Lexus Car ES, IS, LS 1998-06

Removal & Installation

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  1. Before servicing the vehicle, please familiarize yourself with safety procedures.
  2.  
  3. Place the front wheels in the straight ahead position with the steering wheel centered and locked with a steering wheel lock.
  4.  
  5. Drain or siphon the power steering system.

    Click image to see an enlarged view

    Fig. Remove the column (1) coupler shaft bolt (2) and remove the shaft from the gear (3)-2005 Grand Cherokee

  6.  
  7. Remove the column coupler shaft bolt and remove the shaft from the gear.
  8.  
  9. Remove the oil drip tray.

    Click image to see an enlarged view

    Fig. Remove the pressure line (1) and return line (2) at the gear (3) -2005 Grand Cherokee

  10.  
  11. Remove the pressure line at the gear.
  12.  
  13. Remove the return line at the gear.
  14.  
  15. Raise and support the vehicle.
  16.  
  17. Remove the front tires.

    Click image to see an enlarged view

    Fig. Tie rod end. (1) ball stud nut, (2) tie rod end, (3) jam nut, (4) tie rod, (5) ball joint-2005 Grand Cherokee

  18.  
  19. Loosen the tie rod end jam nuts.
  20.  
  21. Remove the outer tie rod end nut and separate the tie rod from the knuckle using the proper tool.
  22.  
  23. Remove the front splash shield.
  24.  
  25. With 4-wheel drive:
    1. With vehicle in neutral, position vehicle on hoist.
    2.  
    3. Remove skid plate.
    4.  
    5. Remove differential housing drain plug and drain fluid.
    6.  
    7. Mark front driveshaft and pinion flange. Remove driveshaft from pinion flange.
    8.  
    9. Remove halfshaft hub/bearing nuts.
    10.  
    11. Remove wheel speed sensors from hub/bearings.
    12.  
    13. Remove brake calipers bolts and remove calipers from caliper adapters.

      Click image to see an enlarged view

      Fig. Stabilizer link upper attaching nut (1), upper attaching bolt (2), stabilizer link (3), tie rod end (4), tie rod ball stud nut (5), lower link attaching bolt (6)-2005 Grand Cherokee

    14.  
    15. Remove stabilizer links bolts from lower control arms.
    16.  
    17. Remove upper ball joint nuts and separate ball joints from knuckles with Remover 8677, or equivalent.
    18.  
    19. Remove lower shock clevis nuts bolts from lower control arm.
    20.  
    21. Lean the knuckles out and push half shafts out of the hub/bearings.
    22.  
    23. Pry half shafts off the axles.
    24.  
    25. Remove differential vent hose.
    26.  
    27. Support axle with a lift/jack.

      Click image to see an enlarged view

      Fig. Remove bolt (1) from differential bushing (2)-2005 Grand Cherokee

    28.  
    29. Remove bolt from differential bushing.

      Click image to see an enlarged view

      Fig. Remove bolt (1) from axle tube bushing (2)-2005 Grand Cherokee

    30.  
    31. Remove bolt from axle tube bushing.

      Click image to see an enlarged view

      Fig. Remove bolts (1) from differential cover bracket (2) bushing-2005 Grand Cherokee

    32.  
    33. Remove bolts from differential cover bracket bushing.
    34.  
    35. Lower axle and from vehicle.

      Click image to see an enlarged view

      Fig. Steering gear mounting bolts (1)-2005 Grand Cherokee

    36.  

  26.  
  27. Remove the two steering gear mounting bolts.

    Click image to see an enlarged view

    Fig. Move the gear (1) to the full right position to allow clearance over the control arm-2005 Grand Cherokee

  28.  
  29. Move the gear to the full right position to allow clearance over the control arm then lower the gear down, then turn the gear to the full left position then to allow clearance then remove from the vehicle.
  30.  
  31. Remove the outer tie rod ends from the steering gear (if needed).
  32.  

To install:

