Remove/install front seat backrest frame - AR91.10-P-3331SC

MODEL 216.3 

Fig 1: Identifying Front Seat Backrest Frame Components

Courtesy of MERCEDES-BENZ USA

Shown on right front seat 

	Remove/install
1	Remove seat cushion of left or right front seat		AR91.10-P-3310SC
2	Remove spring frame with air cushion		AR91.10-P-2050SC
3	Remove wiring harness from backrest frame (1)	Number of electrical connectors differs according to configuration. Installation:  Pay attention to routing and attachment of wiring harness.
4	Remove left and right expansion clip (3), unclip left and right paneling (2)
5	Warm up bolt (4) at backrest fitting and remove	Installation:  Replace bolt (4) and corresponding washer.
			*BA91.10-P-1004-01O
			*WH58.30-Z-1004-20A
6	Warm up bolts (5) at backrest fitting and remove	Installation:  Replace bolts (5).
			*BA91.10-P-1005-01O
			*WH58.30-Z-1004-20A
7.1	Remove left front multicontour backrest control unit or right front multicontour backrest control unit	When replacing the backrest frame (1) on vehicles with code (409) Left/right front multicontour seats or code (432) Left and right dynamic multicontour seat.
	Notes on avoiding damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
8.1	Remove seat belt	When replacing the backrest frame (1).	AR91.40-P-1010SC
9	Remove backrest frame (1)
10.1	Remove detachable parts	When replacing the backrest frame (1).
11	Install in the reverse order

FRONT SEATS

Number	Designation		Model 216
BA91.10-P-1004-01O	Bolt for inner backrest fitting	Nm	46
BA91.10-P-1005-01O	Bolt for outer backrest fitting	Nm	55

COMMERCIALLY AVAILABLE TOOLS

Number	Designation
WH58.30-Z-1004-20A	Hot-air gun