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Home >> Porsche >> 2021 >> 911 Targa 4 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 16 (40 Wheel Suspension Front Drive Shaft 3.0L (Eng Code MDK.KA) -- 992 - 911 CARRERA (992)) >> WM, 400919 Removing And Installing Front-Axle Cross Member >> Installing Front-Axle Cross Member

Installing Front-Axle Cross Member

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  1. Install front-axle cross member.
    1. 1.1  Position front-axle cross member in installation position using > VAS 6931 - Transmission and Engine Jack  .
    2. 1.2  Tighten screws on the front-axle cross member in the sequence -4, 2, 3, 5-  .

      Threaded joint securing front-axle cross member to the body -4-  (stud): > Tightening torque 25 Nm (19 ftlb.) 

      Threaded joint securing front-axle cross member to the body -4-  (nut): > Initial tightening 70 Nm (52 ftlb.)  > Final tightening + 90° 

      Threaded joint securing vertical strut to front-axle cross member -2-  : > Tightening torque 30 Nm (22 ftlb.) 

      Threaded joint securing control arm with front-axle cross member to the body -3-  : > Initial tightening 70 Nm (52 ftlb.)  > Final tightening + 180° 

      Threaded joint securing front-axle cross member to the body -5-  : > Initial tightening 70 Nm (52 ftlb.)  > Final tightening + 90° 

      Fig 1: Front-Axle Cross Member Screws Tightening Sequence
      G15520427Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Front-axle cross member

    3. 1.3  Fit longitudinal struts -1-  .
      Fig 2: Longitudinal Struts Screws Tightening Sequence
      G15520428Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Longitudinal struts

      1. 1.3.1  Tighten screws -2 to 4-  .

        Longitudinal strut with front-axle cross member to the body -2-  : > Tightening torque 100 Nm (74 ftlb.) 

        Longitudinal strut to body -3-  : > Tightening torque 100 Nm (74 ftlb.) 

        Longitudinal strut to body -4-  : > Tightening torque 40 Nm (30 ftlb.) 

  2. Applies only to all-wheel drive vehicles:  Fit bracket for all-wheel final drive -1-  on the front-axle cross member.
    G15520429Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Bracket for all-wheel final drive

    1. 2.1  Tighten studs -3-  . > Tightening torque 17 Nm (13 ftlb.) 
    2. 2.2  Unscrew nuts -2-  . > Initial tightening 30 Nm (22 ftlb.)  > Torque angle 90° 
  3. Secure wire harness at the right -1-  .
    G15520430Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Right wire harness

    1. 3.1 For TPM (Tyre Pressure Monitoring) 315 MHz (M-no. 7K4):  Secure wire harness in bracket -4-  .

      For TPM (Tyre Pressure Monitoring) 433 MHz (M-no. 7K3):  Secure wire harness in bracket -5-  .

    2. 3.2  Connect electric plug connection -2-  from the TPM control unit -3-  and lock it.
  4. Secure wire harness at the left -1-  .
    G15520431Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Left wire harness

    1. 4.1  Secure wire harness in brackets -3-  .
    2. 4.2  Connect and lock electric plug connection -2-  .
  5. Push on and lock electric plug connection -1-  from angle sensor for headlight beam adjustment on both sides of the vehicle.
    G15520432Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Electric plug connection

  6. Secure coolant lines -1-  and vent line -2-  on both sides of the vehicle at the connection point in front of the tunnel.
    G15520433Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Coolant lines/vent line (connection point in tunnel)

    1. 6.1  Push on and lock quick connectors -3 and 4-  .
  7. Secure wire harness in left wheel housing -1-  .
    G15520434Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Wire harness (connection point in wheel housing)

    1. 7.1  Connect and lock electric plug connection -4-  .
    2. 7.2  Secure electric plug connection and line -4-  in the brackets.
    3. 7.3  Connect and lock electric plug connection -3-  .
    4. 7.4  Secure electric plug connection -3-  in bracket.
    5. 7.5  Tighten nut -2-  on ground line. > Tightening torque 8 Nm (6 ftlb.) 
  8. Secure coolant lines -1-  and vent line -2-  on both sides of the vehicle at the connection point in the wheel housing.
    G15520435Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Coolant lines/vent line (connection point in wheel housing)

    1. 8.1  Push on and lock quick connectors -5 and 6-  .
    2. 8.2  Fit holder -3-  and tighten screw -4-  . > Tightening torque 8 Nm (6 ftlb.) 
  9. Applies only to all-wheel drive vehicles:  Fit coolant lines -1-  on the all-wheel final drive.
    G15520436Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Coolant lines for all-wheel final drive

    1. 9.1  Push on and lock quick connectors -2-  .
  10. Fit restraining straps -1-  .
    G15520437Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Restraining straps

    1. 10.1  Engage restraining straps on the front-axle cross member -5-  .
    2. 10.2  Tighten the screws -2-  .

      Vehicles with all-wheel drive: > Tightening torque 23 Nm (17 ftlb.) 

      Vehicles without all-wheel drive: > Tightening torque 23 Nm (17 ftlb.) 

    3. 10.3 Applies only to all-wheel drive vehicles:  Push on and lock electric plug connection -4-  on additional coolant pump.
    4. 10.4 Applies only to all-wheel drive vehicles:  Secure bracket -3-  for electric wire harness.
  11. Check that the steering column pin is offset. The center position marking on the sensor cover -1-  must be aligned with the marking on the protection cap -2-  .
    G15520438Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Power-steering gear in center position

  12. Fit bottom joint -1-  on power-steering gear -2-  .
    G15520439Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Bottom joint on power-steering gear

    1. 12.1  Tighten screw -3-  . > Pre-tightening 20 Nm (14.8 ftlb.)  > Final tightening + 90° 
  13. Fit connecting link for anti-roll bar -1-  on both sides of the vehicle on the anti-roll bar.
    G15520440Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Mounting for connecting link

    G15520441Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Mounting for connecting link for anti-roll bar (PDCC)

    1. 13.1  Tighten nut -2-  .

      Conventional anti-roll bar: > Initial tightening 40 Nm (29.5 ftlb.)  > Final tightening + 30°  PDCC anti-roll bar: > Initial tightening 50 Nm (37 ftlb.)  > Final tightening + 50° 

  14. Fit lower trailing arm -1-  on the wheel bearing housing.
    G15520442Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Mounting for lower trailing arm on wheel bearing housing

    1. 14.1  Tighten nut -2-  . > Tightening torque 100 Nm (74 ftlb.) 
    2. 14.2  Seal the threaded joint securing lower trailing arm to wheel bearing housing with wax as shown in -Illustration-  . Use Pfinder AP14/4 for this.
      G15520443Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Applying wax on marked area

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