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.

    • Before performing this inspection, check that there are no engine coolant leaks from any parts other than the engine water pump assembly. If there are leaks, inspect those areas first.

    • 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. Inspect the area around the engine water pump assembly.

      Tech Tips

      Check for deposits around the drain plug of the engine water pump assembly.


      1. B00489ZC01
        *1 Water Pump Pulley
        *2 Drain Plug
        *a Water Pump Pulley Hole

        Rotate the crankshaft pulley to align the hole in the water pump pulley with the drain plug.

      2. B0047RFC01
        *a Paper Towel
        *b Hexagon Wrench

        Wrap a paper towel around an L-shaped tool such as a hexagon wrench, press the paper towel and tool against the engine coolant (solid deposits) stuck on the drain plug of the engine water pump assembly, and then check the condition of the paper towel.

        Tech Tips


        • If the paper towel is wet, replace the engine water pump assembly.

        • If the paper towel is dry, clean the area around the engine water pump assembly.

  2. REMOVE FAN AND GENERATOR V BELT

    Click here

  3. INSPECT ENGINE WATER PUMP ASSEMBLY


    1. B0047QX

      Turn the pulley and check that the water pump bearing moves smoothly and quietly.

      If necessary, replace the engine water pump assembly.

    2. Make sure that there are no drops of coolant on the water pump housing.

      If necessary, replace the engine water pump assembly.

  4. INSTALL FAN AND GENERATOR V BELT

    Click here