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Home >> Porsche >> 2021 >> 911 Targa 4 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 46 (40 Wheel Suspension Front Drive Shaft 3.8L (Eng Code MDK.H) -- 992 - 911 CARRERA (992)) >> WM, 401719 Removing And Reinstalling Lower Trailing Arm >> Installing Lower Trailing Arm

Installing Lower Trailing Arm

WARNING: This page is about a different variant/trim than selected.
  1. Move lower trailing arm into installation position.
  2. Fit lower trailing arm -1-  to front-axle cross member.
    G15523015Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Mounting for lower trailing arm on front-axle cross member

    1. 2.1  Screw in screws -2-  as far as they will go (do not tighten!).
  3. Fit control arm -1-  on lower trailing arm.
    G15523016Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Mounting for control arm

    1. 3.1  Screw in screws -2-  as far as they will go (do not tighten!).
  4. Fit lower trailing arm -1-  on the wheel bearing housing.
    G15523017Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Mounting for lower trailing arm on wheel bearing housing

    1. 4.1  Tighten nut -2-  . > Tightening torque 100 Nm (74 ftlb.) 
    2. 4.2  Seal the threaded joint securing lower trailing arm to wheel bearing housing with wax as shown in -Illustration-  . Use Pfinder AP14/4 for this (see Parts Information)
      G15523018Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Applying wax on marked area

  5. Tighten threaded joints in zero position.
    WARNING: Wheel bearing housing raised incorrectly
    • Risk of crushing
    • Risk of damage to components

      → Wear personal protective gear

      → Do not raise the wheel suspension higher than the normal vehicle position (vehicle resting on wheels).

    Information 

    Threaded joints must only be tightened in zero position to prevent warping in the bearings.

    1. 5.1  Lift the wheel bearing housing as far as required using lifting equipment (e.g. > VAS 6931 - Transmission and Engine Jack  ) until the lower trailing arm is horizontal. > Zero position 
      G15523019Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Zero position

    2. 5.2  Tighten threaded joint -2-  of lower trailing arm -1-  > Initial tightening 70 Nm (52 ftlb.)  > Final tightening + 180° 
      G15523020Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Mounting for lower trailing arm on front-axle cross member

    3. 5.3  Tighten threaded joint -2-  for control arm. > Tightening torque 160 Nm (118 ftlb.) 
      G15523021Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Mounting for control arm

  6. Fit angle sensor for headlight beam adjustment -1-  .
    G15523022Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Mounting for angle sensor for headlight beam adjustment

    1. 6.1  Tighten screws -2-  .
  7. Secure brake disc air guide -1-  .
    G15523023Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Mounting for brake disc air guide

    1. 7.1  Tighten tie-wraps -2-  using > VAS 6927 - Tie-wrap pliers  .
  8. Install cover on lower trailing arm -1-  .
    G15523024Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Mounting for cover on lower trailing arm

    1. 8.1  Tighten screws -2-  . > Tightening torque 10 Nm (7.5 ftlb.)