Procedures

52 14 ... - Additional work in event of faulty longitudinal adjustment drive





Necessary preliminary tasks:
- Remove trims on upper rails





Removing longitudinal seat adjustment motor:
Unfasten plug connection (1) and disconnect.





Unlock retaining tabs.
Lift drive (1) with flex shaft out of guide in direction of arrow.
Pull flex shaft on left and right out of gearing.





Slide seat back.
Release screws (1) at front.





Slide seat forwards.
Release screws (1) at rear.

Important!
Cover door sill with protective covers (risk of damage).

Lift out front seat.





Installing longitudinal seat adjustment motor:
Insert short flex shaft (1).
Attach rubber grommet.





Installation:
Attach rubber grommet at 60° angle to plug housing.





Insert long flex shaft (1) with sleeve tube (2) and rubber grommet in plastic part (3).





Installation:
Attach assembly to motor at 60° angle to connector housing so that it cannot twist.





Slide seat rail with opening forwards or back until bushing for flex shaft mounting of worm gear is flush.
Insert flex shaft.





Slide short flex shaft (1) into longitudinal seat adjustment gearing square.
Bend long flex shaft (2) upwards and slide into longitudinal seat adjustment gearing.
Clip motor and flex shafts into carrier plate.





Installation:
PTFE hoses are shrink-fitted onto end pieces.
Check that hoses are free from damage.





Installation:
- Make sure flex shaft is correctly fitted on motor
- Carpet must not get between seat rails and floor pan in area of fastening points (grating noises)
- Powerlok screws must be replaced and must not be reused
- Powerlok screws are mechanical screw locks with trilobular threads
- Insert all screws loose to avoid twisting
- Tighten down all screws to specified torque
Tightening torque 52 10 1AZ.