Remove/install seat belt with emergency tensioning retractor - AR91.40-P-0630MCU

MODEL 451.3/4 

Shown on model on right side of vehicle up to 30.8.10 

Fig 1: Identifying Seat Belt With Emergency Tensioning Retractor Remove/Install Components - Up To 30.8.10

Courtesy of MERCEDES-BENZ USA

As of 31.8.10, shown at left side of vehicle 

Fig 2: Identifying Seat Belt With Emergency Tensioning Retractor Remove/Install Components - As Of 31.8.10

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Risk of injury  caused by release of spring in the automatic belt retractor.	Never disassemble automatic belt retractors.	AS91.00-Z-0002-01A
	Risk of injury  caused by performing testing or repair work on airbag or emergency tensioning retractor units.	Store airbag units with deployment side facing up; do not expose to temperatures greater than 100 °C. When working on these units, disconnect the power supply.	AS91.00-Z-0001-01A
	Notes on performing repair, body work and welding on vehicles with airbags and ETR units		AH91.00-P-0002-01SM
	Notes on avoiding damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Legal requirements on handling and storing airbags and emergency tensioning retractor units		AH91.00-P-0004-01A
1	Disconnect ground line of battery		AR54.10-P-0003MCC
2	Remove paneling on B-pillar	Model 451.3	AR68.30-P-4700MCU
		Model 451.4	AR68.30-P-4700MCV
3	Disconnect left emergency tensioning retractor squib connector (R12/1x1) or right emergency tensioning retractor squib connector (R12/2x1) and unclip wiring harness (3) from bracket (arrow)	up to 30.8.10
4	Detach belt force limiter electrical connector (6) from driver belt force limiter (R12/27)	As of 31.8.10
5	Detach reel tensioner squib electrical connector (7) from driver reel tensioner squib (R12/32) or front passenger reel tensioner squib (R12/33)	As of 31.8.10
6	Remove bolt (5) from seat belt guide bracket of seat belt (4)	The seat belt guide bracket of the seat belt (4) must be movable when the bolt (5) is screwed on tight.
			*BA91.40-P-1002-01G
7	Remove bolt (2) and remove automatic belt retractor (1) of seat belt (4) upwards	Check automatic belt retractor (1) is correctly seated in guides and slide down.
			*BA91.40-P-1004-01G
8	Remove seat belt (4) with automatic belt retractor (1) from vehicle	If the automatic belt retractor (1) is replaced, the faulty automatic belt retractor (1) must be disposed of properly. See:↓
	Notes on disposing of airbag and emergency tensioning retractor units	OS91.00-P-0001-01A
9	Install in the reverse order
10	Check supplemental restraint system using STAR DIAGNOSIS	When replacing the automatic belt retractor (1).	AD00.00-P-2000-04MCC