Seat Back Frame: Service and Repair

SEAT BACK FRAME REPLACEMENT - FRONT

REMOVAL PROCEDURE
1. Remove the seat back cover and pad assembly.




2. Pry the EZ-Entry release lever retaining clip (1) from the release mechanism.
3. Disconnect the return spring (2) from the release mechanism and seat back frame.




4. Remove the seat back rest filler block lock nuts (1), and the filler block (2).
5. Remove the seat back release lever tie strap mounted to the back of the lumbar support mechanism.




6. Remove two lumbar support assembly retainers (1).




7. Depress the lumbar support shaft retaining tab (1) from the inner side of the seat back frame.
8. Rotate the lumbar support shaft (2) and remove from the seat back frame.




9. Disconnect the 2 lumbar support springs (1).




10. Remove the lumbar support assembly (1).




11. Remove the 2 head restraint retaining screws (1).




12. Pull the head restraint (1), downward and remove from the seat back frame.




13. Depress the tab (1), on the head restraint frame sleeve (2) and remove from the seat back rest frame.




14. Remove the head restraint frame hinge spring (1).

INSTALLATION PROCEDURE




1. Install the head restraint frame hinge spring (1).




2. Push the head restraint frame sleeve (2) into the seat back rest frame until the head restraint sleeve tab (1) locks in place.




3. Position the head restraint (1), upward and into the seat back frame.




4. Install 2 head restraint retaining screws (1).

NOTE: Refer to Fastener Notice in Service Precautions.

Tighten the head restraint retaining screws to 4 N.m (35 lb in).




5. Position the lumbar support assembly (1).




6. Connect the 2 lumbar support springs (1).




7. Position the lumbar support shaft in the seat back frame, then rotate the lumbar support shaft (2) until the lumbar support shaft retaining tab (1) locks in place.
8. Install the seat back release lever tie strap to the back of the lumbar support mechanism.




9. Install two lumbar support assembly retainers (1).




10. Position the seat back rest filler block (2), then install the seat back filler block lock nuts (1).

Tighten the seat back rest filler block nuts to 5.5 N.m (49 lb in).




11. Connect the return spring (2) to the release mechanism and seat back frame.
12. Install the EZ-Entry release lever retaining clip (1) to the release mechanism.
13. Install the seat back cover and pad assembly.
14. Check the seat mechanical and electrical operation.