Question 1

How to install the water pump assembly and related components on Toyota Avalon?

Accepted Answer

Start by applying a brand new water pump gasket on the assembly before tightening it with sixteen bolts; Bolt A requires 21 Nm (214 kgf-cm, 15 ft-lbf) torque yet the B and C bolts need a force of 11 Nm (112 kgf-cm, 8 in-lbf). For safety, maintain the A bolt threads free of oil and renew the two C bolts or preserve previously used ones with adhesive 1344 which can be Toyota Genuine Adhesive 1344, Three Bond 1344, or an equivalent product. The vane pump assembly should follow installation of the No. 2 idler pulley sub-assembly by securely tightening left-hand threaded bolts to a torque value of 43 Nm (438 kgf-cm, 32 ft-lbf). Both sides of the vehicle must receive bolts for the idler pulley cover plate and No. 2 idler pulley cover plate, with torques set to 54 Nm (550 kgf-cm, 40 ft-lbf), while recording the plate diameters that measure 33.6 mm (1.32 in.) for idler pulley cover plate and 37.8 mm (1.49 in.) for No. 2 idler pulley cover plate. After fitting 4 bolts onto the water pump pulley you must apply Special Service Tool: 09960-10010, 09962-01000, 09963-00700 when tightening bolts to 21 Nm (214 kgf-cm, 15 ft-lbf). When installing the crankshaft pulley use Special Service Tools that include 09213-70020, 09213-70011, 09950-50013, 09330-00021, 09951-05010, 09952-05010, 09953-05020 and 09954-05021. Reinstall the water inlet housing No.1 gasket and apply a new water outlet pipe O-ring before securing it with 2 bolts and a nut that requires 10 Nm (102 kgf-cm, 7 ft-lbf) torque. Make sure the O-ring remains uncompressed. Fasten the radiator hose outlet followed by the fan and generator V belt before installing the engine mounting bracket front No.1 LH alongside the engine mounting control bracket and engine moving control rod and V-bank cover sub-assembly. As a final step complete the tasks of adding engine coolant and verifying leak points before installing the engine under cover right side and right side front wheel.

Question 2

How to service and repair the water pump on Toyota Avalon?

Accepted Answer

The repair and servicing of a water pump should start with coolant draining from the engine. Before extracting the water pump remove the timing belt, camshaft timing pulleys and No.2 idler pulley and No.3 timing belt cover by taking out the four bolts and two nuts along with the gasket. The water pump should undergo inspection of the drain hole for coolant leakage; when leakage is detected the water pump replacement becomes necessary. Check the water pump bearing movement by rotating the pulley because a faulty bearing requires a water pump replacement. Secure the water pump with a new gasket through installation of 4 bolts and 2 nuts to a torque strength of 8 Nm (80 kgf.cm, 69 inch lbs.) while keeping the gasket free of oil residue. The installation process must follow with the No.3 timing belt cover accompanied by the No.2 idler pulley and the camshaft timing pulleys and timing belt. Check engine function by adding coolant before starting the system then verify leakages and gauge engine coolant levels.

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