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Home >> BMW >> 2007 >> 335i 2D Convertible, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1663 (Electrical Drives - Repair) >> Drive, Seat Adjustment >> 67 31 540 Removing and installing/replacing drive for backrest head adjustment >> 67 31 540 Removing and installing/replacing drive for backrest head adjustment (model year 2009 through production date 07/2012)

67 31 540 Removing and installing/replacing drive for backrest head adjustment (model year 2009 through production date 07/2012)

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Necessary preliminary tasks: 

Disconnect plug connection (1).

Release screw (2).

Tightening torque 67 31 4AZ .

Fig 1: Identifying Plug Connection And Mounting Screws
G06213994Courtesy of BMW OF NORTH AMERICA, INC.

Pull shaft (1) in direction of arrow out of shaft receptacle (2).

Installation: 

Make sure shaft (1) is correctly seated in receptacle (2).

Release retaining ring (3).

Feed out drive unit for backrest head adjustment (4) and remove.

Fig 2: Removing Backrest Head Adjustment Drive Unit
G06213995Courtesy of BMW OF NORTH AMERICA, INC.

Removal and installation only 

Do not turn spindle (1) in order not to change measurement A.

Replacement: 

Adopt measurement A of removed drive unit for backrest head adjustment (2). If necessary, adjust measurement A by turning spindle (1).

INITIALIZE  drive unit for backrest head adjustment.

Fig 3: Adjusting Backrest Head
G04769170Courtesy of BMW OF NORTH AMERICA, INC.