Section 8 - Cooling System - Group 08 Water Pump - Rebuild (8-02) M11 Page 8-9 Water Pump - Rebuild (8-02) Disassembly Install the water pump in a vise with brass jaws with the inlet cover facing up. Remove the three capscrews. Use a mallet to loosen the cover. Remove the inlet cover from the water pump body. Remove the o-ring from the cover. Discard the o-ring. Use the water pump impeller puller kit, Part No. 3376542, to remove the impeller. Install the spacer pin, Part No. 3822296, into the bore of the water pump impeller. Install the puller sleeve, Part No. 3376544, and the pres- sure screw, Part No. 3376546, over the spacer pin.