LS400 1990-1997

Removal & Installation

Print

Specific to:

Lexus LS400 1995-1997

  1. Disconnect the negative battery cable from the battery.
  2.  
  3. Remove the engine undercover by removing the eight bolts and five screws.
  4.  
  5. Remove the right hand rear engine undercover by removing the three bolts.
  6.  
  7. Remove the air cleaner inlet and battery clamp cover by removing the bolt.
  8.  
  9. Remove the air cleaner assembly with the air cleaner hose.
  10.  
  11. If equipped with TRAC, disconnect the TRAC actuator as follows:
    1. Using SST 09023-00100 or equivalent, disconnect the four brake lines from the TRAC actuator.
    2.  
    3. Disconnect the brake hose from the brake line of the actuator.
    4.  
    5. Remove the nut and two bolts from the body and ABS actuator bracket.
    6.  
    7. Disconnect the brake line clamp from the TRAC actuator bracket.
    8.  
    9. Remove the TRAC actuator assembly from the engine compartment.
    10.  

  12.  
  13. Remove the ABS actuator as follows:
    1. Using SST 09023-00100 or equivalent, disconnect the five (w/o TRAC) or seven (w/TRAC) brake lines from the ABS actuator.
    2.  
    3. Disconnect the two connectors from the ABS actuator.
    4.  
    5. If equipped without TRAC system, remove the nut, two bolts and the ABS actuator.
    6.  
    7. If equipped with TRAC system, remove the nuts, bolt and the ABS actuator.
    8.  

  14.  
  15. Loosen the drive belt tension by turning the drive belt tensioner counterclockwise and remove the drive belt.
  16.  
  17. Disconnect the power steering return hose.
  18.  
  19. Disconnect the two vacuum hoses to the power steering pump.
  20.  
  21. Disconnect the pressure feed line to the power steering pump by removing the union bolt and gasket.
  22.  
  23. Remove the nut and three bolts from the power steering pump and remove the pump.
  24.  

To install:

  1. Install the power steering pump to the engine and install the nut and three bolts. Torque the bolts to 29 ft. lbs. (39 Nm) and the nut to 32 ft. lbs. (43 Nm).
  2.  
  3. Install the pressure feed tube and torque the union bolt over a new gasket to 36 ft. lbs. (49 Nm).
  4.  
  5. Install the drive belt.
  6.  
  7. Connect the two vacuum hoses to the power steering pump.
  8.  
  9. Connect the return hose to the power steering pump.
  10.  
  11. Install the ABS actuator as follows:
    1. If equipped with TRAC, install the ABS actuator assembly with the bolt and nuts. Torque the bolts and nuts to 14 ft. lbs. (19 Nm).
    2.  
    3. If equipped without TRAC, install the ABS actuator assembly with the bolts and nut. Torque the bolts and nuts to 14 ft. lbs. (19 Nm).
    4.  
    5. Connect the two connectors to the ABS actuator.
    6.  
    7. Using the same tool as installation, connect the brake lines to the ABS actuator. Torque the lines to 11 ft. lbs. (15 Nm).
    8.  

  12.  
  13. Install the TRAC actuator as follows:
    1. Install the TRAC actuator and install the brake line clamp.
    2.  
    3. Install the nut and two bolts to the body and ABS actuator bracket. Torque the two bolts to 14 ft. lbs. (19 Nm).
    4.  
    5. Connect the connector to the actuator.
    6.  
    7. Connect the brake hose to the brake line of the actuator.
    8.  
    9. Using the same tool as installation, connect the four brake lines to the TRAC actuator. Torque the lines to 11 ft. lbs. (15 Nm).
    10.  
    11. Bleed the brake system.
    12.  

  14.  
  15. Install the air cleaner assembly with the air cleaner hose.
  16.  
  17. Install the right hand rear engine undercover with the three bolts.
  18.  
  19. Install the engine undercover by installing the eight bolts and five screws.
  20.  
  21. Bleed the power steering system.
  22.  
  23. Connect the negative battery cable to the battery.
  24.  

Specific to:

Lexus LS400 1990-1994, 1998-1999

  1. Remove engine under cover
    1. Remove the 9 bolts, 6 screws, 2 clips and engine under cover.
    2.  

  2.  
  3. Remove RH rear engine under cover
    1. Remove the 3 bolts and RH rear engine under cover.
    2.  

  4.  
  5. Remove air cleaner inlet and battery clamp cover
    1. Remove the bolt, air cleaner inlet and battery clamp cover.
    2.  

  6.  
  7. Remove air cleaner assembly with air cleaner hose
    1. Disconnect the MAF meter connector.
    2.  
    3. Remove the clamp.
    4.  
    5. Remove the 3 bolts and air cleaner assembly with air cleaner hose.
    6.  

  8.  
  9. Remove brake actuator assembly
  10.  
  11. Remove drive belt
    1. Loosen the drive belt tension by turning the drive belt tensioner counterclockwise, and remove the drive belt.

      Click image to see an enlarged view

      Fig. Drive belt removal

    2.  

  12.  
  13. Disconnect 2 vacuum hoses
    1. Remove the 2 clips and disconnect the 2 vacuum hoses.
    2.  

  14.  
  15. Disconnect return hose
    1. Remove the clip and disconnect the return hose.
    2.  

  16.  
  17. Disconnect pressure feed tube
    1. Remove the union bolt and gasket, and disconnect the pressure feed tube.
    2.  

  18.  
  19. Remove PS vane pump assembly
    1. Remove the 2 bolts, nut and PS vane pump assembly.
    2.  

  20.  

To install:

  1. Install PS vane pump assembly
    1. Install the PS vane pump assembly with the 2 bolts and nut. Tighten the bolt to 29 ft. lbs. (39 Nm), and the nut to 32 ft. lbs. (43 Nm).
    2.  

  2.  
  3. Install pressure feed tube
    1. Install a new gasket, then connect the pressure feed tube with the union bolt. Tighten bolt to 36 ft. lbs. (49 Nm).
      NOTE
      Make sure the stopper of the pressure feed tube touches the PS vane pump body as shown in the illustration, then torque the union bolt.

    2.  

  4.  
  5. Connect return hose
    1. Connect the return hose with the clip.
    2.  

  6.  
  7. Connect 2 vacuum hoses
    1. Connect the 2 vacuum hoses with the 2 clips.
    2.  

  8.  
  9. Install drive belt
    1. Loosen the drive belt tension by turning the drive belt tensioner counterclockwise, and install the belt.
    2.  

  10.  
  11. Install brake actuator assembly
  12.  
  13. Install air cleaner assembly with air cleaner hose
    1. Install the air cleaner assembly with air cleaner hose with the 3 bolts.
    2.  
    3. Install the clamp.
    4.  
    5. Connect the MAF meter connector.
    6.  

  14.  
  15. Install air cleaner inlet and battery clamp cover
    1. Install the air cleaner inlet and battery clamp cover with the bolt.
    2.  

  16.  
  17. Install RH rear engine under cover
    1. Install the RH rear engine under cover with the 3 bolts.
    2.  

  18.  
  19. Install engine under cover
    1. Install the engine under cover with the 9 bolts, 6 screws and 2 clips.
    2.  

  20.  
  21. Bleed power steering system
  22.  

 
label.common.footer.alt.autozoneLogo