Remove/install front axle brake caliper - AR42.10-P-0070MCU

MODEL 451.3/4 

Shown on left side of vehicle 

Fig 1: Identifying Front Axle Brake Caliper Remove/Install Components - Shown On Left Side Of Vehicle

Courtesy of MERCEDES-BENZ USA

	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
	Brake fluid notes		AH42.50-P-0001-01A
	Notes on repairs to brake system		AH42.00-P-0003-01A
		Although replacement of the brake caliper (1) as a pair is not specified by Daimler, it is recommended
1	Remove brake pads on the left or right brake caliper (1)		AR42.10-P-1600MCU
2	Check bolted connection of brake line (2) with brake hose (3) for color coding	: Identify the brake line (2) accordingly.	AR42.10-P-0013-05MCC
3	Loosen bolted connection of brake line (2) with brake hose (3), separate, remove retaining clip and unhook brake hose (3)	Collect brake fluid in a suitable container. Seal connections using suitable plugs. The brake hose (3) must be clear at every steering angle and wheel compression position, and it must not be mounted when twisted, as otherwise the brake hose (3) may be damaged.	*BA42.10-P-1002-04E
		Box wrench bit	Figure
4	Unscrew brake hose (3) from brake caliper (1)	When replacing the brake caliper (1). Collect brake fluid in a suitable container. Seal connections using suitable plugs.	*BA42.10-P-1001-04E
5	Unscrew bolt (4)	Replace self-locking bolt (4).	*BA42.10-P-1001-10A
6	Remove brake caliper (1)
7	Replace brake line (2).	Only if the brake line (2) with the red color coding has been detached. Remove/install left front brake line	AR42.10-P-0032MCU
		Remove/install right front brake line	AR42.10-P-0033MCU
8	Install in the reverse order
9	Bleed brake system		AR42.10-P-0010MCU

BRAKE LINES, BRAKE HOSES

Number	Designation		Model 451.3/4
BA42.10-P-1001-04E	Brake hose to front floating caliper	Nm	18
BA42.10-P-1002-04E	Brake pipe to brake hose	Nm	16

FRONT AXLE FLOATING CALIPER

Number	Designation		Model 451.3/4
BA42.10-P-1001-10A	Bolt, brake caliper to brake caliper support	Nm	30

Fig 2: Identifying Box Wrench Bit (450 589 09 99 04)

Courtesy of MERCEDES-BENZ USA