  1. Install the outer tie rod ends.
  2.  
  3. Position the steering gear back into the vehicle the same way it was removed.
  4.  
  5. Install the steering gear mounting bolts. Tighten to 160 ft. lbs. (217 Nm).
  6.  
  7. Install the front splash shield.
  8.  
  9. Install the outer tie rod ends jam nuts loosely.
  10.  
  11. Install the outer tie rod ends to the knuckle and tighten the tie rod end nut to 70 ft. lbs. (95 Nm).
  12.  
  13. Install the pressure and return hoses to the steering gear and tighten to 21 ft. lbs. (28 Nm).
  14.  
  15. Install the oil filter drip tray.
  16.  
  17. Install the column coupler shaft into the lower coupling and install a new bolt. Tighten to 36 ft. lbs. (49 Nm).
  18.  
  19. With 4-wheel drive:
    1. Raise axle to vehicle.
    2.  
    3. Install differential cover axle bracket bushing bolts and tighten bolts to 35 ft. lbs. (47 Nm)
    4.  
    5. Install axle tube bushing bolt and nut. Tighten nut to 70 ft. lbs. (95 Nm).
    6.  
    7. Install differential bushing bolt and nut. Tighten nut to 70 ft. lbs. (95 Nm).
    8.  
    9. Install differential vent hose.
    10.  
    11. Install half shaft into axle and knuckles. Verify axles are engaged in the axle.
    12.  
    13. Install clevis bolt and nut on lower control arms and tighten to specification.
    14.  
    15. Install upper control arms on knuckles and tighten ball joint nuts to specifications.
    16.  
    17. Install tie rod ends and nuts on knuckles and tighten to specifications.
    18.  
    19. Install stabilizer bar links and bolts on lower control arms and tighten to specifications.
    20.  
    21. Install brake calipers on knuckles.
    22.  
    23. Install wheel speed sensor on hub/bearing.
    24.  
    25. Install halfshaft hub nuts and tighten to 100 ft. lbs. (136 Nm).
    26.  
    27. Install drive shaft on pinion flange with reference marks aligned.
    28.  
    29. Install drain plug and tighten to 44 ft. lbs. (60 Nm).
    30.  
    31. Fill differential housing and install fill plug. Tighten plug to 44 ft. lbs. (60 Nm).
    32.  
    33. Install skid plate.
    34.  

  20.  
  21. Install the wheel and tire assembly.
  22.  
  23. Remove the support and lower the vehicle.
  24.  
  25. Remove the steering wheel lock.
  26.  
  27. Fill the power steering pump.
  28.  
  29. Set the toe.
  30.  



Click image to see an enlarged view

Fig. Exploded view power steering gear assembly-SC 430

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Place the front wheels facing straight ahead.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable. Wait at least 90 seconds before performing any work.
     
    Front wheels
     
    Steering wheel switch & volume case
     
    Steering wheel pad
     
    Steering wheel column lower cover
     
    Horn button
     
    Steering wheel
     
    Brake caliper
     
    Tie rods from lower ball joint
     
    Engine under cover
     
    Front suspension member braces
     
    Steering slide yoke. Match-mark with control valve shaft before removal
     
    Oil feed tubes
     

  6.  
  7. Remove Rack & Pinion Assembly
  8.  
  9. Remove or disconnect the following:

    Tube clamps on rack assembly
     
    Connector assembly
     
    4 gear assembly set bolts
     
    Steering gear
     
    Steering rack housing bracket
     

  10.  
  11. Match-mark and remove tie rod assemblies
  12.  

To install:

  1. Install or connect the following:

    Tie rod assemblies. Align match marks
     
    Oil feed tubes
     
    Rack & Pinion gear assembly with 4 set bolts; torque to 48 ft. lbs (65 Nm)
     
    Steering sliding yoke assembly
     
    Pressure and return tubes
     
    Tie rod assemblies to lower ball joint; torque to 64 ft. lbs. (87 Nm)
     
    Brake calipers
     
    Front suspension member braces
     
    Engine under cover
     
    Center spiral cable
     
    Temporarily tighten steering wheel assembly
     
    Center steering wheel and fully tighten set nut
     
    Horn button
     
    Steering wheel covers
     
    Steering pad modulator switch
     
    Negative battery cable
     
    Bleed power steering system
     
    Front wheels
     

  2.  
  3. Inspect toe in and adjust as necessary
  4.  
  5. Test drive
  6.  

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Remove or disconnect the following:

    Negative battery cable and wait at least 90 seconds before working on the vehicle to disarm the air bag.
     
    Front wheels
     
    Left and right front fender apron seals
     
    Cotter pin and nut holding the steering knuckle to the tie rod end. Using a tie rod puller, disconnect the tie rod end from the steering knuckle.
     

  4.  
  5. Place matchmarks on the intermediate shaft and the control valve shaft.
  6.  
  7. Loosen the upper bolt and remove the lower bolt holding the control valve shaft to the intermediate shaft. Disconnect the intermediate shaft from steering rack housing.
  8.  
  9. Remove or disconnect the following:

    Tube clamp
     
    Return line and the pressure line from the control valve housing
     
    4 stabilizer bar bolts and 2 nuts. Position the stabilizer bar out of the way. Do not remove the sway bar from the vehicle.
     
    Heated Oxygen (HO 2 ) sensor (bank 1 sensor 1).
     
