Remove/install rear axle brake caliper - AR42.10-P-0080EL

MODEL 218 (except 218.374/375/376/392/974/975/976/992)

Fig 1: Identifying Rear Axle Brake Caliper Remove/Install Components (1 Of 2)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Rear Axle Brake Caliper Remove/Install Components (2 Of 2)

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Risk of injury . Skin or eye injuries may result when handling hot or glowing objects.	Wear protective gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A
	Risk of poisoning from swallowing brake fluid. Risk of injury from skin and eye contact with brake fluid	Only pour brake fluid into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid.	AS42.50-Z-0001-01A
	Notes on self-locking nuts and bolts		AH00.00-N-0001-01A
	Brake fluid notes		AH42.50-P-0001-01A
	Notes on repairs to brake system		AH42.00-P-0003-01A
	Notes on installing brake wear indicator contact sensors		AH42.10-P-0003-01CW
1	Clean area around cap on expansion reservoir for brake fluid
2	Unscrew the cap on the brake fluid expansion reservoir and suction off some brake fluid	In order to prevent the brake fluid from overflowing at the expansion reservoir when the brake pistons are pushed back.
3	Remove rear wheels
			AP40.10-P-4050EW
4	Detach spring (1) from brake caliper (2)
5	Disconnect right rear brake wear sensor electrical connector (S10/4x1) from right rear brake wear sensor (S10/4)	The right rear brake wear sensor (S10/4) is only fitted on the right side of the vehicle.
6	Pry off and remove protective caps (3) from boots (4)
7	Unscrew both guide pins in boots (4)	Guide pin to brake caliper support	*BA42.10-P-1004-12J
8	Remove brake caliper (2) from brake caliper support (8)	Do not tension or kink brake hose (7). To relieve the load on the brake hose (7), fasten the brake caliper (2) to the vehicle free of tension. Otherwise, the brake hose (7) will be damaged.
9	Press back brake piston using pusher tool (01)	When reusing the brake caliper (2). If the brake piston does not move easily, the brake caliper (2) must be replaced.
9	Press back brake piston using pusher tool (01)	Resetting device	Fig 3
10	Unscrew bolt (14) and remove plug contact of right rear brake wear sensor electrical connector (S10/4x1) from brake caliper (2)	Only when replacing the brake caliper (2). The plug contact is only fitted on the right side of the vehicle.
10		Screw/bolt, brake wear sensor to brake caliper	*BA42.10-P-1003-12J
11	Detach brake hose (7) from brake caliper (2)	Only when replacing the brake caliper (2).
		Replace brake hoses Seal connections immediately. To avoid damage through escaping brake fluid.	AR42.10-P-0013EW
		Record plug	Figure
	Check
12	Check brake caliper (2) and dust boot (10) on brake piston for damage	If damaged, replace brake caliper (2).
13	Check boots (4) on brake caliper (2) for damage	If damaged, replace the boots (4).
	Clean
14	Clean contact surfaces of brake pads (6) on brake caliper (2) and on brake caliper support (8) using a rag	Do not damage dust boot (10) on the brake piston. The brake caliper (2) can be damaged due to infiltrating dirt.
14		Assembly cleaner	*BR00.45-Z-1028-04A
15	Install in the reverse order
	Risk of accident when commissioning the vehicle due to a lack of braking effect when the service brake is operated for the first time after repair work.	Before starting the engine, actuate brake pedal several times until pressure is built up and maintained in the brake system.	AS42.50-Z-0002-01A
16	Depress brake pedal several times until brake pads (6) rest against brake disks (9)	Firm resistance should be noticeable at the brake pedal.
17	Check fluid level in brake fluid reservoir, and correct if necessary
			AP42.10-P-4210EW
18	Check function and effectiveness of brake system
			AP42.00-P-4290BA