67 31 630 Removing and installing/replacing backrest adjustment motor (comfort seats in rear passenger compartment)
Necessary preliminary work
- Partially remove left or right backrest cover . See 52 25 411 REPLACING BACKREST COVER FOR LEFT REAR SEAT or 52 25 412 REPLACING BACKREST COVER FOR RIGHT REAR SEAT .
Installation note:
- Powerlok screws must be replaced and must not be reused
- Powerlok screws are mechanical screw locks with trilobular threads
Installation note:
- Microencapsulated screws (Loctite) must be replaced and may not be reused
- Screw connection must be completed within 20 minutes (start of curing)
- Microencapsulated screws must not be retightened
- Clean thread of nut beforehand in event of repeated use
Unfasten plug connection (2) and disconnect.
Release screw (1).
Installation note:
Replace screw (1).
Tightening torque 67 31 16AZ .
Installation note:
Replace screws (1).
Tightening torque 67 31 15AZ .
Remove drive unit.
NOTE:
- Carry out FUNCTION CHECK WITH ADAPTER CABLE .
Replacement only:
INITIALIZE backrest adjustment motor.