    2 steering gear mounting bolts and nuts. Remove the steering gear through the left side of the vehicle.
     

  10.  

To install:

  1. Install or connect the following:

    Steering gear on the vehicle and install the 2 mounting bolts and nuts. Tighten the nuts and bolts to 134 ft. lbs. (181 Nm).
     
    HO 2 sensor. Tighten the sensor to 33 ft. lbs. (44 Nm).
     
    Stabilizer bar bolts and nuts and tighten as follows: Bolts: 14 ft. lbs. (19 Nm); Nuts: 29 ft. lbs. (39 Nm).
     
    Pressure and return lines and tighten the connectors to 18 ft. lbs. (25 Nm).
     
    Tube clamp and tighten the nut to 84 inch lbs. (10 Nm).
     
    Intermediate shaft to the steering rack and tighten the retaining bolts to 26 ft. lbs. (35 Nm).
     
    Tie rods to the steering knuckles with the castellated nuts. Tighten the nut to 36 ft. lbs. and install a new cotter pin. The prongs of the cotter pin should be firmly wrapped around the flats of the nut.
     
    Front fender apron seals by installing the 2 bolts
     
    Front wheels and lower the vehicle
     
    Power steering fluid
     
    Negative battery cable
     

  2.  
  3. Release the steering wheel
  4.  
  5. Bleed the system
  6.  
  7. Check for leaks, adjust the toe-in and check the steering wheel center point
  8.  

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Remove or disconnect the following:

    Wheel(s)
     
    Engine undercover by removing the 8 bolts and 5 screws.
     
    Cotter pin and nut holding each tie rod to the steering knuckle.
     
    Tie rod end from the steering knuckle with a tie rod end puller.
     

  4.  
  5. Place matchmarks on the sliding yoke and control valve shaft.
  6.  
  7. Loosen the top bolt holding the sliding yoke to the intermediate shaft. Remove the bottom bolt holding the sliding yoke to the steering rack.
  8.  
  9. Remove or disconnect the following:

    Pressure feed and return lines to the rack and pinion
     
    Power steering connector
     
    4 mount bolts and nuts to the power steering rack
     
    2 brackets and grommets
     
    Power steering rack from the vehicle
     

  10.  

To install:

  1. Install or connect the following:

    Power steering rack to the vehicle.
     
    2 brackets and grommets to the power steering rack.
     
    4 bolts and tighten the bolts to 56 ft. lbs. (76 Nm).
     
    Power steering solenoid connector
     
    Pressure feed and return tubes. Tighten the union bolt to 36 ft. lbs. (49 Nm).
     

  2.  
  3. Align the matchmarks on the sliding yoke and control valve shaft.
  4.  
  5. Tighten the bolt holding the sliding yoke to the steering rack to 26 ft. lbs. (35 Nm).
  6.  
  7. Tighten the bolt holding the sliding yoke to the intermediate shaft to 26 ft. lbs. (35 Nm).
  8.  
  9. Install or connect the following:

    Tie rod end to the steering knuckle. Tighten the nut to 48 ft. lbs. (65 Nm). Install a new cotter pin.
     
    Engine undercover
     
    Wheel(s)
     

  10.  
  11. Bleed the power steering system and check the front end alignment.
  12.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    Negative battery cable and wait at least 90 seconds before working on the vehicle to disarm the air bag.
     
    Front wheels
     
    Engine under cover
     
    No. 2 engine under cover
     
    Front lower suspension member protector
     

  4.  
  5. Separate the steering sliding yoke sub-assembly as follows:
    1. To prevent steering wheel rotation and possible damage to the spiral cable, fix the steering wheel with the seat belt.
    2.  
    3. Loosen the bolts and slide, but do not separate the steering sliding yoke sub-assembly.
    4.  
    5. Matchmark the power steering gear assembly and the steering sliding yoke sub-assembly.
    6.  
    7. Separate the steering sliding yoke sub-assembly from the power steering gear assembly.

      Left and right tie rods from the steering knuckles
       

    8.  

  6.  
  7. Remove the bolts and remove the power steering gear assembly.
  8.  

To install:

  1. Install the steering gear assembly to its mounting position. Install the 2 bolts, washers and 2 nuts and torque to 87 ft. lbs. (118 Nm).
  2.  
  3. Reconnect the ground wire and other wiring connectors.
  4.  
  5. Install or connect the following:

    Tie rods to the steering knuckles and the nuts. Tighten the nut to 50 ft. lbs. (65 Nm) and install a new cotter pin. The prongs of the cotter pin should be firmly wrapped around the flats of the nut.
     
