Remove/install front seat backrest frame

AR91.10-S-5318E

Remove/install front seat backrest frame

25.04.2018

Model

447, 448.8

with code SF1 (Electrically adjustable luxury driver seat)

Model

447, 448.8

with code SF2 (Electrically adjustable co-driver's seat)

Modification notes

13.12.2016

Method extended

Operation steps 12, 15

Shown on model 447 with code SH1 (Driver thorax/pelvis sidebag) and with code SE5 (Driver seat lumbar support)

1

Backrest frame

5

Electrical connector

9

Rivets

2

Seat frame

6

Electrical connector

10

Armrest adapter

3

Electrical connector

7

Bolts

4

Lumbar support air cushion

8

Wire frame

Shown on model 447 with code SH2 (Front passenger thorax/pelvis sidebag) and with code SE1 (Seat climate control for front passenger)

1

Backrest frame

12

Electrical connector

3

Electrical connector

13

Electrical connector

11

Electrical connector

14

Electrical connector

 Warning

Risk of injury during testing and repair operations related to pyrotechnical components

Do not expose pyrotechnical component parts to temperatures above 100 °C or 212 °F. Disconnect current supply when working on such component parts.

AS91.00-Z-0008-01A

Topical note

Notes on carrying out repair work in the vehicle interior

AH68.00-N-0001-01S

Information, assessment and legal requirements when working with, handling and storing pyrotechnical components

AH91.00-Z-0000-10A

 

Remove/install

1

Remove left and right paneling at side of seat frame (2)

AR91.10-S-1200EE

2.1

Remove backrest padding with cover

If the backrest frame (1) is replaced.

Model 447.8, 448.8 with code SE0 (Seat climate control for driver) Model 447.8, 448.8 with code SE1 (Seat climate control for front passenger)

AR91.10-S-1095E

Model 447.6/7 with code SH1 (Driver thorax/pelvis sidebag) Model 447.6/7 with code SH2 (Front passenger thorax/pelvis sidebag) Model 447.8 with code ZK7 (MARCO POLO equipment line) except code SE0 (Seat climate control for driver) except code SE1 (Seat climate control for front passenger)

AR91.10-S-1095EA

Model 447.6/7 except code SH1 (Driver thorax/pelvis sidebag) except code SH2 (Front passenger thorax/pelvis sidebag)

AR91.10-S-1095EB

2.2

Release backrest padding with cover in area of screws/bolts (7)

If the backrest frame (1) is not replaced, but only removed.

Model 447.8, 448.8 with code SE0 (Seat climate control for driver) Model 447.8, 448.8 with code SE1 (Seat climate control for front passenger)

AR91.10-S-1095E

Model 447.6/7 with code SH1 (Driver thorax/pelvis sidebag) Model 447.6/7 with code SH2 (Front passenger thorax/pelvis sidebag) Model 447.8 with code ZK7 (MARCO POLO equipment line) except code SE0 (Seat climate control for driver) except code SE1 (Seat climate control for front passenger)

AR91.10-S-1095EA

Model 447.6/7 except code SH1 (Driver thorax/pelvis sidebag) except code SH2 (Front passenger thorax/pelvis sidebag)

AR91.10-S-1095EB

3

Disconnect electrical connection (3)

If the backrest padding with cover was not removed.

4

Disconnect electrical connectors (5, 6)

5

Disconnect electrical connection (11)

If the backrest padding with cover was not removed.

6

Disconnect electrical connector (12)

If the backrest padding with cover was not removed.

7

Remove and disconnect electrical connector (13) from backrest frame (1)

If the backrest padding with cover was not removed.

8

Disconnect electrical connector (14)

9

Remove all electrical lines from backrest frame (1)


Observe installation position of electric leads
Otherwise, erroneously routed electrical lines could become trapped when the backrest is adjusted.

 The number of electrical lines varies depending on the equipment installed.

10

Remove screw/bolts (7)

 Backrest to seat frame

*BA91.10-N-1002-01J

11

Remove backrest frame (1) from seat frame (2)

12

Unclip and remove seat adjustment motor for head restraint adjustment, driver's seat or seat adjustment motor for head restraint adjustment, front passenger seat from backrest frame (1)

If the backrest frame (1) is replaced.

AR91.29-S-6043E

13

Drill out rivet (9) and remove armrest adapter (10) from backrest frame (1)

If the backrest frame (1) is replaced.

General information on riveting

AH60.00-P-0003-01N

 Installation: Replace rivets (9).

 Commercially available devices/tools
Hand drill
Hand riveter

14

Disassemble and remove wire frame (8) together with lumbar support air cushion (4) from backrest frame (1)

If the backrest frame (1) is replaced.

15

Remove mounting bracket for Tablet PC holder

If the backrest frame (1) is replaced.

Model 447 with code EI7 (Tablet PC rear passenger compartment integration)

AR82.80-S-1096E

16

Install in the reverse order



Check

17

Perform function test on electric seat components

 Front seats

Number

Designation

Model 448

Model 447

BA91.10-N-1002-01J

Backrest to seat frame

Nm

30

30