Remove/Install Rear-Axle Brake Caliper - AR42.10-P-0080LW

Model 205 

Model 213 

Model 253 

Model 293 

Courtesy of MERCEDES-BENZ USA

Shown on model 205.040 with code 489 (AIRmatic) on right side of vehicle 

Courtesy of MERCEDES-BENZ USA

	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
	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 handling, transport and storage of composite brake disks		AH42.10-P-9406-12LF
	Notes on handling, transport and storage of ceramic brake disks		AH42.10-P-9406-13A
	Notes on threaded connections fastened using a tightening angle-based tightening process		AH00.00-P-0020-01A
	Brake fluid notes		AH42.50-P-0001-01A
	Notes on self-locking nuts and bolts		AH00.00-N-0001-01A
	Notes on repairs to brake system		AH42.00-P-0003-01A
	Notes on safety-relevant components		AH00.00-Z-0019-01A
	Remove/install
1	Remove cover over brake fluid expansion reservoir.
2	Clean area around cap of brake fluid expansion reservoir.	Assembly cleaner	*BR00.45-Z-1028-04A
3	Remove cap from brake fluid expansion reservoir and extract some brake fluid.	Collect escaping brake fluid using a suitable cloth.
4	Move brake pads (13) to assembly position.	Model 205 as of model year 2019 Model 213, 293 Model 253 as of model year 2020	AR42.10-P-1710-01LWE
		Model 205 up to model year 2019 Model 253 up to model year 2020 Do not operate the service brake while "Move to assembly position" is shown. Otherwise the spindle in the brake caliper (1) will be damaged. The hood must be closed.	AR42.10-P-1700-02W
5	Switch off ignition and store transmitter key outside of transmission range (min. 2 m).
6	Remove corresponding rear wheel.		AR40.10-P-1102A
7	Remove dust caps (arrows A).	Model 205 (except 205.086/087/286/287/386/387/486/487) Model 253 (except 253.388/389/988/989)
8	Remove spring (7) from brake caliper (1).	Model 205 (except 205.086/087/286/287/386/387/486/487) Model 253 (except 253.388/389/988/989)
9	Unhook electric line (8) from holder (arrow C).	Model 205, 213, 253
10	Unhook electric line (8) from cover of left electric parking brake actuator motor (M76/1) or the cover of the right electric parking brake actuator motor (M76/2).	Model 205, 213, 253
11	Unhook electric line (9) from holder (arrow C).	Model 205, 213 with code 489 (AIRMATIC) Model 253 with code 489 (AIR BODY CONTROL)
12	Unhook electric line (9) from cover of left electric parking brake actuator motor (M76/1) or the cover of the right electric parking brake actuator motor (M76/2).	Model 205, 213 with code 489 (AIRMATIC) Model 253 with code 489 (AIR BODY CONTROL)
13	Unhook grommet (11) from holder (arrow B).
14	Detach electrical plug (2) from brake pad wear sensor coupling housing (4).	When removing brake caliper (1) on right side of vehicle.
15	Remove bolt (3) from brake pad wear sensor coupling housing (4).	When removing brake caliper (1) on right side of vehicle.
16	Release and disconnect electrical connector (10) from left electric parking brake actuator motor (M76/1) or right electric parking brake actuator motor (M76/2).
17.1	Unscrew bolt (6) from brake hose (5) and let brake hose (5) hang down to one side.	Model 205 (except 205.086/087/286/287/386/387/486/487) Model 213 (except 213.088/089/288/289) Model 253 (except 253.388/389/988/989) Model 293 Seal openings on brake caliper (1) and brake hose (5) immediately. Otherwise adjacent components will be damaged by escaping brake fluid and the brake caliper (1) cannot be bled. : The new brake caliper (1) comes in prefilled condition and it must not be drained. Otherwise the brake caliper (1) cannot be vented.
		Model 205 (except 205.086/087/286/287/386/387/486/487) Model 253 (except 253.388/389/988/989) Brake hose to brake caliper	*BA42.10-P-1002-04O
