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

MODEL 211.026 up to 31.8.03, 211.028 /029 /054 /056, 211.065 up to 31.8.03, 211.070 /072 /223 /226 /254 /256 /265 /270 /272 /616 /620 

MODEL 211.041 /241 with CODE (950) EVOLUTION AMG sport package with CODE (952) Sport package 

MODEL 230.456 /467 /471 /475 

Fig 1: Identifying Front Axle Brake Pads Components

	Remove/install
	Risk of injury  caused by body parts being jammed or crushed. Risk of injury  to skin and eyes caused by brake fluid spraying out at high pressure when working on the SBC brake system	Deactivate SBC brake system using STAR DIAGNOSIS.	AS42.46-Z-0001-01A
	Risk of poisoning  caused by swallowing brake fluid. Risk of injury  caused by brake fluid coming into contact with skin and eyes	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
	Risk of injury  to skin and eyes caused by handling hot or glowing objects.	Wear safety gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A
	Brake fluid notes		AH42.50-P-0001-01A
	Notes on repairs to brake system		AH42.00-P-0003-01A
1	Deactivate SBC brake system using STAR DIAGNOSIS.	Vehicles with Sensotronic Brake Control (SBC)
		The following steps should be run through in STAR DIAGNOSIS:
		Select menu item "SBC-Sensotronic Brake Control"/"Deactivate 'SBC' system".
		Then process all the individual steps from top to bottom.
2	Lower brake fluid level in brake fluid reservoir down to "MIN" mark.	In order to prevent the expansion reservoir overflowing when pressing back the brake pistons.
			*BA42.50-P-1001-01D
3	Remove the front wheels
	Remove/install wheels		AP40.10-P-4050Z
4	Detach connector for brake pad contact sensor (S10/1x1, S10/2x1)
5	Knock out retaining pins (41) with a punch (035)	Installation:  Knock retaining pins (41) all the way in.
6	Remove retaining spring (31d)
7	Pull brake pads (43) out of fixed caliper (31a)	Use lever (034) if brake pads (43) are stuck. When pushing out the brake pads (43) insert a wedge between the lever (034) and fixed brake caliper (31a) .
			Fig 3
			Fig 4
		Installation:  Do not use any sharp-edged or pointed tools for cleaning the brake pad guides. Install brake pads (43) using ungreased plate (43a). The marking (see arrow) on the panel (43a) must point in the direction of rotation of the wheel during forward travel.
		Only complete sets of brake pads (43) approved by Mercedes-Benz may be installed.
		Brake pads (43) are to be disposed of as special waste. The local authorities can provide information regarding whether disposal is also permitted as industrial waste similar to domestic waste.
8	Pull brake pad contact sensor (S10/1, S10/2) out of the pad backing plate of the brake pad (43)	Installation:  Replace defective contact sensors (S10/1, S10/2).
	Notes on installing brake pad wear sensor contact sensors		AH42.10-P-0003-01A
	Checking
9	Check brake lining thickness and brake disks	Replace brake pads (43) and brake disks in complete sets if necessary.
	Check brake lining thickness		AP42.10-P-4253A
	Inspect condition of brake disks		AP42.10-P-4258R
10	Check fixed caliper (31a) for leaktightness and dust boots for signs of damage and correct seating	If fixed caliper (31a) is leaky or dust boot is damaged or not seated correctly: ↓
		Install new fixed brake caliper (31a).	AR42.10-P-0070R
11	Press back brake piston using pusher tool (031)	Beforehand secure a pair of opposing brake pistons using wedges against being pushed out. If the brake pads (43) of several brake calipers are removed, their brake pistons must also be secured to prevent them from falling out.
		Do not fit the pusher tool (031) to the brake disk, but rather push back the opposite brake pistons simultaneously. If the brake piston is difficult to move: ↓
		Install new fixed brake caliper (31a).	AR42.10-P-0070R
			Fig 2
			Fig 3
	Clean
12	If necessary, clean the perforation of brake disks		AR42.10-P-2260-01I
13	Install in the reverse order
14.1	Activate SBC brake system using STAR DIAGNOSIS	Vehicles with Sensotronic Brake Control (SBC) The following steps should be run through in STAR DIAGNOSIS:
		Select the menu item "SBC-Sensotronic Brake Control"/"Initial startup after repair"/"Remove/install brake pads".
		Then process all the individual steps from top to bottom.
	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 engine, actuate brake pedal several times until the pressure is built up and maintained in the brake system.	AS42.50-Z-0002-01A
14.2	Operate the brake pedal several times until the brake pads (43) contact the brake disks	Vehicles with Adaptive Brake (ABR)
		A firm resistance must be noticeable at the brake pedal.
	Checking
15	Check brake fluid level, correct if necessary
	Brake system - inspect fluid level		AP42.10-P-4210Z

BRAKE SYSTEM HYDRAULICS

Fig 2: Identifying Pusher Tool (000 589 52 43 00)

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

Fig 4: Identifying Lever (123 589 13 33 00)