LS400 1990-1997

Removal & Installation

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  1. Remove the oil pan protector.
  2.  
  3. Remove the engine under cover.
  4.  
  5. Drain the engine coolant.
  6.  
  7. Remove the battery clamp cover.
  8.  
  9. Remove the air cleaner inlet.
  10.  
  11. Remove the radiator reservoir hose.
  12.  
  13. Disconnect the upper radiator hose from the radiator.
  14.  
  15. Disconnect the lower radiator hose from radiator.
  16.  
  17. Disconnect the A/T oil cooler hoses from radiator.
  18.  
  19. Remove the No .2 fan shroud.
    1. Remove the 2 clips.
    2.  
    3. Disconnect the claw of the No.2 fan shroud from the hook of the No.1 fan shroud, and remove the No.2 fan shroud.

      Click image to see an enlarged view

      Fig. No. 2 fan shroud removal

    4.  

  20.  
  21. Remove the radiator assembly.
    1. Disconnect the ECT switch connector for the A/C cooling fan.
    2.  
    3. Disconnect the upper sides of the RH and LH cool air ducts.

      Click image to see an enlarged view

      Fig. Cool air duct removal

    4.  
    5. Remove the nut and upper radiator support. Remove the 2 upper radiator supports.
    6.  
    7. Lift out the radiator assembly.
    8.  
    9. Remove the 2 lower radiator supports from the radiator.
    10.  

  22.  
  23. Remove No. 1 fan shroud from radiator.
    1. Remove the 4 bolts and fan shroud.

      Click image to see an enlarged view

      Fig. No. 1 fan shroud removal



      Click image to see an enlarged view

      Fig. Radiator components (1 of 2)



      Click image to see an enlarged view

      Fig. Radiator components (2 of 2)

    2.  

  24.  

To install:

  1. Install the No. 1 fan shroud to radiator.
    1. Install the fan shroud with the 4 bolts. Tighten the bolts to 44 ft. lbs. (5.0 Nm).
    2.  

  2.  
  3. Install the radiator assembly.
    1. Install the 2 lower radiator supports to the radiator.
    2.  
    3. Place the radiator assembly on the body bracket.
    4.  
    5. Install the radiator with the 2 upper radiator supports and 2 nuts. Tighten nuts to 120 inch lbs. (13.5 Nm).
    6.  
    7. Install the upper sides of the RH and LH cool air ducts.
    8.  
    9. Connect the ECT switch connector for the A/C cooling fan.
      NOTE
      After installation, check that the rubber cushion of the support is depressed.

    10.  

  4.  
  5. Install the No. 2 fan shroud.
    1. Connect the claw of the No.2 fan shroud to the hook of the No.1 fan shroud.
    2.  
    3. Install the No.2 fan shroud with the 2 clips.
    4.  

  6.  
  7. Connect the upper radiator hose to radiator.
  8.  
  9. Connect the lower radiator hose to radiator.
  10.  
  11. Connect the A/T oil cooler hoses to radiator.
  12.  
  13. Install the radiator reservoir hose.
  14.  
  15. Fill with engine coolant.
  16.  
  17. Start engine and check for leaks.
  18.  
  19. Recheck the engine coolant level.
  20.  
  21. Install the air cleaner inlet.
  22.  
  23. Install the battery clamp cover.
  24.  
  25. Install the engine under cover.
  26.  
  27. Install the oil pan protector.
  28.  

 
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