    Steering sliding yoke sub-assembly to the power steering gear assembly by aligning the matchmarks. Torque the 2 bolts to 26 ft. lbs. (35 Nm).
     
    Front lower suspension member protector
     
    No. 2 engine under cover
     
    Engine under cover
     
    Front wheels
     
    Negative battery cable
     

  6.  
  7. Inspect and adjust front wheel alignment.
  8.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    Negative battery cable and wait at least 90 seconds before working on the vehicle to disarm the air bag.
     
    Front wheels
     
    Left and right front fender apron seals
     
    Cotter pin and nut holding the steering knuckle to the tie rod end. Using a tie rod puller, disconnect the tie rod end from the steering knuckle.
     

  4.  
  5. Place matchmarks on the intermediate shaft and the control valve shaft.
  6.  
  7. Loosen the upper bolt and remove the lower bolt holding the control valve shaft to the intermediate shaft. Disconnect the intermediate shaft from steering rack housing.
  8.  
  9. Remove or disconnect the following:

    Tube clamp
     
    Return line and the pressure line from the control valve housing
     
    4 stabilizer bar bolts and 2 nuts. Position the stabilizer bar out of the way. Do NOT remove the sway bar from the vehicle.
     
    Heated Oxygen (HO 2 ) sensor (bank 1 sensor 1)
     
    2 steering gear mounting bolts and nuts. Remove the steering gear through the left side of the vehicle.
     

  10.  

To install:

  1. Install or connect the following:

    Steering gear on the vehicle and install the 2 mounting bolts and nuts. Tighten the nuts and bolts to 134 ft. lbs. (181 Nm).
     
    HO 2 sensor. Tighten the sensor to 33 ft. lbs. (44 Nm).
     
    Stabilizer bar bolts and nuts and tighten as follows: Bolts: 14 ft. lbs. (19 Nm); Nuts: 29 ft. lbs. (39 Nm).
     
    Pressure and return lines and tighten the connectors to 18 ft. lbs. (25 Nm)
     
    Tube clamp and tighten the nut to 84 inch lbs. (10 Nm)
     
    Intermediate shaft to the steering rack and tighten the retaining bolts to 26 ft. lbs. (35 Nm)
     
    Tie rods to the steering knuckles with the castellated nuts. Tighten the nut to 36 ft. lbs. and install a new cotter pin. The prongs of the cotter pin should be firmly wrapped around the flats of the nut.
     
    Front fender apron seals by installing the 2 bolts
     
    Front wheels and lower the vehicle
     
    Power steering fluid
     
    Negative battery cable
     

  2.  
  3. Release the steering wheel
  4.  
  5. Bleed the system
  6.  
  7. Check for leaks, adjust the toe-in and check the steering wheel center point
  8.  



Click image to see an enlarged view

Fig. Exploded view of the steering gear mounting-IS 300

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    Negative battery cable
     
    Steering wheel
     
    Front wheels
     
    Brake calipers
     
    Outer tie rod ends
     
    Engine under cover
     
    Intermediate shaft
     
    Front subframe brace
     
    Pressure and return lines
     
    Steering gear
     

  4.  

To install:

  1. Installation is the reverse of the removal procedure, while using the following torque values:

    Steering gear mounting bracket bolts: 54 ft. lbs. (74 Nm)
     
    Fluid return line: 30 ft. lbs. (40 Nm)
     
    Fluid pressure line: 31 ft. lbs. (42 Nm)
     
    Front subframe brace large bolts: 88 ft. lbs. (119 Nm)
     
    Front subframe brace small bolts: 43 ft. lbs. (58 Nm)
     
    Tie rod end nuts: 40 ft. lbs. (54 Nm)
     
    Steering wheel nut: 26 ft. lbs. (35 Nm)
     

  2.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    Wheel(s)
     
    Engine undercover by removing the 8 bolts and 5 screws
     
    Cotter pin and nut holding each tie rod to the steering knuckle
     
    Tie rod end from the steering knuckle with a tie rod end puller
     

  4.  
  5. Place matchmarks on the sliding yoke and control valve shaft.
  6.  
  7. Loosen the top bolt holding the sliding yoke to the intermediate shaft. Remove the bottom bolt holding the sliding yoke to the steering rack.
  8.  
  9. Remove or disconnect the following:

    Pressure feed and return lines to the rack and pinion
     
    Power steering connector
     
    4 mount bolts and nuts to the power steering rack
     
    2 brackets and grommets
     
    Power steering rack from the vehicle
     

  10.  

To install:

  1. Install or connect the following:

    Power steering rack to the vehicle.
     
    2 brackets and grommets to the power steering rack.
     
    4 bolts and tighten the bolts to 56 ft. lbs. (76 Nm).
     
    Power steering solenoid connector
     
    Pressure feed and return tubes. Tighten the union bolt to 36 ft. lbs. (49 Nm).
     

  2.  
  3. Align the matchmarks on the sliding yoke and control valve shaft.
  4.  
  5. Tighten the bolt holding the sliding yoke to the steering rack to 26 ft. lbs. (35 Nm).
  6.  
  7. Tighten the bolt holding the sliding yoke to the intermediate shaft to 26 ft. lbs. (35 Nm).
  8.  
  9. Install or connect the following:

    Tie rod end to the steering knuckle. Tighten the nut to 48 ft. lbs. (65 Nm). Install a new cotter pin.
     
    Engine undercover
     
    Wheel(s)
     

  10.  
  11. Bleed the power steering system and check the front end alignment.
  12.  



Click image to see an enlarged view

Fig. Power steering gear assembly and related components.-LS 430

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Place the front wheels facing straight ahead.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable. Wait at least 90 seconds before performing any work.
     
    Front wheels
     
    Steering wheel switch & volume case
     
    Steering wheel pad
     
    Steering wheel column lower cover
     
    Horn button
     
    Steering wheel
     
    Brake caliper
     
    Tie rods from lower ball joint
     
    Engine under cover
     
    Front suspension member braces
     
    Steering slide yoke. Match-mark with control valve shaft before removal
     
    Oil feed tubes
     

  6.  
  7. Remove Rack & Pinion Assembly
  8.  
  9. Remove or disconnect the following:

    Tube clamps on rack assembly
     
    Connector assembly
     
    4 gear assembly set bolts
     
    Steering gear
     
    Steering rack housing bracket
     

  10.  
  11. Match-mark and remove tie rod assemblies
  12.  

To install:

  1. Install or connect the following:

    Tie rod assemblies. Align match marks
     
    Oil feed tubes
     
    Rack & Pinion gear assembly with 4 set bolts; torque to 48 ft. lbs (65 Nm)
     
    Steering sliding yoke assembly
     
    Pressure and return tubes
     
    Tie rod assemblies to lower ball joint; torque to 64 ft. lbs. (87 Nm)
     
    Brake calipers
     
    Front suspension member braces
     
    Engine under cover
     
    Center spiral cable
     
    Temporarily tighten steering wheel assembly
     
    Center steering wheel and fully tighten set nut
     
    Horn button
     
    Steering wheel covers
     
    Steering pad modulator switch
     
    Negative battery cable
     
    Bleed power steering system
     
    Front wheels
     

  2.  
  3. Inspect toe in and adjust as necessary
  4.  
  5. Test drive
  6.  



Click image to see an enlarged view

Fig. Exploded view power steering gear assembly-ES 330

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Place the front wheels facing straight ahead.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable. Wait at least 90 seconds before performing any work.
     
    Front wheels
     
    Steering wheel switch & volume case
     
    Steering wheel pad
     
    Steering wheel column lower cover
     
    Horn button
     
    Steering wheel
     
    Tie rods from steering knuckle
     
    Steering intermediate shaft Match-mark with control valve shaft before removal
     
    Front stabilizer link assembly
     
    Front stabilizer brackets
     
    Oil feed tubes
     

  6.  
  7. Remove Rack & Pinion Assembly
  8.  
  9. Remove or disconnect the following:

    Tube clamps on rack assembly
     
    Connector assembly
     
    2 bolts and 2 nuts
     
    Steering gear
     

  10.  
  11. Power steering rack housing heat insulator
  12.  
  13. Right & Left turn pressure tubes from the rack assembly
  14.  
  15. Match-mark and remove tie rod assemblies
  16.  

To install:

  1. Install or connect the following:

    Tie rod assemblies. Align match marks
     
    Oil feed tubes
     
    Steering rack heat insulator
     
    Rack and pinion gear assembly with 2 bolts and 2 nuts; torque to 52 ft. lbs (70 Nm)
     
    Pressure and return tubes
     
    Front stabilizer brackets
     
    Front stabilizer link assembly
     
    Steering intermediate shaft
     
    Tie rod assemblies to 36 ft. lbs. (49 Nm)
     
    Center spiral cable
     
    Temporarily tighten steering wheel assembly
     
    Center steering wheel and fully tighten set nut
     
    Horn button
     
    Steering wheel covers
     
    Steering pad modulator switch
     
    Negative battery cable
     
    Bleed power steering system
     
    Front wheels
     

  2.  
  3. Inspect toe in and adjust as necessary
  4.  
  5. Test drive
  6.  

 
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