52 13 ... Retrofitting seat angle adjuster on front seat (normal/manual)

Special Tools Required: 

• 51 2 100

Necessary Preliminary Tasks: 

• Remove front seat, refer to 52 14 000 REMOVING AND INSTALLING LEFT OR RIGHT FRONT SEAT (NORMAL/ELECTRIC)  .
• Remove actuating unit, refer to 52 13 015 REMOVING AND INSTALLING/REPLACING CONTROLS ON LEFT/RIGHT FRONT SEAT (NORMAL/MANUAL)  .

Release screws (1).

Release screw (2).

Installation: 

Replace Taptite screws (1 & 2).

Remove connecting plate (3).

Fig 1: Locating Connecting Plate Screws

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Slide O-ring (1) on left and right onto shaft. Make sure O-rings are correctly located between seat angle adjuster and seat pan.

Install seat angle adjuster in seat pan and seat mechanism. Replace Taptite screws (2) and insert.

Tightening torque, (9 N.m.).

Replace Taptite screws (3) and insert.

Tightening torque, (9 N.m.).

Fig 2: Installing Seat Angle Adjuster In Seat Pan And Seat Mechanism

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Feed torsion bar spring (1) into seat mechanism.

Engage torsion bar spring (1) in seat mechanism.

Fig 3: Installing Torsion Bar Spring Into Seat Mechanism

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Installation: 

Make sure plastic protector (2) is correctly positioned on contact surface between torsion bar spring and seat mechanism (grating noises).

Lift torsion bar spring (1) with special tool 51 2 100 in direction of arrow onto seat angle adjuster.

Fig 4: Identifying Torsion Bar Spring

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