Toyota Celica 1986-1993 Repair Guide

Power Steering Gear

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ADJUSTMENTS



Adjustments to the power steering gear (rack and pinion) are not necessary during normal service. Adjustments are performed only as part of overhaul.

REMOVAL & INSTALLATION



1986-89 Models

WARNING
If vehicle is equipped with an air bag system, after repair is complete remove the steering wheel and make sure that the spiral cable is aligned properly. Refer to the necessary service procedures in this section.

  1. Disconnect the negative battery cable. Remove the steering column cover.
  2.  
  3. Disconnect universal joint from the gear housing. Place matchmarks before removing set bolts.
  4.  



Click image to see an enlarged view

Fig. Fig. 1 Removing components for power steering gear removal1986-89 Celica shown

  1. Raise and safely support the vehicle.
  2.  
  3. Remove both front wheels.
  4.  
  5. Place a drain pan below the power steering rack assembly. Clean the area around the line fittings on the rack.
  6.  
  7. Remove the cotter pins and nuts from both tie rod joints. Separate the joints from the knuckle using a tie rod separator or puller.
  8.  
  9. Support the transaxle with a jack. Remove the propeller shaft, if equipped.
  10.  
  11. Remove the rear bolts holding the engine crossmember to the body, if necessary for clearance. Remove the center and lower crossmembers on 4WD models.
  12.  
  13. Remove the nut and bolt holding the rear engine mount to the mount bracket.
  14.  
  15. Label and disconnect the fluid pressure and return lines at the steering rack.
  16.  
  17. Remove the bolts and nuts holding the rack brackets to the body. It will be necessary to slightly raise and lower the rear of the transaxle to gain access to the bolts.
  18.  
  19. Remove the steering rack through the access hole.
  20.  

To install:

  1. Place the steering rack in position through the access hole and install the retaining brackets to the body. Tighten the nuts and bolts evenly to 43 ft. lbs. (59 Nm).
  2.  
  3. Connect the fluid lines to the steering rack. Always start the threads by hand before tightening using a tool.
  4.  
  5. Install the nut and bolt holding the rear engine mount to the mount bracket.
  6.  
  7. Reinstall the engine crossmember bolts and tighten. Install the propeller shaft.
  8.  
  9. Remove the jack from the transaxle.
  10.  
  11. Connect the tie rod ends to the knuckles. Tighten the nuts to 36 ft. lbs. (49 Nm) and install new cotter pins. If the hole does not line up, always tighten the nut to the next hole. Do not loosen it to install the cotter pin.
  12.  
  13. Install the wheels and lower the vehicle to the ground.
  14.  
  15. Align matchmarks and connect universal joint to the steering gear housing. Tighten the upper and lower set bolts to 26 ft. lbs. (35 Nm).
  16.  
  17. Install the steering column cover. Add fluid and bleed the system (See Bleeding).
  18.  
  19. Reconnect the negative battery cable. Have the front wheel alignment checked.
  20.  

1990-93 2WD Models

WARNING
If vehicle is equipped with an air bag system, after repair is complete remove the steering wheel and make sure that the spiral cable is aligned properly. Refer to the necessary service procedures in this section. Before disconnecting the gear from the column, prevent the steering wheel from rotating by tying it in place, otherwise the clockspring can be damaged. If necessary to rotate the steering wheel, do not turn it more than 1 / 2 turn.

  1. Make sure the front wheels are pointing straight ahead. Disconnect the negative battery cable. Remove the steering column cover.
  2.  
  3. Disconnect universal joint from the gear housing. Place matchmarks before removing set bolts.
  4.  



