WATER PUMP ON-VEHICLE INSPECTION

PROCEDURE


  1. INSPECT FOR COOLANT LEAK

    Tech Tips


    • 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.

    • 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.

    • 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.

        Tech Tips


        • If engine coolant is dripping, replace the engine water pump assembly.

        • If engine coolant is not dripping, perform the following check.

  2. REMOVE FAN SHROUD

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  3. INSPECT ENGINE WATER PUMP ASSEMBLY


    1. A01XIIOE04
      Text in Illustration
      *a Water Hole
      *b Air Hole

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

      If any leakage is found, replace the engine water pump assembly.

    2. 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


    1. A01XJ4I

      Remove the 4 nuts and fan.

    2. A01XLV1

      Check the fluid coupling for damage or silicon oil leaks.

      If necessary, replace the fluid coupling assembly.

    3. Install the fan with the 4 nuts.

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

  5. INSTALL FAN SHROUD

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