12. COOLING SYSTEM K-XCT 125i In Water Pump Assembly Install the dowel pins and a new gasket and then install the water pump assembly to the right crankcase cover. Tighten five bolts to secure the water pump assembly. When installing the water pump assembly, aligning the groove on the water pump shaft with the tab on the oil pump shaft. Seal Washer (Porcelain) Mechanical Seal WATER PUMP/IMPELLER INSTALLATION When the mechanical seal is replaced, a new seal washer must be installed to the impeller. Impeller 12-14