375318, to support the shaft assembly. Caution:
Press against the inner race of the bearing to prevent personal injury or bearing damage. Use the water pump bearing mandrel, Part No. ST-658, to press the bearing on the shaft until the bearing contacts the shoulder on the shaft.