Remove/Check/Install Front Axle Brake Pads - AR42.10-P-1600LF

Model 217 except code B07 (AMG - ceramic brake system)

Model 222 except code B07 (AMG - ceramic brake system) except code Z07 (B7 armoring on special protection version)

Shown on model 222 without tie bar - brake caliper (4) at right

Courtesy of MERCEDES-BENZ USA

Shown on model 222 with tie bar - brake caliper (4) at right

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 injury caused by scraping or cutting body parts on sharp vehicle parts	Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. Deburr repair panels.	AS00.00-Z-0017-01A
	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	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
Notice	Notes on repairs to brake system		AH42.00-P-0003-01A
Notice	Brake fluid notes		AH42.50-P-0001-01A
Notice	Notes on self-locking nuts and bolts		AH00.00-P-0001-01KOA
	Notes on repair work on suspension components		AH00.00-P-0100-01A
	Notes on installation position of brake linings	Model 222 except code B07 (AMG - ceramic brake system) except code Z07 (B7 armoring on special protection version)	AH42.10-P-1610-01A
	Notes on installing brake wear indicator contact sensors		AH42.10-P-0003-01CW
	Remove/install
1	Switch off ignition and store transmitter key outside of transmitter range (min. 2 m).
2	Remove cover above brake fluid expansion reservoir.
3	Clean area around cap on brake fluid expansion reservoir.	Assembly cleaner	*BR00.45-Z-1028-04A
4	Unscrew cap on brake fluid expansion reservoir and suction off some brake fluid.	This prevents the expansion reservoir overflowing when the brake piston is pushed back.
5	Remove corresponding wheel and tire assembly.		AR40.10-P-1102A
6	Disconnect right front brake wear sensor electrical connector (S10/2x1) for right front brake wear sensor (S10/2).	If the brakepads (3) on the right side of the vehicle are removed.
7	Remove screw (6) and remove tie bar (7).	If a tie bar (7) is present. Model 217.364/382/384/385/482 except code B07 (AMG - ceramic brake system) Model 217.377/378/379/477/479 except code B07 (AMG - ceramic brake system) Model 222.004/032/033/057/104/123/132/133/157 with code 950 (AMG sport package) except code B07 (AMG - ceramic brake system) except code Z07 (B7 armoring on special protection version) Model 222.004/032/033/057/104/123/132/133/157 with code 951 (Sports package USA) except code B07 (AMG - ceramic brake system) except code Z07 (B7 armoring on special protection version) Model 222.067/082/085/163/165/167/967 except code B07 (AMG - ceramic brake system) except code Z07 (B7 armoring on special protection version) Model 222.077 except code B07 (AMG - ceramic brake system) except code Z07 (B7 armoring on special protection version) Model 222.176/182/184/185/976/982/984/985 except code B07 (AMG - ceramic brake system) except code Z07 (B7 armoring on special protection version) Model 222.177/178/179 except code B07 (AMG - ceramic brake system) except code Z07 (B7 armoring on special protection version) Tension rod of brake caliper	*BA42.10-P-1003-10V
8	Knock out retaining pins (1) using punch and remove retaining spring (2).	Drive in retaining pins (1) up to the end stop. Check retaining spring (2) is correctly seated.
9	Pull brakepads (3) out of brake caliper (4).	Do not apply brake paste or lubricants to the brakepads (3) and brake calipers (4). Malfunctions may occur otherwise. Pry out seized brake linings (3) using a lever. Only install brakepads (3) approved by Mercedes-Benz as a set. Make sure that the brakepads (3) are installed at the correct position. Lever	Fig 1
	Check
10	Check brakepads (3).
		Model 217 except code B07 (AMG - ceramic brake system)	AP42.10-P-4252C
		Model 222 except code B07 (AMG - ceramic brake system) except code Z07 (B7 armoring on special protection version)	AP42.10-P-4252HA
		If wear or damage is detected, ↓ Replace brakepads (3).
11	Check brake disks (5).
		Model 217 except code B07 (AMG - ceramic brake system)	AP42.10-P-4258C
		Model 222 except code B07 (AMG - ceramic brake system) except code Z07 (B7 armoring on special protection version)	AP42.10-P-4258HA
		If wear or damage is detected, ↓ replace brake disks (5).	AR42.10-P-0220LF
12	Check brake caliper (4) and dust boots of brake pistons.	If a leakage or any damage is detected, ↓ Replace brake caliper (4).	AR42.10-P-0070LF
13	Press back brake piston using pusher tool.	Secure remaining brake pistons to prevent them slipping out.
		Resetting device	Fig 2
		Wedge	Fig 3
		If one or more brake pistons are sluggish. ↓ Replace brake caliper (4).
			AR42.10-P-0070LF
	Clean
14	Clean contact surfaces of brakepads (3) at brake caliper (4).	Do not use sharp-edged or pointed objects. Otherwise damage will occur to the dust boots Assembly cleaner	*BR00.45-Z-1028-04A
15	Pull right front brake wear sensor (S10/2) out of backing plate of brakepad (3).	If the brakepads (3) are replaced or the right front brake wear sensor (S10/2) is replaced. Replace the defective right front brake wear sensor (S10/2).
16	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
17	Depress brake pedal several times until the brakepads (3) lie against the brake disks (5).	Firm resistance should be noticeable at the brake pedal.
	Check
18	Check fluid level in expansion reservoir for brake fluid.
			AP42.10-P-4210HA
19	Perform brake test on test stand.
			AP42.00-P-4290BA