Water Pump (W/ Dpf) On-Vehicle Inspection

Remove the 3 bolts and oil reservoir.

Disconnect the No. 1 and No. 2 water by-pass hoses from the radiator.

Remove the 2 bolts and radiator reservoir.

Loosen the 4 nuts holding the fluid coupling with fan.

Remove the fan and generator V belt (HILUX_TGN26 RM000001477016X_01_0001.html).

Remove the 2 bolts holding the fan shroud.

Remove the 4 nuts of the fluid coupling with fan, and then remove the fan shroud together with the fluid coupling with fan.

NOTICE:

Be careful not to damage the radiator core.

Remove the fan pulley from the water pump.

Visually check the water hole and air hole for coolant leakage.

Turn the pulley and check that the pump bearing moves smoothly and quietly.
If the bearing moves roughly or noisily, replace the water pump assembly.

Remove the 4 nuts and fan.

Check the fluid coupling for damage or silicon oil leaks. If necessary, replace the fluid coupling.

Install the fan with the 4 nuts.

Torque:

6.0 N*m{61 kgf*cm, 53 in.*lbf}

Install the fan pulley to the water pump.

Install the fan shroud together with the fluid coupling with fan between the radiator and engine component.

NOTICE:

Be careful not to damage the radiator core.

Install the fluid coupling with fan to the fan pulley with the 4 nuts.
Tighten the nuts as much as possible by hand.

Attach the claws of the fan shroud to the radiator.

Install the fan shroud with the 2 bolts.

Torque:

5.0 N*m{51 kgf*cm, 44 in.*lbf}

Install the fan and generator V belt (HILUX_TGN26 RM000001474016X_01_0001.html).

Tighten the 4 nuts of the fluid coupling with fan.

Torque:

23 N*m{235 kgf*cm, 17 ft.*lbf}

Install the radiator reservoir with the 2 bolts.

Torque:

5.0 N*m{51 kgf*cm, 44 in.*lbf}

Connect the No. 1 and No. 2 water by-pass hoses to the radiator.

Install the oil reservoir with the 3 bolts.

Torque:

4.5 N*m{46 kgf*cm, 40 in.*lbf}