67 31 530 Removing and installing/replacing drive unit for backrest angle adjustment

Necessary preliminary tasks: 

• Remove front seat  , see 52 14 000 REMOVING AND INSTALLING LEFT OR RIGHT FRONT SEAT .
• Remove rear panel on front seat backrest  , see 52 14 198 REMOVING AND INSTALLING OR REPLACING REAR PANEL ON LEFT OR RIGHT FRONT SEAT BACKREST .
• Remove covers on front seat  , see 52 14 400 REPLACING COVER FOR LEFT OR RIGHT FRONT SEAT .

If necessary, disengage backrest cover (1) on left and right in lower area and lay outwards slightly.

Release screw (4).

Detach metal retaining ring (2) on left and right from drive rod (3).

Installation: 

Always replace metal retaining ring (2).

Make sure metal retaining ring (2) is correctly seated.

Pull out drive rod (1) until drive unit for backrest angle adjustment (2) is free.

Installation: 

Make sure drive rod (1) is correctly seated in drive unit for backrest angle adjustment (2).

Disconnect plug connection on drive unit for backrest angle adjustment (2).

Feed drive unit for backrest angle adjustment (2) out of backrest frame (3) and remove.

Replacement: 

Initialize  drive unit for backrest angle adjustment, see 67 31... Notes on initializing electric seat servodrives .