Click image to see an enlarged view

Fig. Fig. 2 Removing components for power steering gear removal1990-93 2WD Celica shown

  1. Raise and safely support the vehicle.
  2.  
  3. Remove both front wheels.
  4.  
  5. Place a drain pan below the power steering rack assembly. Clean the area around the line fittings on the rack.
  6.  
  7. Remove the cotter pins and nuts from both tie rod joints. Separate the joints from the knuckle using a tie rod separator or puller.
  8.  
  9. Support the transaxle with a jack.
  10.  
  11. Remove the rear bolts holding the engine crossmember to the body, if necessary for clearance.
  12.  
  13. Remove the nut and bolt holding the rear engine mount to the mount bracket.
  14.  
  15. Label and disconnect the fluid pressure and return lines at the steering rack.
  16.  
  17. Remove the bolts and nuts holding the rack brackets to the body. It will be necessary to slightly raise and lower the rear of the transaxle to gain access to the bolts.
  18.  
  19. Remove the steering rack through the access hole.
  20.  

To install:

  1. Place the steering rack in position through the access hole and install the retaining brackets to the body. Tighten the nuts and bolts evenly to 43 ft. lbs. (59 Nm).
  2.  
  3. Connect the fluid lines to the steering rack. Always start the threads by hand before using a tool.
  4.  
  5. Install the nut and bolt holding the rear engine mount to the mount bracket.
  6.  
  7. Reinstall the engine crossmember bolts and tighten.
  8.  
  9. Remove the jack from the transaxle.
  10.  
  11. Connect the tie rod ends to the knuckles. Tighten the nuts to 36 ft. lbs. (49 Nm) and install new cotter pins. If the hole does not line up, always tighten the nut to the next hole. Do not loosen it to install the cotter pin.
  12.  
  13. Install the wheels and lower the vehicle to the ground.
  14.  
  15. Align matchmarks and connect universal joint to the steering gear housing. Tighten the upper and lower set bolts to 26 ft. lbs. (35 Nm)
  16.  
  17. Install the steering column cover. Add fluid and bleed the system.
  18.  
  19. Reconnect the negative battery cable. Check front wheel alignment.
  20.  

1990-93 4WD Models

WARNING
If vehicle is equipped with an air bag system, after repair is complete remove the steering wheel and make sure that the spiral cable is aligned properly. Refer to the necessary service procedures in this section. Before disconnecting the gear from the column, prevent the steering wheel from rotating by tying it in place, otherwise the clockspring can be damaged. If necessary to rotate the steering wheel, do not turn it more than 1 / 2 turn.

  1. Disconnect the negative battery cable. Remove the steering column cover.
  2.  
  3. Disconnect universal joint from the gear housing. Place matchmarks before removing set bolts.
  4.  
  5. Remove the air cleaner.
  6.  
  7. Remove the charcoal canister.
  8.  
  9. Disconnect the transaxle control cables.
  10.  
  11. Raise and safely support the vehicle.
  12.  
  13. Remove both front wheels and engine undercovers.
  14.  
  15. Remove the propeller shaft, center and lower crossmembers, stabilizer bar and exhaust pipe.
  16.  
  17. Remove the cotter pins from both tie rod ball joints and remove the nuts.
  18.  
  19. Using a tie rod separator, remove both tie rod joints from the knuckles.
  20.  
  21. Label and disconnect the fluid pressure and return lines from the rack.
  22.  
  23. Remove the nuts and bolts attaching the steering rack to the body.
  24.  
  25. Remove the steering rack.
  26.  

To install:

  1. Place the steering rack in position and tighten the bracket bolts evenly to 43 ft. lbs. (59 Nm).
  2.  
  3. Connect the fluid lines to the steering rack. Make certain the fittings are correctly threaded before tightening them.
  4.  
  5. Connect the tie rod ends to the knuckles. Tighten the nuts to 36 ft. lbs. (49 Nm) and install new cotter pins. If the hole does not line up, always tighten the nut to the next hole. Do not loosen it to install the cotter pin.
  6.  
  7. Position the center crossmember over the center and rear transaxle mount studs; start nuts on the center mount. Install the propeller shaft.
  8.  
  9. Loosely install the bolts holding the center crossmember to the radiator support.
  10.  
  11. Loosely install the front mount bolts.
  12.  
  13. Raise the main crossmember into position over the rear mount studs and align all underbody bolts. Install the rear mount nuts loosely.
  14.  
  15. Install the main crossmember to underbody bolts loosely.
  16.  
  17. Install the lower control arm bracket bolts loosely.
  18.  
  19. Loosely install the bolts holding the center crossmember to the main crossmember.
  20.  
  21. The crossmembers, bolts and brackets should now all be in place and held loosely by their nuts and bolts. If any repositioning is necessary, do so now.
  22.  
  23. Tighten the components to specifications.
  24.  
  25. Install the covers on the front and center mount bolts. Install the propeller (align matchmarks) shaft assembly. Reconnect front exhaust pipe. Connect the front stabilizer bar.
  26.  
  27. Install the front wheels and engine undercovers.
  28.  
  29. Lower the vehicle to the ground. Align matchmarks and connect universal joint to the steering gear housing. Tighten the upper and lower set bolts to 26 ft. lbs. (35 Nm).
  30.  
  31. Check the clockspring alignment, if equipped with an air bag (See Steering Wheel).
  32.  
  33. Install the steering column cover. Add fluid and bleed the system.
  34.  
  35. Reconnect the negative battery cable. Have the front wheel alignment checked.
  36.  



