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How do I remove a water pump from my 1997 Mercury Sable?


REMOVAL &


REMOVAL & INSTALLATION





CAUTION
Never open, service or drain the radiator or cooling system when hot; serious burns can occur from the steam and hot coolant. Also, when draining engine coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze and could drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantities. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old.


3.0L OHV Engine

See Figures 1 through 11

  1. Disconnect the negative battery cable. Allow the engine to cool.
  2.  
  3. Remove the radiator cap and drain the cooling system.
  4.  
  5. Loosen four retaining bolts securing the water pump pulley to the water pump hub.
  6.  
  7. Remove the accessory drive belts.

  8.  
  9. Remove the automatic belt tensioner.
  10.  
  11. Disconnect and remove the heater hose from the water pump.
  12.  
  13. Remove the engine control sensor wiring from the locating stud bolt, if equipped.

  14.  
  15. Remove the water pump-to-engine retaining bolts and lift the water pump and pulley up and out of the vehicle.
  16.  


To install:



Click image to see an enlarged view

Fig. Fig. 1: It is recommended to loosen the water pump pulley bolts while the belt is still connected




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Fig. Fig. 2: After the belt is removed, remove the pulley bolts and...




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Fig. Fig. 3: Remove the pulley from the water pump




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Fig. Fig. 4: Remove the heater hose from the top of the water pump




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Fig. Fig. 5: Remove the A/C compressor support bracket




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Fig. Fig. 6: Remove the alternator support bracket also




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Fig. Fig. 7: Remove the power steering line support bracket nut and remove the bracket from the water pump




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Fig. Fig. 8: Remove the water pump retaining bolts and...




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Fig. Fig. 9: ... remove the water pump from the engine




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Fig. Fig. 10: Thoroughly clean the water pump mounting surfaces




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Fig. Fig. 11: Location, size and torque specification for the water pump bolts-3.0L OHV engine



CAUTION
Use care when using a scraper to clean any aluminum parts. Aluminum gouges easily which may cause the component to leak.



  1. Clean the gasket surfaces on the water pump and engine front cover. Install a new gasket on the water pump using gasket adhesive.
  2.  
  3. Place the water pump in position on the engine with the pulley and four retaining bolts loosely installed on the hub.

  4.  
  5. Apply pipe sealant to bolt No. 3. Refer to the accompanying illustration for bolt location.
  6.  
  7. Install the bolts in the water pump housing.
  8.  
  9. Tighten bolts Nos. 4, 5, 6, 7, 8, 9 and 10to 15-22 ft. lbs. (20-30 Nm). Tighten bolts Nos. 11, 12, 13, 14 and 15 to 71-106 inch lbs. (8-12 Nm).
  10.  


The bolts are of different lengths and must be installed in the correct locations.

  1. If equipped, attach the engine control sensor wiring to the locating stud bolt.
  2.  
  3. Hand-tighten the water pump pulley retaining bolts.
  4.  
  5. Install the accessory drive belts.
  6.  
  7. Tighten the water pump pulley bolts to 15-22 ft. lbs. (20-30 Nm).
  8.  
  9. Connect the heater hose to the water pump.
  10.  
  11. Fill the cooling system. Connect the negative battery cable.

  12.  
  13. Start the engine and allow it to reach normal operating temperature. Check for leaks and proper operation.
  14.  


3.0L DOHC Engine

See Figure 12

  1. Disconnect the negative battery cable. Drain the engine cooling system.
  2.  
  3. Remove the water pump drive belt.
  4.  
  5. Disconnect the radiator and heater hoses from the water pump.
  6.  
  7. If equipped, remove the A/C compressor-to-water pump brace.
  8.  
  9. Unfasten the four nuts securing the water pump to the engine and remove the water pump.

  10.  


To install:



Click image to see an enlarged view

Fig. Fig. 12: Water pump mounting-3.0L DOHC engine

  1. Clean the water pump to engine gasket sealing surfaces.
  2.  
  3. Install the water pump using a new gasket and install the four retaining nuts. Tighten the retaining nuts to 15-22 ft. lbs. (20-30 Nm).
  4.  
  5. Connect the radiator and heater hoses to the water pump. Make sure the clamps are securely tightened.
  6.  
  7. If equipped, install the A/C compressor-to-water pump brace. Tighten the brace bolts to 15-22 ft. lbs. (20-30 Nm).
  8.  
  9. Remove the water pump drive belt.
  10.  
  11. Fill the engine cooling system, then connect the negative battery cable.
  12.  
  13. Start the engine and allow it to reach normal operating temperature, then check for coolant leaks and proper engine operation.

  14.  


3.4L Engine

See Figure 13

  1. Disconnect the negative battery cable.
  2.  
  3. Drain the engine cooling system.
  4.  
  5. Remove the two flange bolts and four cap nuts and remove the engine appearance cover.
  6.  
  7. Remove the battery and battery tray.
  8.  
  9. Remove the water pump drive belt.
  10.  
  11. Disconnect the throttle body return and supply hoses, heater core return hose and the oil cooler return hose from the water pump.

  12.  
  13. Remove the two water hose connection (thermostat housing) retaining bolts and remove the thermostat.
  14.  
  15. Remove the bolts and collar retaining the water pump housing to the left side cylinder head.
  16.  
  17. Disconnect the water outlet and inlet hoses from the water pump and remove the water pump from the engine.

  18.  
  19. Unfasten the belt idler pulley retaining nut and remove the pulley from the water pump.
  20.  


To install:



Click image to see an enlarged view

Fig. Fig. 13: Exploded view of the water pump and its related components-3.4L DOHC engine

  1. Clean the water pump to engine and housing gasket sealing surfaces.
  2.  
  3. Install the belt idler pulley and retaining nut and tighten the retaining bolt to 89-141 inch lbs. (10-16 Nm).
  4.  
  5. Apply a silicone lubricant to the water pump inlet and outlet hoses, install them on the water pump housing and clamp securely.

  6.  
  7. Apply a silicone lubricant to the O-ring and install it between the water pump housing and left side cylinder head.
  8.  
  9. Install the bolts retaining the water pump housing to the left side cylinder head. Tighten the two retaining bolts at the water inlet to 71-106 inch lbs. (8-12 Nm). Tighten the two remaining retaining bolts to 14-20 ft. lbs. (18-28 Nm).
  10.  
  11. Install the water thermostat, oil cooler return tube gasket and water hose connection to the water pump housing and tighten the two retaining bolts to 71-106 inch lbs. (8-12 Nm).
  12.  
  13. Connect the throttle body return and supply hoses, heater core return hose and the oil cooler return hose to the water pump.
  14.  
  15. Install the water pump drive belt.
  16.  
  17. Install the engine appearance cover and tighten the two flange bolts and four cap nuts to 71-106 inch lbs. (8-12 Nm).
  18.  
  19. Fill the engine cooling system, then connect the negative battery cable.

  20.  
  21. Start the engine and allow it to reach normal operating temperature, then check for coolant leaks and proper engine operation.
  22.  


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