Remove/Install Front Axle Brake Caliper - AR42.10-P-0070ME

Model 167 

except code B06 (Silver brake calipers) 

except code B07 (AMG - ceramic brake system) 

except code U29 (AMG high-performance braking system) 

except code U70 (red-painted brake callipers) 

Fig 1: Front Axle Brake Caliper Components Location - Model 167 Except Code B06, B07, U29, U70

Courtesy of MERCEDES-BENZ USA

	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
Notice	Notes on externally invisible brake fluid loss		AH42.10-P-9406-02A
Notice	Notes on handling, transport and storage of composite brake disks		AH42.10-P-9406-12LF
Notice	Notes on installing brake hoses		AH42.10-P-9406-01A
Notice	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
Notice	Brake fluid notes		AH42.50-P-0001-01A
Notice	Notes on repairs to brake system		AH42.00-P-0003-01A
Notice	Notes on self-locking nuts and bolts		AH00.00-P-0001-01KOA
	Note on calculation of tightening torque when using insertion or socket tools with various effective lengths		AH00.00-P-0015-01CW
	Notes on installing brake wear indicator contact sensors		AH42.10-P-0003-01CW
	Notes on safety-relevant components		AH00.00-Z-0019-01A
	Remove
1	Switch off ignition and store transmitter key outside of transmitter range (min. 2 m).
2	Remove cover above brake fluid expansion reservoir.		AR83.10-P-1411ME
3	Clean area around cap on brake fluid expansion reservoir.	Before opening the brake system, the area surrounding the connecting point must be clean. Even the smallest dirt particles, introduced into the hydraulic components, can lead to malfunctions and a total failure of the brake system.
		Assembly cleaner	*BR00.45-Z-1028-04A
4	Unscrew cap of expansion reservoir for brake fluid and suction off some brake fluid using suitable means.
5	Remove front left or right wheel and tire assembly.		AR40.10-P-1102ME
6	Clean area on connecting point between brake line (6) and brake hose (1).	Before opening the brake system, the area surrounding the connecting point must be clean. Even the smallest dirt particles, introduced into the hydraulic components, can lead to malfunctions and a total failure of the brake system.
		Assembly cleaner	*BR00.45-Z-1028-04A
7	Release and disconnect electrical connector (2) of right front brakepad wear sensor (S10/2).	On the right side of the vehicle.
8	Remove screw (3) and place plug housing (4) to one side.	On the right side of the vehicle.
9	Unclip brake hose (6) from holder (9) (arrows).
10	Unscrew screw (7, 8) and secure brake caliper (1) at vehicle free of tension.
11	Unscrew screw (5), detach brake hose (6) and seal openings using suitable stop plugs.	Record plug	Fig 2
12	Remove brakepads.		AR42.10-P-1610ME
	Check
13	Check brakepads for wear and condition.
			AP42.10-P-4252J
		If there is a problem, ↓ replace brake linings.
			AR42.10-P-1610ME
14	Check brake caliper (1) for damage.	If the brake caliper (1) is damaged: ↓ Replace brake caliper (1).
15	Check dust boots on brake piston for damage.	If one or more dust boots are damaged: ↓ Replace appropriate parts.
	Install
16	Install brakepads into brake caliper support.	Brake paste or other lubricants must not be applied to the brakepads.	AR42.10-P-1610ME
17	Remove stop plugs, attach brake hose (6) to brake caliper (1) and tighten screw (5).	Brake hose to brake caliper	*BA42.10-P-1001-04J
		Record plug	Fig 2
18	Tighten brake caliper (1) with screw (7) gently by hand, press brakepads onto brake disk by hand and slide brake caliper (1) onto brake disk.	Ensure that the dust boots of the brake pistons are not damaged. Otherwise, there will be damage to the brake caliper (1) or the brake system will fail. Do not damage electrical line of right front brakepad wear sensor (S10/2). Otherwise, function of the right front brakepad wear sensor (S10/2) is not guaranteed.
19	Tighten screws (7, 8).	Guide pin to brake caliper support	*BA42.10-P-1002-10L
20	Clip brake hose (6) into holder (9) (arrows).
21	Tighten plug housing (4).	On the right side of the vehicle.
		Bolt, brake pad contact sensor to brake caliper	*BA42.10-P-1004-10L
22	Connect electrical connector (2) of right front brakepad wear sensor (S10/2).	On the right side of the vehicle.
		Ensure correct routing of the electrical connector (2) of the right front brakepad wear sensor (S10/2).
23	Install front left or right wheel and tire assembly.		AR40.10-P-1102ME
	Concluding tasks
	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
24	Operate brake pedal several times until the brakepads contact the brake disks.	Firm resistance should be noticeable at the brake pedal.
25	Bleed brake system.		AR42.10-P-0010ME
26	Remove residue from brake fluid with water.
27	Install cover above brake fluid expansion reservoir.		AR83.10-P-1411ME
28	Perform brake test on test stand.
			AP42.00-P-4290BA

Fig 2: Identifying Record Plug (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA