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Home >> Toyota >> 2004 >> Avalon XLS >> Repair and Diagnosis >> Steering >> Power Steering >> Steering System >> Power Steering Gear >> Reassembly

Power Steering Gear: Reassembly

NOTE: When using a vise, do not overtighten it.
  1. COAT PARTS INDICATED BY ARROWS WITH POWER STEERING FLUID OR MOLYBDENUM DISULFIDE LITHIUM BASE GREASE (See  COMPONENTS   ) 
  2. INSTALL OIL SEAL 
    1. Coat a new oil seal lip with power steering fluid.
    2. Using SST, press in the oil seal.
      Fig 1: Pressing In Oil Seal Using SST
      G02818330Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      SST 09950-60010 (09951-00240, 09951-00430, 09952-06010), 09950-70010 (09951-07360)

    NOTE:
    • Make sure that the oil seal is installed facing in the correct direction.
    • Take care that the oil seal does not get reversed as you install it.
  3. INSTALL STEERING RACK 
    1. Install SST to the steering rack.

      SST 09631-33010

      NOTE: If necessary, scrape the burrs off the steering rack teeth end and burnish.
    2. Coat the SST with power steering fluid.
    3. Install the steering rack into the rack housing.
      Fig 2: Installing Steering Rack
      G02818331Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE: Be careful not to damage the oil seal lip.
    4. Remove SST.

      SST 09631-33010

  4. INSTALL BUSHING 
    1. Coat a new O-ring with power steering fluid and install it to the bushing.
    2. To prevent oil seal lip damage, wind vinyl tape on the steering rack end, and apply power steering fluid.
    3. Install the bushing.
    4. Fig 3: Installing Bushing
      G02818332Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE:
    • Make sure that the bushing is installed facing in the correct direction.
    • Be careful not to damage the oil seal lip.
  5. INSTALL CYLINDER END STOPPER 
    1. Align the installation hole for the wire of the cylinder end stopper with the slot of the rack housing.
    2. Install a new wire into the cylinder end stopper.
    3. Using SST, turn the cylinder end stopper clockwise 450 +/- 50°.
      Fig 4: Installing Cylinder End Stopper Using SST
      G02818333Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      SST 09631-10021

  6. AIR TIGHTNESS TEST 
    Fig 5: Testing Air Tightness
    G02818334Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Install SST to the rack housing.

      SST 09631-12071

    2. Apply 53 kPa (400 mmHg, 15.75 in.Hg) of vacuum for about 30 seconds.
    3. Check that there is no change in the vacuum.

    If there is change in the vacuum, check the installation of the oil seals.

  7. INSTALL RACK HOUSING NO. 2 BRACKET AND RACK HOSING NO. 2 GROMMET 
    1. Install the rack housing No. 2 grommet to the rack housing No. 2 bracket.
      Fig 6: Installing Rack Housing No. 2 Grommet To Rack Housing No. 2 Bracket
      G02818335Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE: Align the projection of the rack housing No. 2 grommet with the hole of the rack housing No. 2 bracket.
    2. Align the matchmarks on the rack housing No. 2 bracket and rack housing.
    3. Place the rack housing No. 2 bracket in a vise and install the vise to fasten the clamp.
    Fig 7: Placing Rack Housing No. 2 Bracket In Vise
    G02818336Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. INSTALL CONTROL VALVE ASSEMBLY 
    1. To prevent oil seal lip damage, wind vinyl tape on the serrated part of the control valve shaft.
    2. Coat the teflon rings with power steering fluid.
    3. Install the control valve assembly into the control valve housing.
    4. Fig 8: Installing Control Valve Assembly
      G02818337Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE: Be careful not to damage the teflon rings and oil seal.
  9. INSTALL OIL SEAL 
    1. Coat a new oil seal lip with power steering fluid.
    2. Using SST, press in the oil seal.
      Fig 9: Pressing In Oil Seal Using SST
      G02818338Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      SST 09612-22011

    NOTE: Make sure that the oil seal is installed facing in the correct direction.
  10. INSTALL CONTROL VALVE HOUSING WITH CONTROL VALVE ASSEMBLY 
    1. Place a new gasket on the rack housing.
    2. Align the matchmarks on the control valve housing and rack housing.
    3. Install the 2 bolts.

      Torque: 18 N.m (180 kgf.cm, 13 ft.lbf) 

  11. INSTALL SELF-LOCKING NUT 

    Using SST, stop the control valve shaft rotating and install a new self-locking nut.

    Fig 10: Installing Self-Locking Nut Using SST
    G02818339Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    SST 09616-00011

    Torque: 25 N.m (250 kgf.cm, 18 ft.lbf) 

  12. INSTALL DUST SEAL 
  13. INSTALL RACK HOUSING CAP 
    1. Apply sealant to 2 or 3 threads of the rack housing cap.

      Sealant: 

      Part No.08833-00080, THREE BOND 1344, 

      LOCTITE 242 or equivalent 

    2. Install the rack housing cap.

      Torque: 59 N.m (600 kgf.cm, 43 ft.lbf) 

    3. Using a punch and hammer, stake the 2 parts of the rack housing cap.
    Fig 11: Installing Rack Housing Cap Using A Punch & Hammer
    G02818340Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  14. INSTALL RACK GUIDE SUB- ASSEMBLY, RACK GUIDE SPRING AND RACK GUIDE SPRING CAP 
    1. Install the rack guide sub- assembly and rack guide spring.
    2. Apply sealant to 2 or 3 threads of the rack guide spring cap.

