Remove/Check/Install Front Axle Brake Pads - AR42.10-P-1610LWD

Model 205 

with code U70 (red-painted brake callipers) 

except code B06 (grey-painted brake callipers) 

except code B07 (AMG - ceramic brake system) 

6-piston fixed-caliper brake 

Model 213 

with code U70 (red-painted brake callipers) 

except code B06 (grey-painted brake callipers) 

except code B07 (AMG - ceramic brake system) 

6-piston fixed-caliper brake 

Model 253 

with code U70 (AMG high-performance composite braking system) 

except code B06 (AMG high-performance braking system) 

except code B07 (AMG - ceramic brake system) 

6-piston fixed-caliper brake 

Courtesy of MERCEDES-BENZ USA

	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 the engine, actuate brake pedal several times until pressure is built up and maintained in the brake system.	AS42.50-Z-0002-01A
	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 handling, transport and storage of composite brake disks		AH42.10-P-9406-12LF
	Notes on self-locking nuts and bolts		AH00.00-N-0001-01A
	Notes on repairs to brake system		AH42.00-P-0003-01A
	Brake fluid notes		AH42.50-P-0001-01A
	Remove/install
1	Open service flap above expansion reservoir for brake fluid
2	Clean area around cap on expansion reservoir for brake fluid	Assembly cleaner	*BR00.45-Z-1028-04A
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	Remove front wheels		AR40.10-P-1102A
5	Create access to electric line of right front brakepad wear sensor and disconnect electrical connector	Pay attention to the routing of the electric line of the right front brakepad wear sensor.
6	Remove bolt (6) and take off support (7)
7	Use punch to knock out pin (5) and remove retaining spring (8)	: Pound in pins (5) up to end stops. Check retaining spring (8) is correctly seated.
8	Press back brake pistons slightly using pusher tool	Attach pusher tool to the elevations of the brake linings (3). Resetting device	Fig 1
9	Remove brakepads (3)	: Only brakepads (3) approved by Mercedes-Benz may be installed, and only as complete sets. Do not apply brake paste or lubricants to the brake linings (3) and brake calipers (1).
	Check
10	Check pins (5), support (7) and retaining spring (8) for damage and condition	If a problem arises ↓ Replace the pins (5) or support (7) or retaining spring (8).
11	Check brake linings (3) for wear and condition
		Model 253 with code U70 (AMG high-performance composite braking system) except code B06 (AMG high-performance braking system) except code B07 (AMG - ceramic brake system) 6-piston fixed-caliper brake	AP42.10-P-4252D
		Model 205 with code U70 (red-painted brake callipers) except code B06 (grey-painted brake callipers) except code B07 (AMG - ceramic brake system) 6-piston fixed-caliper brake	AP42.10-P-4252CAA
		Model 213 with code U70 (red-painted brake callipers) except code B06 (grey-painted brake callipers) except code B07 (AMG - ceramic brake system) 6-piston fixed-caliper brake In event of damage or excessive wear ↓ Replace brakepads (3). Replace brakepads (3) as a complete set only.	AP42.10-P-4252E
12	Check brake disk for wear and condition
		Model 205 with code U70 (red-painted brake callipers) except code B06 (grey-painted brake callipers) except code B07 (AMG - ceramic brake system) 6-piston fixed-caliper brake	AP42.10-P-4258EW
		Model 213 with code U70 (red-painted brake callipers) except code B06 (grey-painted brake callipers) except code B07 (AMG - ceramic brake system) 6-piston fixed-caliper brake Model 253 with code U70 (AMG high-performance composite braking system) except code B06 (AMG high-performance braking system) except code B07 (AMG - ceramic brake system) 6-piston fixed-caliper brake In event of damage or excessive wear ↓ Replace brake disks.	AR42.10-P-0120LWG
			AR42.10-P-0220EWE
		Replace brake disks as a complete set only
13	Check brake caliper (1) and dust boots of brake piston for leak tightness and damage	If a problem arises ↓ Replace brake caliper (1).	AR42.10-P-0070LWD
14	Press back brake pistons using pusher tool	Secure remaining brake pistons using two wedges against slipping out.
		Resetting device	Fig 1
		Wedge	Fig 2
		With sluggish brake pistons ↓ Replace brake caliper (1).	AR42.10-P-0070LWD
	Clean
15	Clean contact surfaces of brake linings (3) on brake caliper (1) and brake piston	Do not use sharp-edged or pointed objects. The brake caliper (1) or the dust boots of the brake pistons can otherwise be damaged. Assembly cleaner	*BR00.45-Z-1028-04A
16	Pull front right brakepad wear sensor out of backing plate of brakepad (3)	When replacing the brakepads (3) or replacing the right front brake wear sensor Observe installation position of front right brakepad wear sensor.
17	Install in the reverse order
18	Operate the brake pedal several times until brake linings (3) contact the brake disks	Firm resistance should be noticeable at the brake pedal.
	Check
19	Check/correct brake fluid level in expansion reservoir
		Model 205 with code U70 (red-painted brake callipers) except code B06 (grey-painted brake callipers) except code B07 (AMG - ceramic brake system) 6-piston fixed-caliper brake	AP42.10-P-4210CAA
		Model 213 with code U70 (red-painted brake callipers) except code B06 (grey-painted brake callipers) except code B07 (AMG - ceramic brake system) 6-piston fixed-caliper brake Model 253 with code U70 (AMG high-performance composite braking system) except code B06 (AMG high-performance braking system) except code B07 (AMG - ceramic brake system) 6-piston fixed-caliper brake	AP42.10-P-4210B
20	Carry out brake test on the test stand
			AP42.00-P-4290BA

Number	Designation	Order number
BR00.45-Z-1028-04A	Assembly cleaner	Adolf Wurth GmbH & Co. KG