Remove/Install Front Axle Brake Caliper - AR42.10-P-0070LWD

Model 205 

with code U70 (red-painted brake callipers) 

except code B06 (Silver brake calipers) 

except code B07 (AMG - ceramic brake system) 

6-piston fixed-caliper brake 

Model 213 

with code U70 (red-painted brake callipers) 

except code B06 (Silver brake calipers) 

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 

Fig 1: Front Axle Brake Caliper Components Location - Model 213 With Code U70 6-Piston Type

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 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 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
	Notes on handling, transport and storage of composite brake disks		AH42.10-P-9406-12LF
	Remove/install
1	Remove brake pads (3)		AR42.10-P-1610LWD
2	Remove electrical plug connection for front right brakepad wear sensor on brake caliper (1)	When removing brake caliper (1) on right side of vehicle.
		Model 205 with code U70 (red-painted brake callipers) except code B06 (Silver brake calipers) 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 Bolt, brake wear sensor to brake caliper	*BA42.10-P-1002-10W
		Model 213 with code U70 (red-painted brake callipers) except code B06 (Silver brake calipers) except code B07 (AMG - ceramic brake system) 6-piston fixed-caliper brake Bolt, brake wear sensor to brake caliper	*BA42.10-P-1002-10X
3	Remove brake hose (4)		AR42.10-P-0013LW
4	Unscrew bolts (2) and remove brake caliper (1) Notes on threaded connections fastened using a tightening angle-based tightening process		AH00.00-P-0020-01A
		Model 205 with code U70 (red-painted brake callipers) except code B06 (Silver brake calipers) 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 Bolt, brake caliper/brake caliper support to steering knuckle	*BA42.10-P-1001-10W
		Model 213 with code U70 (red-painted brake callipers) except code B06 (Silver brake calipers) except code B07 (AMG - ceramic brake system) 6-piston fixed-caliper brake Bolt, brake caliper/brake caliper support to steering knuckle	*BA42.10-P-1001-10X
	Check
5	Check brake caliper (1) and dust boots of brake piston for leak tightness and damage	If there are problems ↓ Replace brake caliper (1). The new brake caliper (1) is shipped in prefilled condition and it may not be drained. Otherwise the brake caliper (1) cannot be vented.
6	Check brake disk for wear and condition
		Model 205 with code U70 (red-painted brake callipers) except code B06 (Silver brake calipers) 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 (Silver brake calipers) 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 If there are problems ↓ Replace brake disks.	AR42.10-P-0120LWG
		Replace brake disks as a complete set only.	AR42.10-P-0220EWE
7	Install in the reverse order
8	Bleed brake system	Model 205 with code U70 (red-painted brake callipers) except code B06 (Silver brake calipers) 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	AR42.10-P-0010LW
		Model 213 with code U70 (red-painted brake callipers) except code B06 (Silver brake calipers) except code B07 (AMG - ceramic brake system) 6-piston fixed-caliper brake	AR42.10-P-0010LWE
9	Operate the brake pedal several times until brake linings (3) contact the brake disks	Firm resistance should be noticeable at the brake pedal.
	Check
10	Check and correct brake fluid level in expansion reservoir for brake fluid
		Model 205 with code U70 (red-painted brake callipers) except code B06 (Silver brake calipers) 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 (Silver brake calipers) 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
11	Carry out brake test on the test stand
			AP42.00-P-4290BA