Water Pump - Rebuild (8-02) Section 8 - Cooling System - Group 08 M11 Page 8-10 Install the puller halves, Part No. 3376549, on the threaded sleeve assembly. Install the compression sleeve, Part No. 3376545, over the two puller halves. Hold the puller sleeve with an adjustable wrench. Turn the pressure screw clockwise to remove the impeller. Caution: The retainer ring will be bent or broken if it is removed before the bearing is removed from the shaft. Use a pair of long nose angle snap ring pliers to remove the front bearing retainer ring from the ring groove in the water pump body. Leave the retainer ring loose on the shaft until the bearing is removed.