Remove/install C-pillar upper section at Vario roof - AR77.50-P-6760W

MODEL 172.4 

Shown on right 

C-pillar top section (1) 

Fig 1: Identifying C-Pillar Upper Section At Vario Roof Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Risk of injury  caused by body parts being trapped  or crushed  when working on a partially open Vario roof (in stop mode) or in its closing area as a result of the Vario roof suddenly collapsing	Secure Vario roof with a suitable special tool.	AS77.50-Z-0001-01A
1	Move Vario roof to intermediate position with Vario roof operating switch and secure		AR77.50-P-3000-01W
		Support	Figure
2	Unclip cover (2) from C-pillar top section (1)	Clip remover	Figure
3	Unclip line bracket (3)	Clip remover	Figure
4	Separate water drain hose (4) (arrow)
5	Unscrew bolt (5), leave threaded bushing (6) inserted.	Press bolt (5) toward center of vehicle when screwing out. Otherwise, the bolt (5) can damage the side seal on the Vario roof front section.
		Screwdriver bit	Figure
6	Unscrew nuts (7), leave bolts (8) inserted.
7	Unscrew bolt (9)	Apply thread locking agent.
		Quick-acting adhesive, Loctite 270	*BR00.45-Z-1008-02A
8	Pull out threaded bushing (6)
9	Remove bolts (8)	Apply thread locking agent.
		Quick-acting adhesive, Loctite 270	*BR00.45-Z-1008-02A
10	Install in the reverse order	When replacing C-pillar top section (1): ↓
		Replace inner C-pillar seal	AR77.50-P-6768W
		Replace outer C-pillar seal	AR77.50-P-6766W
11	Check position of rear window, adjust if necessary		AR67.20-P-3002W

Fig 2: Identifying Screwdriver Bit (126 589 00 10 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Support (230 589 04 63 00)

Courtesy of MERCEDES-BENZ USA

Fig 4: Identifying Snap-Release Tool (452 589 01 63 00)

Courtesy of MERCEDES-BENZ USA

REPAIR MATERIALS

Number	Designation	Order number
BR00.45-Z-1008-02A	Quick-acting adhesive, Loctite 270	A 002 989 93 71