Remove/check/install front axle brake pads - AR42.10-P-1600RK

MODEL 231.457/465/473 

MODEL 231.474/479 

without CODE B07 (Ceramic brake system) 

Shown on model 231.457 without CODE 950 (AMG sport package) 

Fig 1: Front Axle Brake Pads Remove/Install Components - Shown On Model 231.457 Without Code 950

Courtesy of MERCEDES-BENZ USA

Shown on model 231.457 with CODE 950 (AMG sport package) 

Fig 2: Front Axle Brake Pads Remove/Install Components - Shown On Model 231.457 With Code 950

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
	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
	Remove/install
1	Remove cover above brake fluid expansion reservoir
2	Clean area around cap on expansion reservoir for brake fluid
3	Unscrew the cap on the brake fluid expansion reservoir and suction off some brake fluid	This prevents the expansion reservoir overflowing when the brake piston is pushed back.
4	Detach front complete wheels		AP40.10-P-4050EW
5	Detach electrical connection for front right brake wear sensor (S10/2x1) for front right brake wear sensor (S10/2)
6	Remove bolt (6) and then remove tie rod (7)	Bolt, support to anti-rattle spring	*BA42.10-P-1003-10U
7	Knock out retaining pins (1) using punch and remove retaining spring (2)	Replace retaining pins (1) if necessary. Hammer in retaining pins (1) up to the end stop. Check retaining spring (2) is correctly seated.
8	Pull brake linings (3) out of brake caliper (4) Notes on installation position of brake linings		AH42.10-P-1610-01A
		Do not apply any brake paste or lubricants to brake pads (3) and brake calipers (4). Malfunctions may occur otherwise. Pry out seized brake linings (3) using a lever. Only sets of brake linings (3) approved by Mercedes-Benz may be installed. Make sure that the brake linings (3) are installed at the correct position. Lever	Fig 5
	Check
9	Check brake linings (3) for wear and that they are in good condition	Replace the brake linings (3) if necessary.	AP42.10-P-4253A
10	Check brake disks (5) for wear and condition	MODEL 231.457/465/473/474/479 without CODE B07 (Ceramic brake system) Replace brake disks (5) if they are damaged or worn; see: ↓ Remove/install brake disc	AP42.10-P-4258RK
			AR42.10-P-0220RK
11	Check brake caliper (4) and dust boots of brake piston for leaktightness and damage	Replace brake caliper (4) if necessary; see: ↓ Remove/install front axle brake caliper	AR42.10-P-0070RK
12	Press back brake piston using resetting device	Secure remaining brake pistons to prevent them slipping out. Resetting device	Figure
		Wedge	Fig 3
		If brake pistons are sluggish, replace brake caliper (4); see: ↓ Remove/install front axle brake caliper	AR42.10-P-0070RK
	Clean
13	Clean contact surfaces of brake linings (3) on brake caliper (4)	Do not damage the brake piston dust boots. Do not use sharp-edged or pointed objects. Otherwise the brake caliper (4) must be replaced. Assembly cleaner	*BR00.45-Z-1028-04A
14	Pull right front brake wear sensor (S10/2) out of pad backing plate of brake lining (3)	Only when replacing the brake linings (3) or if the right front brake wear sensor (S10/2) is defective. Replace the defective right front brake wear sensor (S10/2).
15	Install in the reverse order
16	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. Depress brake pedal several times until brake linings (3) lie against brake disks (5)	Before starting the engine, actuate brake pedal several times until pressure is built up and maintained in the brake system. Firm resistance should be noticeable at the brake pedal.	AS42.50-Z-0002-01A
	Check
17	Check fluid level in brake fluid reservoir, and correct if necessary		AP42.10-P-4210V
18	Carry out brake test on the test stand		AP42.00-P-4290BA

Fig 3: Identifying Wedge (601 589 07 63 00)

Courtesy of MERCEDES-BENZ USA

Fig 4: Identifying Resetting Device (000 589 52 43 00)

Courtesy of MERCEDES-BENZ USA

Fig 5: Identifying Lever (123 589 13 33 00)

Courtesy of MERCEDES-BENZ USA