Water Pump On-Vehicle Inspection


  1. INSPECT FOR COOLANT LEAK

  2. REMOVE FAN SHROUD

  3. INSPECT ENGINE WATER PUMP ASSEMBLY

  4. INSPECT FLUID COUPLING ASSEMBLY

  5. INSTALL FAN SHROUD

Water Pump -- On-Vehicle Inspection



1. INSPECT FOR COOLANT LEAK
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 drain plug 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. In this case, check the area around the engine water pump assembly.
  2. Before performing this inspection, check that there is no coolant leaking from any parts other than the water pump. If there are leaks, inspect those areas.
  3. Perform this inspection when the engine is cold.

  1. Visually check the engine water pump assembly.

    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.


2. REMOVE FAN SHROUD
(LandCruiser RM000000V2801KX.html)


3. INSPECT ENGINE WATER PUMP ASSEMBLY


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.2Tr-Fe Cooling.Cooling System.Water Pump On-Vehicle Inspection

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

    Text in Illustration
    *a
    		Water Hole
    *b
    		Air Hole
    If any leakage is found, replace the engine water pump assembly.

  1. Turn the pulley and check that the engine water pump assembly bearing moves smoothly and does not make a noise.
    If necessary, replace the engine water pump assembly.



4. 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 assembly.

  1. Install the fan with the 4 nuts.

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


5. INSTALL FAN SHROUD
(LandCruiser RM000000V2501MX_02_0087.html)