Commander 2006-2007

Removal & Installation

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3.7L Engine



  1. Disconnect the negative battery cable.
  2.  
  3. Drain the cooling system.
  4.  
  5. Remove the two fan shroud-to-radiator screws.
  6.  
  7. Disconnect the coolant overflow hose.
  8.  
  9. Remove the accessory drive belt.
  10.  
  11. Remove the lower radiator hose from the water pump.
  12.  
  13. Remove the water pump mounting bolts.
  14.  
  15. Remove the water pump and gasket.
  16.  

To install:

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Fig. Water pump tightening sequence-3.7L & 4.7L engines

  1. Clean all of the gasket mating surfaces.
  2.  
  3. Install the water pump, using a new gasket, and tighten the mounting bolts in sequence to 40 ft. lbs. (54 Nm).
  4.  
  5. Spin the water pump by hand to ensure the pump impeller does not rub against the timing chain cover.
  6.  
  7. Connect the lower radiator hose to the water pump.
  8.  
  9. Install the accessory drive belt.
  10.  
  11. Reposition the fan shroud and install the two fan shroud-to-radiator screws.
  12.  
  13. Refill the cooling system to the correct level.
  14.  
  15. Connect the negative battery cable.
  16.  
  17. Start the engine and check for leaks.
  18.  

4.7L Engine



  1. Disconnect the negative battery cable.
  2.  
  3. Drain the cooling system.
  4.  
  5. Remove the accessory drive belt.
  6.  
  7. Remove the lower radiator hose from the water pump.
  8.  
  9. Remove the water pump mounting bolts.
  10.  
  11. Remove the water pump and gasket.
  12.  

To install:

  1. Clean all of the gasket mating surfaces.
  2.  
  3. Install the water pump, using a new gasket, and tighten the mounting bolts in sequence to 43 ft. lbs. (58 Nm).
  4.  
  5. Spin the water pump by hand to ensure the pump impeller does not rub against the timing chain cover.
  6.  
  7. Connect the lower radiator hose to the water pump.
  8.  
  9. Install the accessory drive belt.
  10.  
  11. Refill the cooling system to the correct level.
  12.  
  13. Connect the negative battery cable.
  14.  
  15. Start the engine and check for leaks.
  16.  

5.7L Engines



  1. Disconnect the negative battery cable.
  2.  
  3. Drain the cooling system.
  4.  
  5. Remove the accessory drive belt.
  6.  
  7. Remove the fan clutch assembly.
  8.  
  9. Remove the coolant overflow bottle.
  10.  
  11. Disconnect the windshield washer bottle wiring and hose.
  12.  
  13. Remove the fan shroud assembly.
  14.  
  15. Remove the A/C compressor and alternator brace.
  16.  
  17. Remove the idler pulleys.
  18.  
  19. Remove the accessory drive belt tensioner.
  20.  
  21. Disconnect the upper and lower radiator hoses.
  22.  
  23. Disconnect the heater hoses.
  24.  
  25. Remove the water pump mounting bolts and remove the water pump.
  26.  

To install:

  1. Install the water pump and tighten the mounting bolts to 18 ft. lbs. (24 Nm).
  2.  
  3. Connect the heater hoses.
  4.  
  5. Connect the upper and lower radiator hoses.
  6.  
  7. Install the accessory drive belt tensioner.
  8.  
  9. Install the idler pulleys.
  10.  
  11. Install the A/C compress and alternator brace. Tighten the mounting bolts and nuts to 21 ft. lbs. (28 Nm).
  12.  
  13. Install the fan shroud assembly.
  14.  
  15. Connect the windshield washer bottle wiring and hose.
  16.  
  17. Install the coolant overflow bottle.
  18.  
  19. Install the fan clutch assembly.
  20.  
  21. Install the accessory drive belt.
  22.  
  23. Refill the cooling system to the correct level.
  24.  
  25. Connect the negative battery cable.
  26.  
  27. Start the engine and check for leaks.
  28.  

 
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