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

MODEL 219 

Shown on 4-piston fixed caliper 

Fig 1: Identifying Front Axle Brake Pads Remove/Install Components - Shown On 4-Piston Fixed Caliper

Courtesy of MERCEDES-BENZ USA

Shown on 8-piston fixed caliper 

Fig 2: Identifying Front Axle Brake Pads Remove/Install Components - Shown On 8-Piston Fixed Caliper

Courtesy of MERCEDES-BENZ USA

Shown on 6-piston fixed caliper 

Fig 3: Identifying Front Axle Brake Pads Remove/Install Components - Shown On 6-Piston Fixed Caliper

Courtesy of MERCEDES-BENZ USA

	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
	Notes on repairs to brake system		AH42.00-P-0003-01A
	Brake fluid notes		AH42.50-P-0001-01A
	Notes on self-locking nuts and bolts		AH00.00-N-0001-01A
1	Unscrew the cap on the brake fluid expansion reservoir and suction off some brake fluid	In order to prevent the expansion reservoir overflowing when pressing back the brake pistons.
			*BA42.50-P-1001-01D
2	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.
3	Remove the front wheels
	Remove/install wheels, rotate if necessary		AP40.10-P-4050TX
4	Separate brake pad contact sensor connector (S10/1x1, S10/2x1)
5	Detach brake pad contact sensor connector (S10/1x1, S10/2x1) from fixed brake caliper (31a)	With 6-piston and 8-piston fixed brake caliper (31a)
			*BA42.10-P-1003-10B
6	Drive out retaining pins (41) using punch and remove retaining springs (31d)	Knock retaining pins (41) all the way in. Pay attention to correct seat of retaining springs (31d).
7	Remove bolt (30) and remove support of retaining spring (33)	With 6-piston fixed brake caliper (31a)
			*BA42.10-P-1004-10B
8	Pull brake pads (43) out of fixed caliper (31a)	With 4-piston fixed brake caliper (31a): In order to avoid damage, insert a wedge between the lever (034) and fixed brake caliper (31a) when pressing out the brake pads (43). 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. Only the brake pads (43) approved by Mercedes-Benz may be built-in as a set. With front axle brake pads (43) with marking (arrow) on the plate (43a) or brake pad (43), this must point in the direction of rotation of the wheel.
			Fig 6
			Fig 5
9	Pull brake pad contact sensor (S10/1, S10/2) out of the pad backing plate of the brake pads (43)	Replace defective contact sensor (S10/1, S10/2).
	Notes on installing brake wear indicator contact sensors		AH42.10-P-0003-01A
	Checking
10	Check brake pad thickness and brake disks	Only 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-4258TX
11	Check fixed brake caliper (31a) for leaktightness and dust boots of brake pistons for damage and correct seating	If necessary:↓
		Install new fixed brake caliper (31a).	AR42.10-P-0070TX
12	Turn back brake piston in pairs using	pusher tool Secure the remaining pairs of brake pistons (31a) beforehand using wedges to prevent them from falling 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 pusher tool on the brake disk but push back the opposite brake pistons simultaneously. If the brake piston is difficult to move: ↓
		Install new fixed brake caliper (31a).	AR42.10-P-0070TX
			Fig 4
			Fig 5
13	Coat brake paste	Except model 219.376/377 Only use the brake paste listed in the linked description and only coat this on the specified points otherwise noise complaints or damage to the brake system may occur	AR42.10-P-0161-01B
		MB brake paste Molykote (copper colored)	*BR00.45-Z-1057-06A
14	Install in the reverse order
15.1	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
15.2	Operate the brake pedal several times until the brake pads (43) contact the brake disks	Vehicles with Adaptive Brake (ABR) Firm resistance should be noticeable at the brake pedal.
16	Check fluid level in brake fluid reservoir, and correct if necessary.
	Brake system - inspect fluid level		AP42.10-P-4210TX
17	Carry out brake test on the test stand		AP42.00-P-4290BA

Fig 4: Identifying Pusher Tool (000 589 52 43 00)

Courtesy of MERCEDES-BENZ USA

Fig 5: Identifying Wedge (601 589 07 63 00)

Courtesy of MERCEDES-BENZ USA

Fig 6: Identifying Lever (123 589 13 33 00)

Courtesy of MERCEDES-BENZ USA