11. COOLING SYSTEM Bolts Water Pump Cover Remove the three bolts and the water pump cover, gasket and 1 dowel pins. Impeller Remove the three bolts attaching the right crankcase cover and the cover. Remove the water pump impeller. Mechanical Seal Inspect the mechanical (water) seal and inner bearing for wear or damage. The mechanical seal and inner bearing must be replace as a set. Impeller Disk water pump 11-9