12. COOLING SYSTEM Downtown 300i ABS Install the dowel pins and a new gasket and Impeller Seal Washer (Porcelain) then install the water pump assembly to the right crankcase cover. Tighten 12 bolts to secure the right crankcase cover. When installing the water pump assembly, aligning the groove on the water pump shaft with the tab on the oil pump shaft. WATER PUMP/IMPELLER Mechanical (Water) Seal INSTALLATION When the mechanical seal is replaced, a new seal washer must be installed to the impeller. Install the impeller onto the water pump shaft. Torque: 1.0~1.4 kgf-m (11.8 N-m) The impeller has left hand threads. Install two dowel pins and a new gasket. Install the water pump cover and tighten the 4 bolts. Torque: 1.0~1.4 kgf-m (11.8 N-m) 12-10