Removing, checking and installing rear axle brake pads - AR42.10-P-1700R

MODEL 211.004/006/007/008/016/020/022/023/024/026/028/029/041/042/052/054/056/057/061/065/070/072/080/082/083/084/087/089/090/092/206/207/208/216/220/222/223/226/241/242/252/254/256/257/261/265/270/272/280/282/283/284/287/289/290/292/606/608/616/620 

MODEL 230.456/467/471/475 

Fig 1: Removing/Installing Rear Axle Brake Pads

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	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 rear wheels
	Remove/install wheels, rotate if necessary		AP40.10-P-4050Z
4	Remove brake pad contact sensor (S10/4)	Installation:  Replace defective contact sensor (S10/4).
	Notes on installing brake pad wear sensor contact sensors		AH42.10-P-0003-01A
5	Detach clip (31h)
6	Remove protective caps (31k)
7	Remove guide pin (31c)	Model 211	*BA42.10-P-1003-12H
		Model 230	*BA42.10-P-1003-12B
8	Remove floating brake caliper (31) with inner brake pad (31g)	Fasten floating brake caliper (31) to the vehicle free from stress. Do not kink or tension brake hose, as otherwise it will be damaged.
9	Remove brake pads (31g)	Brake pads (31g) 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. Installation:  Only the brake pads (31g) approved by Mercedes-Benz may be built-in as a set. Insert inner brake pad (31g) with riveted-on spring in brake piston, insert outer brake pad (31g) in brake caliper support (31n).
	Checking
10	Check brake pad thickness and brake disks	Only replace brake pads (31g) 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
11	Check floating brake caliper (31) for leaks and dust boot (31m) for damage and correct seat	If floating brake caliper (31) is leaky or dust boot (31m) is damaged or not seated correctly: ↓
		Replace floating brake caliper (31).	AR42.10-P-0080R
12	Push back brake piston using pusher tool (01)	If brake pads (31g) have been removed from several brake calipers, secure their brake pistons beforehand with wedges to prevent them from falling out . If brake pistons are sluggish: ↓
		Replace floating brake caliper (31).	AR42.10-P-0080R
			*000589524300
			*601589076300
	Clean
13	Clean contact surfaces of brake pads (31g) at floating caliper (31) and at brake caliper support (31n)	Do not use any sharp-edged or pointed tools to prevent damage.
14	Coat brake paste	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 Plastilube brake paste (brownish)	*BR00.45-Z-1084-06A
15	Install in the reverse order
16.1	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
16.2	Operate the brake pedal several times until the brake pads (31g) contact the brake disks	Vehicles with Adaptive Brake (ABR) Firm resistance should be noticeable at the brake pedal.
17	Check fluid level in brake fluid reservoir, and correct if necessary.
	Brake system - inspect fluid level		AP42.10-P-4210Z

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

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

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

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.