Toyota Pick-ups, Land Cruiser, and 4 Runner 1997-00

Water Pump

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REMOVAL & INSTALLATION



5VZ-FE Engines


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Fig. The water pump is located on the front of the engine block, behind the timing cover



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Fig. Once the retainers are removed, pull the pump away from the block



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Fig. Scrape any remaining gasket material from the block before installing the new pump



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Fig. Water pump mounting bolt locations



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Fig. Front view of the water pump and thermostat housing


WARNING
This procedure requires the removal of the timing belt. This is an extensive procedure requiring precision work, particularly at assembly. For more information, refer to "Timing Belt Removal and Installation." Do NOT attempt to remove the belt without consulting the procedure; extreme engine damage may occur.



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Fig. Apply sealant to the areas shown



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Fig. A and B bolt locations



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Fig. Exploded view of the water pump arrangement5VZ-FE engine

  1. Drain the cooling system.
  2.  
  3. Remove the timing belt. For additional information, please refer to the following topic(s): "Timing Belt Removal and Installation."
  4.  
  5. Remove the idler pulley.
  6.  
  7. Remove the thermostat.
  8.  
  9. Disconnect the oil cooler hose from the pump.
  10.  
  11. Remove the seven bolts and the tension spring bracket and then remove the water pump.
  12.  

To install:

  1. Clean all parts well. It is good practice to carefully clean all threaded openings, especially those exposed to coolant to remove rust and scale so at assembly, an accurate torque reading is obtained. This is important, since no-gasket applications like this depend on even clamp loads from the fasteners to avoid distortion and leaks. Remove any old sealer (Toyota calls it "packing") from the pump and mounting area of the engine. Keep oil off the mating areas.
  2.  
  3. Apply Formed-In-Place-Gasket (FIPG) sealer to the pump-to-block mating surface and then tighten the bolts marked A in the illustration to 13 ft. lbs. (18 Nm). Tighten those marked B to 14 ft. lbs. (20 Nm).
  4.  

The parts must be installed within five minutes of application of the sealant. Otherwise you must remove and reapply the sealer.

  1. Connect the oil cooler hose.
  2.  
  3. Install the thermostat with a new gasket.
  4.  
  5. Install the idler pulley.
  6.  
  7. Install the timing belt.
  8.  
  9. Install the drive belts and adjust the tension.
  10.  
  11. Refill the cooling system and check for leaks.
  12.  

2RZ-FE and 3RZ-FE Engines
  1. Disconnect the negative battery cable.
  2.  
  3. Drain the cooling system.
  4.  
  5. If equipped with an air conditioning compressor or power steering pump drive belts, it may be necessary to loosen the adjusting bolt, remove the drive belt(s) and move the component(s) out of the way.
  6.  
  7. Remove the fluid coupling with the fan and water pump pulley.
  8.  
  9. Remove the water pump.
  10.  

To install:

  1. Clean the gasket mounting surfaces.
  2.  
  3. Install the replacement water pump using a new gasket.
  4.  
  5. Install the water pump pulley and fluid coupling with the fan.
  6.  
  7. Install the removed engine drive belts.
  8.  
  9. Fill the cooling system.
  10.  
  11. Connect the negative battery cable. Start the engine and check for leaks.
  12.  
  13. Bleed the cooling system.
  14.  

1FZ-FE Engine


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Fig. Exploded view of the water pump mounting on the 1FZ-FE engine



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Fig. Detach the oil cooler hose from the clamp on the fan shroud

  1. Disconnect the negative battery cable.
  2.  
  3. Drain the engine coolant.
  4.  
  5. Disconnect the water bypass and radiator inlet hoses.
  6.  
  7. Remove the drive belts, fan assembly, and the fan shroud.
  8.  
  9. Disconnect the oil cooler hose from the clamp on the fan shroud. Remove the bolts holding the fan shroud to the radiator.
  10.  
  11. Remove the four bolts, two nuts, water pump, and the gasket.
  12.  

To install:

  1. Install the water pump using a new gasket. Tighten the fasteners to 15 ft. lbs. (21 Nm).
  2.  
  3. Install the water pump pulley, fan shroud, and the drive belts as follows:
    1. Place the fan with the fluid coupling, water pump pulley, and the fan shroud in position.
    2.  
    3. Temporarily install the fan pulley mounting nuts.
    4.  
    5. Install the fan shroud and tighten the bolts to 43 inch lbs. (5 Nm).
    6.  
    7. Connect the oil cooler hose to the clamp on the fan shroud.
    8.  

  4.  
  5. Connect the water bypass and radiator hoses. Fill the cooling system.
  6.  
  7. Connect the negative battery cable.
  8.  
  9. Start the engine, check for leaks. Add fluids as required.
  10.  

2UZ-FE Engine

WARNING
This procedure requires the removal of the timing belt. This is an extensive procedure requiring precision work, particularly at assembly. For additional information, please refer to the following topic(s): "Timing Belt Removal and Installation." Do NOT attempt to remove the belt without consulting the procedure; extreme engine damage may occur.



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Fig. Water pump and related components2UZ-FE engine

  1. Disconnect the negative battery cable.
  2.  
  3. Drain the engine coolant.
  4.  
  5. Remove the camshaft timing belt. For additional information, please refer to the following topic(s): "Timing Belt Removal and Installation."
  6.  
  7. Remove the No. 2 idler pulley.
  8.  
  9. Remove the water inlet and thermostat.
  10.  
  11. Remove the five bolts, two stud bolts and nut and separate the water pump from the engine block. Discard the gasket.
  12.  

To install:

  1. Installation is the reverse of the removal procedure. Clean all parts well. It is good practice to carefully clean all threaded openings, especially those exposed to coolant to remove rust and scale so at assembly, an accurate torque reading is obtained. Remove any old gasket material from the pump and mounting area of the engine using a razor blade and/or gasket scraper. Use care not to gouge aluminum parts.
  2.  
  3. Inspect the pump. Check the air hole (vent) and water holes for coolant leakage. If coolant has been leaking on the timing belt, replace the timing belt. Turn the pump pulley and check that the water pump bearing moves smoothly and quietly. If not, replace the water pump. Check the fan coupling (sometime called the fan clutch). It contains silicone oil. If it is leaking, it must be replaced.
  4.  
  5. Install a new O-ring to the water bypass pipe end. Lubricate with soapy water and connect the water pump to the water bypass pipe end. Using a new gasket, install the water pump. Uniformly tighten the bolts, stud bolts and nut, in several passes. Final torque should be:
    1. Bolts180 inch lbs. (21 Nm)
    2.  
    3. Standard bolts and nut156 inch lbs. (18 Nm)
    4.  

  6.  
  7. Install the water inlet and inlet housing assembly. Use FIPG material. Make sure all old sealer is cleaned off. Apply a 1 / 8 -bead of sealer and install immediately. Tighten the bolts to 156 inch lbs. (18 Nm). Connect the water bypass hose.
  8.  
  9. Install the No. 2 idler pulley.
  10.  
  11. Install the timing belt.
  12.  
  13. Fill the engine with coolant, start the engine and check for leaks. When cool, recheck engine coolant level.
  14.  

 
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