Remove/install brake pads on fixed caliper - AR42.10-P-0161I

MODEL 215, 220 

Front axle 

Fig 1: Identifying Brake Pads On Fixed Caliper Remove/Install Components (Front Axle)

Fig 2: Identifying Brake Pads On Fixed Caliper Remove/Install Components (Rear Axle)

Rear axle 

	Remove/install
	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
	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.
2	Remove wheels
	Remove/install wheels		AP40.10-P-4050Z
	Checking
3	Check brake lining thickness and brake disks	Replace brake pads (43) and brake disks in complete sets if necessary.
	Inspect condition of brake disks		AP42.10-P-4258I
	Check brake lining thickness	If the brake pads (43) have worn down to beyond the wear limit, the bar between the sealing groove and dust cap may be damaged; therefore: ↓	AP42.10-P-4253A
		Check brake system for leaks with pressure tester.	AR42.10-P-0015I
4	Check brake calipers (31a, 31b) for leaks and dust boots for damage	If the brake calipers (31a, 31b) are leaky or the dust boots damaged: ↓
		Replace brake caliper on front axle.	AR42.10-P-0070I
		Install new brake caliper at rear axle.	AR42.10-P-0080I
5	Remove brake pad contact sensors
	Notes on installing brake wear indicator contact sensors		AH42.10-P-0003-01A
6	Knock out retaining pins (41) with punch (035)	Installation:  Knock retaining pins (41) all the way in.
7	Pull brake pads (43) out of brake calipers (31a, 31b)	Press out brake pads (43) using lever (034) if they are stuck. Insert wedge between lever (034) and brake caliper (31a, 31b) to prevent damage. Installation:  Install front axle brake pads (43) with panel (43a) dry. 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.
			Fig 4
			Fig 5
8	Press back brake piston using pusher tool (031)	On 4-piston fixed brake calipers, secure one pair of opposing pistons with wedges to prevent them from slipping out. Then push back other piston pair using pusher tool (031).
			Fig 4
			Figure
		If the piston is difficult to move: ↓
		Replace brake caliper on front axle.	AR42.10-P-0070I
		Install new brake caliper at rear axle.	AR42.10-P-0080I
	Clean
9	Clean brake pad guides	Do not use any sharp-edged or pointed tools to prevent damage.
10	If necessary, clean the perforation of brake disks		AR42.10-P-2260-01I
11	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 engine, actuate brake pedal several times until the pressure is built up and maintained in the brake system.	AS42.50-Z-0002-01A
12	Operate the brake pedal several times until the brake pads (43) contact the brake disks	A firm resistance must be noticeable at the brake pedal.
	Checking
13	Check brake fluid level, correct if necessary
	Brake system - inspect fluid level	Vehicles with top protection	AP42.10-P-4210M
		Vehicles without code Z07 Top protection	AP42.10-P-4210Z

Fig 3: Identifying Pusher Tool (000 589 52 43 00)

Fig 4: Identifying Wedge (601 589 07 63 00)

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