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Home >> Porsche >> 2003 >> 911 Turbo, Automatic >> Repair and Diagnosis >> Suspension >> Wheels & Tire System >> Wheels, Tires, Suspension Alignment - 911 Turbo (996) >> Suspension Alignment, Complete >> Front axle >> Adjusting toe

Adjusting toe

WARNING: Danger of injury and damage to property due to malfunctions in the PSM control range if the steering angle sensor is not calibrated or is calibrated incorrectly!
  • Calibrate steering angle sensor with wheels in straight-ahead position with the Porsche System Tester 2!
  • The steering angle sensor actual value must be checked after a suspension alignment which resulted in no changes being made to the wheel alignment values!
NOTE: The steering angle sensor must be calibrated if the previous wheel alignment values (on rear and/or front axle) were changed. See CALIBRATING STEERING ANGLE SENSOR .

Preliminary work:

  1. Check whether the steering wheel is displaced with respect to the steering gear.
  2. To do this, Centre the steering gear as described below.
  3. Turn wheels to the straight-ahead position.
  4. Then readjust the front wheel alignment, if necessary, until pin No. -2-  in driver No. -1-  and the lug on the steering gear housing No. -4-  line up. Refer to Fig 1.

    No. -3-  is the desired breaking point for pins in new steering gears. Refer to Fig 1. The (new) pin No. 2 is inserted into driver No. 1 and lies with its underside within the recess of lug No. 4. This locks the steering gear in the Centre position. After installation of a new steering gear, the lower part of the pin is sheared off (at the desired breaking point No. -3-  ) by turning the steering wheel. The upper part of the pin remains in the driver.

    If necessary, reposition the steering wheel. When doing this, seek the best position.

    Fig 1: Adjusting Toe
    G03093803Courtesy of PORSCHE OF NORTH AMERICA, INC.
    WARNING: A triggering of the airbag (malfunction in the airbag system) caused by improper work on airbag components cannot be ruled out! In the case of such a malfunction, an unsuitable steering wheel holder could cause injury or damage!
  5. Clamp steering wheel in Centre position with steering wheel holder.
    NOTE: Use only steering wheel holders which do not project into the area of the airbag unit!
  6. If necessary, shorten the guide rod -A-  at top -(arrow)-  . See Fig 2.
    Fig 2: Identifying Guide Rod
    G03093804Courtesy of PORSCHE OF NORTH AMERICA, INC.
  7. Then adjust toe at hexagon -2-  of the track rod(s) after loosening the lock nut(s) -1-  . See Fig 3. The steering angle sensor must subsequently be calibrated by PSM!
    Fig 3: Adjusting Toe At Track Rod
    G03093805Courtesy of PORSCHE OF NORTH AMERICA, INC.
WARNING: Danger of injury and damage to property due to malfunctions in the PSM control range if the steering angle sensor is not calibrated or is calibrated incorrectly!
  • Calibrate steering angle sensor with wheels in straight-ahead position with the Porsche System Tester 2!
  • The steering angle sensor actual value must be checked after a suspension alignment which resulted in no changes being made to the wheel alignment values!
NOTE:
  • In order to tighten the tie rod lock nut(s) to the prescribed tightening torque, use an insert for torque wrench 9625 in conjunction with a torque wrench!
  • The prescribed lock nut tightening torque of 50 Nm (37 ft.lb) corresponds to a setting on the torque wrench of approx. 35 Nm (26 ft.lb).
    Fig 4: Tightening Tie Rod Lock Nut
    G03093806Courtesy of PORSCHE OF NORTH AMERICA, INC.
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