Toyota Pick-ups/Land Cruiser/4Runner 1989-1996

Water Pump

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REMOVAL & INSTALLATION




CAUTION
When draining coolant, keep in mind that cats and dogs are attracted by ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain coolant into a sealable container. Coolant may be reused unless it is contaminated or several years old.

22R and 22R-E Engines

See Figure 1

  1. Drain the cooling system.
  2.  
  3. Unfasten the fan shroud securing bolts and remove the fan shroud, if so equipped.
  4.  



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Fig. Fig. 1: Exploded view of the water pump mounting-22R and 22R-E engines

  1. Loosen the alternator adjusting bolt and remove the drive belt.
  2.  
  3. Remove the air conditioning and/or power steering pump drive belt.
  4.  
  5. Detach the bypass hose from the water pump.
  6.  
  7. Unfasten the water pump retaining bolts and remove the water pump and fan assembly, using care not to damage the radiator with the fan.
  8.  

To install:
  1. Install the water pump and tighten the mounting bolts to 27 ft. lbs. (37 Nm). Always use a new gasket between the pump body and its mounting.
  2.  
  3. Install the drive belts and adjust the tension.
  4.  
  5. Refill the cooling system, start the engine and check for leaks.
  6.  

3F-E Engine

See Figure 2

  1. Drain the coolant from the engine and radiator.
  2.  
  3. Loosen the idler pulley and adjusting bolts to remove the power steering belt.
  4.  



Click image to see an enlarged view

Fig. Fig. 2: Exploded view of the water pump mounting on the 3F-E engine

  1. Disconnect the coolant reservoir hose and the radiator inlet hose.
  2.  
  3. Remove the bolts holding the fan shroud.
  4.  
  5. Remove the alternator drive belt, fan, fluid coupling, and water pump pulley.
  6.  
  7. Remove the alternator.
  8.  
  9. Remove the air conditioning belt.
  10.  
  11. Disconnect the four hoses from the water pump.
  12.  
  13. Remove bolt, two nuts and power steering idler pulley with the bracket assembly.
  14.  
  15. Remove the bolt and nut, alternator support bracket, water pump and gasket.
  16.  

To install:
  1. Install a new gasket, the water pump and alternator support bracket with the bolt and nut.
  2.  
  3. Install the power steering idler pulley with the bracket assembly.
  4.  
  5. Tighten the water pump nuts and bolt to 27 ft. lbs. (37 Nm).
  6.  
  7. Install the air conditioning belt and adjust it.
  8.  
  9. Connect the hoses to the water pump.
  10.  
  11. Install the alternator.
  12.  
  13. Install the water pump pulley along with the fan and fluid coupling. Place the drive belt(s) onto each pulley; press down to tighten the belts against the pulley and tighten the four nuts. Adjust the belt tension.
  14.  
  15. Install the fan shroud bolts.
  16.  
  17. Attach the radiator inlet hose and connect the reservoir hose.
  18.  
  19. Install and adjust the power steering belt.
  20.  
  21. Install the proper amount of coolant in the system.
  22.  
  23. Start the engine and check for leaks.
  24.  

3VZ-E and 5VZ-FE Engines

See Figures 3 and 4


WARNING
This procedure requires the removal of the timing belt. This is an extensive procedure requiring precision work, particularly at reassembly. Refer to Timing Belt-Removal and Installation in this section. Do not attempt to remove the belt without consulting the procedure; extreme engine damage may occur.



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Fig. Fig. 3: Apply sealant to the areas shown



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Fig. Fig. 4: A and B bolt locations

  1. Drain the cooling system.
  2.  
  3. Remove the timing belt.
  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. Remove any old packing from the pump and mounting area of the engine. Be careful not to drop any oil on the mating areas.
  2.  
  3. Apply 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 5 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.  


CAUTION
On vehicles with air bags, work must be started after 90 seconds from the time the ignition switch is turned to the LOCK position and the negative (-) battery cable is disconnected.

  1. Drain the cooling system.
  2.  
  3. 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.
  4.  
  5. Remove the fluid coupling with the fan and water pump pulley.
  6.  
  7. Remove the water pump.
  8.  

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

See Figures 5 and 6

  1. Disconnect the negative battery cable.
  2.  



Click image to see an enlarged view

Fig. Fig. 5: Exploded view of the water pump mounting on the 1FZ-FE engine



Click image to see an enlarged view

Fig. Fig. 6: Detach the oil cooler hose from the clamp on the fan shroud

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

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 and top off the fluids.
  10.  

 
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