Remove/install brake hose at rear axle - AR42.10-P-0023MCU

MODEL 451.3/4 

Shown on left rear brake hose (1) 

Fig 1: Identifying Brake Hose At Rear Axle Remove/Install Components

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
	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
1	Raise vehicle with vehicle lift
2	Remove underfloor panels	Rechargeable drill/screwdriver
3.1	Remove bulkhead wall	On model 451.431	AR61.25-P-6600MCU
3.2	Remove maintenance panel from left bulkhead	On model 451.490
4	Unscrew plastic nut (2), open folding clamp (3) using a suitable tool and remove	Observe installation position of brake line (4) and electrical lines (5, 6)
5	Hang up electrical lines (5, 6) to one side
6	Check bolted connections of brake lines (4, 7) with brake hose (1) for color coding	: Mark the brake lines (4, 7) accordingly.	AR42.10-P-0013-05MCC
7	Loosen bolted connections of the brake lines (4, 7) with the brake hose (1) and separate	Mark brake hose (1) relative to the brake lines (4, 7). Collect brake fluid in a suitable container. Seal brake lines (4, 7) and brake hose (1) with suitable plugs.	*BA42.10-P-1002-04E
		Box wrench bit (for left rear upper line)	Fig 2
		Box wrench bit (for right rear lower line)	Fig 3
8	Detach retaining clamps (8) and remove brake hose (1)
9	Replace brake line (4) or brake line (7)	Only if brake line (4) or brake line (7) with red color coding has been detached. Remove/install brake line from the ESP hydraulic unit to the rear axle	AR42.10-P-0035MCU
		Remove/install left rear brake line	AR42.10-P-0036MCU
		Remove/install right rear brake line	AR42.10-P-0037MCU
10	Install in the reverse order
11	Bleed brake system		AR42.10-P-0010MCU

BRAKE LINES, BRAKE HOSES

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

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

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Box Wrench Bit (000 589 69 03 00)

Courtesy of MERCEDES-BENZ USA