Removing Upper Trailing Arm

Information 

Due to a change in the attachment concept for HBA angle sensor and trailing arm at the top, the following must be noted when replacing the trailing arm:

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Old/new attachment concept

• HBA angle sensor with clip connection -A- for vehicles with production date up to 26.03.2019. 
• HBA angle sensor with threaded connection -B- for vehicles with production date from 27.03.2019. 

Information 

If the upper trailing arm is to be used again, mark its position with respect to the body -arrows-  using a felt-tip pen for example (assembly aid).

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Marking upper trailing arm

• Production seams on the trailing arm can serve as the marking (useful when replacing the trailing arm). 
• Apply a different marking on the body. 
• Threaded joints can no longer be adjusted once the work is done as the threaded joints are no longer accessible. 

1. Loosen fastening screws -1-  and remove upper trailing arm. Fastening nuts -2-  can be accessed from the plenum panel.

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   Mounting for upper trailing arm

2. If the trailing arm is replaced at the top and a clip-mounted HBA angle sensor was installed:  Replace HBA angle sensor.

   > Refer to 947855 Replacing front angle sensor for headlight beam adjustment  in the appropriate service information.