Replace brake hoses - AR42.10-P-0013RT

MODEL 251 

Fig 1: Identifying Front Axle Brake Hose Components - Shown On Vehicle With Airmatic

Courtesy of MERCEDES-BENZ USA

Front axle brake hose 

Shown on vehicle with AIRmatic (air suspension with level adjustment and adaptive damping system ADS), code 489 

Fig 2: Identifying Rear Axle Brake Hose Components

Courtesy of MERCEDES-BENZ USA

Rear axle brake hose 

	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 safety glasses when handling brake fluid.	AS42.50-Z-0001-01A
	Risk of death  caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer.	AS00.00-Z-0010-01A
	Brake fluid notes	All models	AH42.50-P-0001-01A
	Notes on repairs to brake system	All models	AH42.00-P-0003-01A
	Notes on installing brake hoses		AH42.10-P-9406-01RT
1	Lift/jack up vehicle		AR00.60-P-1000RT
2	Remove wheels		AP40.10-P-4050RT
3	Clean the area around the brake line (1) and brake hose (2) in the area of the separation points	Before opening the brake system the area around the separation point should be cleaned thoroughly. Even the smallest particles of dirt, introduced into the hydraulic components, can lead to malfunctions and a total failure of the SBC system.
		Cleaner from package	*BR00.45-Z-1028-04A
4	Unscrew brake line (1) from brake hose (2)	Seal brake line immediately with stop plugs. The reservoir must not run empty otherwise air gets into the system. When detaching or tightening the brake line (1) on the brake hose (2), take care not to twist the bracket (3). Therefore counterhold with an open end wrench on the two flats of the brake hose (2).
			*BA42.10-P-1002-14A
		Box wrench bit	Fig 3
		Set of stop plugs	Fig 5
5	Unbolt brake hose (2) from floating caliper (4)		*BA42.10-P-1001-14A
		Box wrench	Fig 4
6	Detach brake hose (2) from steering knuckle bracket (5)	When removing from a brake hose (2) on the front axle. Use new cable ties. Observe installation position.
		Pliers	Fig 6
7	Detach brake hose (2) from brake hose clip (6)
8	Install in the reverse order	First tighten union nuts and bolts on the brake hose by hand. Make sure assembly of brake line (1) and brake hose (2) is free of tension, then tighten union nuts and bolts.
9	Use water to rinse off any escaped brake fluid
10	Bleed brake system		AR42.10-P-0010RT
	Checking
	Risk of accident  caused by vehicle starting off by itself when engine is running. Risk of injury  caused by contusions and burns during starting procedure or when working near the engine as it is running	Secure vehicle to prevent it from moving by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
11	Check brake system for leaks		AR42.10-P-0100-01RT
	Risk of death  caused by limbs being caugh  or crushed  by rotating parts when performing tests on the brake test stand	Never leave the vehicle unattended on the rollers except in an emergency. Ensure that no one is under the vehicle or near rotating parts during testing. In case of emergency, use the EMERGENCY STOP switch to shut down test stand.	AS42.00-Z-0001-01A
12	Carry out brake test on the test stand		AP42.00-P-4290BA

Fig 3: Identifying Box Wrench Bit (000 589 75 03 00)

Courtesy of MERCEDES-BENZ USA

Fig 4: Identifying Ring Wrench (000 589 76 03 00)

Courtesy of MERCEDES-BENZ USA

Fig 5: Identifying Set Of Stop Plugs (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA

Fig 6: Identifying Pliers (164 589 01 37 00)

Courtesy of MERCEDES-BENZ USA