12. COOLING SYSTEM PEOPLE 250 Impeller Mechanical Seal WATER PUMP/IMPELLER INSTALLATION When the mechanical seal is replaced, a new seal washer must be installed to the impeller. Seal Washer (Porcelain) Impeller (Left Hand Threads) Install the impeller onto the water pump shaft. Torque: 9.813.7N-m The impeller has left hand threads. Install the two dowel pins and a new gasket. Dowel Pins Bolts Install the water pump cover and tighten the 4 bolts. Torque: 7.811.8N-m Water Pump Cover 12-13