Water Pump On-Vehicle Inspection


  1. REMOVE FAN SHROUD

  2. INSPECT WATER PUMP ASSEMBLY

  3. INSPECT FLUID COUPLING ASSEMBLY

  4. INSTALL FAN SHROUD

Water Pump -- On-Vehicle Inspection



1. REMOVE FAN SHROUD


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155

  1. Loosen the 4 nuts holding the fluid coupling fan.

  1. Remove the vane pump V belt and the fan and generator V belt (LandCruiser RM00000122Y00JX.html).



    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155

  1. Remove the 2 bolts holding the fan shroud.

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

    NOTICE:
    Be careful not to damage the radiator core.

  1. Remove the fan pulley from the water pump.



2. INSPECT WATER PUMP ASSEMBLY
HINT:
  1. The sliding surface inside the engine water pump assembly is lubricated by engine coolant. As some engine coolant is discharged during normal operation, coolant residue (solids) may be found on the air hole or the bottom of the engine water pump assembly. Engine coolant may leak if foreign matter enters the engine water pump assembly, however the sealing performance will recover when the foreign matter is pushed out or breaks into fine pieces.
  2. Before performing this inspection, check that there is no coolant leaking from any parts other than the engine water pump assembly. If there are leaks, inspect those areas.
  3. Perform this inspection when the engine is cold.


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.5L-E Cooling.Cooling System.Water Pump On-Vehicle Inspection

  1. Visually check the engine water pump assembly.

    Text in Illustration
    *1
    		Air Hole

    1. Check that engine coolant is not dripping from the engine water pump assembly.

      HINT:
      1. If engine coolant is dripping, replace the engine water pump assembly.
      2. If engine coolant is not dripping, perform the following check.

  1. 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.



3. INSPECT FLUID COUPLING ASSEMBLY


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155

  1. Remove the 4 nuts and fan.



    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155

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

  1. Install the fan with the 4 nuts.

    Torque:
    6.5 N*m{66 kgf*cm, 58 in.*lbf}


4. INSTALL FAN SHROUD

  1. Install the fan pulley to the water pump.

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

    NOTICE:
    Be careful not to damage the radiator core.

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



    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155

  1. Attach the claws of the shroud as shown in the illustration.

  1. Install the shroud with the 2 bolts.

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

  1. Install the fan and generator V belt and vane pump V belt (LandCruiser RM00000122V00MX.html).

  1. Tighten the 4 nuts of the fluid coupling fan.

    Torque:
    19 N*m{189 kgf*cm, 14 ft.*lbf}