Click image to see an enlarged view

Fig. Fig. 3 Removing components for power steering gear removal1990-93 4WD Celica shown

OVERHAUL



Disassembly
  1. Clamp steering gear housing very loosely in a vise.
  2.  
  3. Remove right and left turn pressure tubes. Matchmark and remove the tie rod ends from the housing.
  4.  



Click image to see an enlarged view

Fig. Fig. 4 Power steering gear components1986-1989 Celica shown



Click image to see an enlarged view

Fig. Fig. 5 Power steering gear components1990-93 Celica shown

  1. Mark left and right boots for correct installation, remove the clamps then remove the boots.
  2.  
  3. Remove rack ends and unstake claw washers.
  4.  
  5. Remove the rack guide spring cap locknut.
  6.  
  7. Remove the rack guide spring cap.
  8.  
  9. Remove rack guide spring, rack guide and seat.
  10.  
  11. Remove the bearing guide lock nut.
  12.  
  13. Remove the bearing guide nut and dust cover.
  14.  
  15. Remove the control valve housing assembly.
  16.  
  17. Remove the spool valve spring seat and spring.
  18.  
  19. Remove the control valve. Remove the cylinder end stopper, spacer, oil seal and rack.
  20.  

Inspection

Check the steering rack for runout and for teeth wear or damage. The maximum runout is 0.012 in. (0.3mm). Replace the bushing, oil seals, Teflon® rings and O-rings if necessary.

Reassembly
  1. Apply molybdenum disulphide base grease or power steering fluid on all necessary parts upon installation.
  2.  
  3. Install rack into the rack housing.
  4.  
  5. Install cylinder end stopper.
  6.  
  7. Install control valve.
  8.  
  9. Install O-ring, spring and spool valve spring seat.
  10.  
  11. Install control valve housing. Torque housing retaining bolts to 23 ft. lbs. (31 Nm).
  12.  
  13. Install control valve lower bearing.
  14.  
  15. Install bearing guide nut, applying sealer. Torque to 11 ft. lbs. (15 Nm).
  16.  
  17. Adjust total preload-loosen the bearing guide nut until preload (turning) specification is 3.9-5.6 inch lbs.
  18.  
  19. Install bearing guide locknut. Tighten the locknut to 41 ft. lbs. (56 Nm).
  20.  
  21. Recheck the preload.
  22.  
  23. Install rack guide seat, rack guide and rack guide spring.
  24.  
  25. Adjust total preload. Torque the spring cap to 18 ft. lbs. (25 Nm). Loosen and tighten spring cap until preload is 7.8-10.4 inch lbs.
  26.  
  27. Install rack guide spring cap lock nut and torque to 41 ft. lbs. (56 Nm). Recheck preload.
  28.  
  29. Install inner tie rod ends (rack ends) and claw washers. Torque the rack ends to 53 ft. lbs. (72 Nm). Carefully stake the claw washers.
  30.  
  31. Install rack boots and clamps.
  32.  
  33. Align matchmarks and install outer tie rod ends.
  34.  
  35. Install right and left turn pressure tubes. Torque tubes to 14 ft. lbs. (20 Nm).
  36.  

 
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