      Sealant: 

      Part No.08833-00080, THREE BOND 1344, 

      LOCTITE 242 or equivalent 

    3. Temporarily install the rack guide spring cap.
  15. ADJUST TOTAL PRELOAD 
    1. To prevent the steering rack teeth from damaging the oil seal lip, temporarily install the RH and LH rack ends.
    2. Using SST, torque the rack guide spring cap.
      Fig 12: Torquing Rack Guide Spring Cap Using SST
      G02818341Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      SST 09631-10021

      Torque: 25 N.m (250 kgf.cm, 18 ft.lbf) 

    3. Using SST, return the rack guide spring cap 12°.
      Fig 13: Turning Rack Guide Spring Cap 12° Using SST
      G02818342Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      SST 09631-10021

    4. Using SST, turn the control valve shaft right and left 1 or 2 times.
      Fig 14: Turning Control Valve Shaft Right & Left Using SST
      G02818343Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      SST 09616-00011

    5. Using SST, loosen the rack guide spring cap until the rack guide spring is not functioning.

      SST 09631-10021

    6. Using SST and a torque wrench, tighten the rack guide spring cap until the preload is within specification.
      Fig 15: Tightening Rack Guide Spring Cap Using SST & A Torque Wrench
      G02818344Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      SST 09616-00011, 09631-10021

      Preload (turning): 

      0.8 - 1.4 N.m (8 - 14 kgf.cm, 6.9 - 12.2 in..lbf) 

  16. INSTALL RACK GUIDE SPRING CAP LOCK NUT 
    1. Apply sealant to 2 or 3 threads of the rack guide spring cap lock nut.

      Sealant: 

      Part No.08833-00080, THREE BOND 1344, 

      LOCTITE 242 or equivalent 

    2. Temporarily install the rack guide spring cap lock nut.
    3. Using SST, hold the rack guide spring cap and using another SST torque the rack guide spring cap lock nut.
      Fig 16: Installing Rack Guide Spring Cap Lock Nut Using SST
      G02818345Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      SST 09631-10021, 09922-10010

      Torque: 50 N.m (510 kgf.cm, 37 ft.lbf) 

      NOTE: Use SST 09922-10010 in the direction shown in the illustration.
      NOTE: Use a torque wrench with a fulcrum length of 345 mm (13.58 in.).
    4. Recheck the total preload.

      Preload (turning): 

      0.8 - 1.4 N.m (8 - 14 kgf.cm, 6.9 - 12.2 in..lbf) 

    5. Remove the RH and LH rack ends.
  17. INSTALL RH AND LH CLAW WASHERS AND RACK ENDS 
    1. Install a new claw washer, and temporarily install the rack ends.
      Fig 17: Installing New Claw Washer
      G02818346Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE: Align the claws of the claw washers with the steering rack grooves.
    2. Using a spanner (24 mm), hold the steering rack steadily and using SST, torque the rack end.
      Fig 18: Torquing Rack End Using A Spanner
      G02818347Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      SST 09922-10010

      Torque: 60 N.m (610 kgf.cm, 44 ft.lbf) 

      NOTE: Use SST 09922-10010 in the direction shown in the illustration.
      NOTE: Use a torque wrench with a fulcrum length of 345 mm (13.58 in.).
    3. Using a brass bar and hammer, stake the claw washer.
      Fig 19: Staking Claw Washer Using A Brass Bar & Hammer
      G02818348Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE: Avoid any impact on the steering rack.
    4. Employ the same manner described above to the other side.
  18. INSTALL RH AND LH RACK BOOTS, CLAMPS AND CLIPS 
    1. Ensure that the steering rack hole is not clogged with grease.
      NOTE: If the hole is clogged, the pressure inside the rack boot will change after it is assembled and the steering wheel is turned.
      Fig 20: Locating Steering Rack Hole
      G02818349Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Install the rack boot, clip and a new clamp.
      NOTE: Be careful not to damage or twist the rack boot.
    3. Using SST, tighten the clamp as shown in the illustration.
      Fig 21: Tightening Clamp Using SST
      G02818350Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      SST 09521-24010

    4. Employ the same manner described above to the other side.
  19. INSTALL RH AND LH TIE ROD ENDS AND LOCK NUTS 
    1. Screw the lock nut and tie rod end onto the rack end until the matchmarks are aligned.
    2. After adjusting toe-in, torque the lock nut (See INSPECTION ).

      Torque: 74 N.m (750 kgf.cm, 54 ft.lbf) 

    3. Employ the same manner described above to the other side.
    Fig 22: Aligning Match Mark
    G02818351Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  20. INSTALL 2 TURN PRESSURE TUBES 
    1. Coat 4 new O-rings with power steering fluid and install them to the 2 turn pressure tubes.
    2. Using SST, install the 2 turn pressure tubes.
      Fig 23: Installing Turn Pressure Tubes Using SST
      G02818352Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      SST 09023-38200

      Torque: 12 N.m (120 kgf.cm, 9 ft.lbf) 

    NOTE:
    • Use a torque wrench with a fulcrum length of 250 mm (9.84 in.).
    • This torque value is effective in case that SST is parallel to a torque wrench.