OEM 2001 Toyota Sienna Water Pump

2001 Toyota Sienna Parts Questions & Experts Answers

• Q: How to service and repair the water pump on 2001 Toyota Sienna?

  A: The water pump service requires engine coolant draining as the first step. The proper service on the water pump starts with the removal of the outer front cowl top panel assembly followed by timing belt then camshaft timing pulleys and No.2 idler pulley and finishing with the removal of No.3 timing belt cover. You must remove the water pump by unbolt the four bolts while also pulling out the two nuts and the pump and gasket. The water pump should be examined by looking at its drain hole for coolant leaks. If leakage is present the water pump must be replaced. Additionally you must check that the water pump bearing moves without friction and noise during pulley rotation before deciding to replace the water pump. Check all components related to the timing belt structure. Use the 4 bolts and 2 nuts to install the water pump into position with a new gasket but apply no oil to the gasket surface and reach the specified torque of 8.0 Nm (82 kgf-cm, 71 inch lbs.). You should begin with No.3 timing belt cover and the installation of No.2 idler pulley and camshaft timing pulleys before securing the timing belt then completing the outer front cowl top panel assembly. The system requires engine coolant while the engine runs to check for any leaks before rechecking the levels.