		Model 213 (except 213.088/089/288/289) except code B07 (Ceramic brake system) Model 293 Brake hose to brake caliper	BA42.10-P-1002-04P
		Record plug	Fig 1
17.2	Remove brake hose (5).	Model 205.086/087/286/287/386/387/486/487 Model 213.088/089/288/289 Model 253.388/389/988/989	AR42.10-P-0013LW
18.1	Remove guide pins (12).	Model 205 (except 205.086/087/286/287/386/387/486/487) Model 213 (except 213.088/089/288/289) Model 253 (except 253.388/389/988/989)
		Model 205 (except 205.086/087/286/287/386/387/486/487) Model 253 (except 253.388/389/988/989) Guide pin to brake caliper support or bolt for guide pin to brake caliper	*BA42.10-P-1003-12V
		Model 213 (except 213.088/089/288/289) Guide pin to brake caliper support or bolt for guide pin to brake caliper	BA42.10-P-1003-12W
18.2	Remove bolts from guide pins (12).	Model 205.086/087/286/287/386/387/486/487 Model 213.088/089/288/289 Model 253.388/389/988/989 Model 293 Model 205.086/087/286/287/386/387/486/487 Model 253.388/389/988/989 Model 293 Guide pin to brake caliper support or bolt for guide pin to brake caliper	*BA42.10-P-1003-12V
		Model 213.088/089/288/289 Guide pin to brake caliper support or bolt for guide pin to brake caliper	BA42.10-P-1003-12W
19	Remove brake caliper (1) from brake caliper support (14).
20	Remove left electric parking brake actuator motor (M76/1) or right electric parking brake actuator motor (M76/2) from brake caliper (1).	When replacing the brake caliper (1).	AR42.20-P-0600LW
21	Remove brake pads (13) from brake caliper support (14).	When replacing brake caliper support (14).
22	Unscrew bolts of brake caliper support (14) and remove brake caliper support (14).	When replacing brake caliper support (14).
		Model 205, 253, 293 Bolt, brake caliper/brake caliper support to wheel carrier	*BA42.10-P-1001-12V
		Model 213 Bolt, brake caliper/brake caliper support to wheel carrier	BA42.10-P-1001-12W
	Check
23	Check brake caliper (1) and dust boot on brake piston for leak tightness and damage.	In the event of a problem, ↓ replace brake caliper (1).
24.1	Check guide pins (12) for ease of movement.	Model 205 (except 205.086/087/286/287/386/387/486/487) Model 213 (except 213.088/089/288/289) Model 253 (except 253.388/389/988/989) In the event of a problem, ↓ replace brake caliper (1).
24.2	Check boots and guide pins (12) at brake caliper support (14) for damage and ease of movement.	Model 205.086/087/286/287/386/387/486/487 Model 213.088/089/288/289 Model 253.388/389/988/989 Model 293 In the event of a problem, ↓ replace brake caliper support (14).
25	Check brake pads (13) for wear and condition.
		Model 293	AP42.10-P-4252EQ
		Model 205	AP42.10-P-4252CAA
		Model 253	AP42.10-P-4252D
		Model 213	AP42.10-P-4252E
		In the event of a problem, ↓ replace brake pads (13).	AR42.10-P-1710LW
26	Check brake disk (15) for wear and condition.
		Model 205	AP42.10-P-4256EW
		Model 213, 253, 293 In the event of a problem, ↓ replace brake disks (15).	AR42.10-P-0120LWG
		Model 293	AR42.10-P-0240EQ
		Model 205 Model 213 Model 253 Replace brake disks (15) as a complete set only.	AR42.10-P-0220EWE
27	Check brake hose (5) for damage.	In the event of a problem, ↓ Replace brake hose (5).	AR42.10-P-0013LW
28	Install in the reverse order.
29	Bleed brake system.	Model 205, 253, 293	AR42.10-P-0010LW
		Model 213	AR42.10-P-0010LWE
30	Operate brake pedal several times until brake pads (13) make contact with brake disks (15).	Firm resistance should be noticeable at the brake pedal.
	Check
31	Check and correct brake fluid level in expansion reservoir.
		Model 205	AP42.10-P-4210CAA
		Model 213, 253	AP42.10-P-4210B
		Model 293	AP42.10-P-4210F
32	Perform brake test on test stand.
			AP42.00-P-4290BA

Fig 1: Identifying Record Plug (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA