Toyota 16100-09491
Water Pump

The procedure for water pump removal starts with detaching both left and right side front fender splash shield sub-assembly. The first step involves taking off the No. 1 engine under cover sub-assembly and draining the engine coolant from it. Remove the V-bank cover sub-assembly and subsequently detach the air cleaner hose assembly and the air cleaner assembly. The removal process for the No. 1 and No. 2 radiator hoses must be completed before the fan shroud is taken out. You can disconnect the No. 2 water by-pass pipe sub-assembly after taking off the No. 6 water by-pass hose while removing three bolts. When you finish you can disconnect the water by-pass pipe from the water hose. Moving on, detach the water inlet housing by first disconnecting the air pump connector along with the air pump connector clamp holder followed by the No. 2 and No. 3 air hoses and the air pump connector. Then remove the wire harness clamp using a clip remover and disconnect the No. 5 water by-pass hose, remove the air tube bracket bolt, disconnect the No. 3 water by-pass hose, and finally remove the 3 bolts and the water inlet housing together with the gasket. The removal of the water pump pulley requires Special Service Tools: 09960-10010, 09962-01000, and 09963-01000 to grasp the water pump pulley followed by disassembling its 4 bolts and the pulley itself. End the water pump assembly procedure by removing the eight bolts and water pump assembly together with its gasket.

Take off the V-bank cover sub-assembly, followed by the air cleaner hose assembly and the air cleaner assembly.

Torque to 21 Nm.

Remove the water pump assembly by taking out the 5 bolts, 2 stud bolts, and nut, along with the water pump and gasket, and also remove the O-ring from the water by-pass pipe.

Disconnect the cable from the negative battery terminal and wait at least 90 seconds to disable the SRS system.

Connect the cable to the negative battery terminal with a torque of 5.4 Nm (55 kgf-cm, 48 in-lbf).

Install a new gasket and the water pump using 17 bolts, torquing to 9.0 Nm for 10 mm head bolts and 23 Nm for 12 mm head bolts.

Start by taking off the No. 1 engine under cover and draining the engine coolant.

Remove the fan shroud.

Use the same procedure for both No. 2 idler pulleys; if equipped with an idler pulley cover plate, remove the bolt, cover plate, idler pulley, and cover plate, or if not equipped, just remove the bolt and idler pulley.

Secure the 2 idler pulleys and 2 cover plates with 2 bolts, torquing to 39 Nm.