Remove/install hydraulic line of power steering - AR46.25-P-3015VTF

MODEL 171.473 with ENGINE 113.989 

Pressure line 

Fig 1: Identifying Hydraulic Line Of Power Steering Components (1 Of 2)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Hydraulic Line Of Power Steering Components (2 Of 2)

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Risk of injury  to skin or eyes caused by hydraulic fluid spraying out under high pressure. Risk of poisoning  caused by swallowing hydraulic fluid.	Depressurize the hydraulic system completely before starting any work on the system. Wear protective clothing and safety glasses.	-
	Risk of injury  caused by fingers being pinched or crushed  when removing, installing or aligning hoods, doors, trunk lids, tailgates or sliding roof.	Keep body parts and limbs well clear of moving parts.	-
1	Open engine hood and raise to vertical position		AR88.40-P-1000V
2	Remove left intake air duct (1).
3	Extract oil from power steering expansion reservoir (2).	The area around the separation point should be cleaned thoroughly before opening the power steering's hydraulic system. Even minute particles of dirt, introduced into the hydraulic components, can result in malfunctions or damage to the power steering.
		Hand pump	Figure
4	Detach return line (3) at power steering pump.		AR46.25-P-3015VTD
5	Unscrew union nut (5) of power steering pressure line (4) at power steering pump.	Use a rag to clear up any escaping oil and seal the line connections using stop plugs.
		Installation:  Install new O-ring.
			*BA46.30-P-1002-01F
		Set of stop plugs	Figure
	Risk of death  caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between the columns of the lifting platform and position the four support plates at the lifting platform support points specified by the vehicle manufacturer.	AS00.00-Z-0010-01A
6	Raise vehicle		AR00.60-P-1000V
7	Dismount lower engine compartment paneling	Installation:  Only install engine compartment paneling after the leak test.	AR61.20-P-1105V
8	Remove bolt (8) and detach power steering pressure line (4) from rack-and-pinion steering (6).	Collect oil which runs out with rags and seal line connections stop plugs.
		Installation:  Install new O-ring.
			*BA46.20-P-1001-01F
		Set of stop plugs	Figure
9	Remove power steering pressure line (4) downwards.
10	Install in the reverse order
	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	Fill power steering pump and bleed		AR46.30-P-0010V
12	Check oil level in power steering expansion reservoir (2), correct if necessary
	Power steering - checking and correcting oil level		AP46.00-P-4611V
13	Check function of power steering and for leaks

POWER STEERING PUMP

Number	Designation		Engine 113.989 in model 171
BA46.30-P-1002-01F	Union nut, pressure line of power steering to power steering pump	Nm	40

STEERING GEAR

Number	Designation		Model 171
BA46.20-P-1001-01F	Bolt, oil line retaining plate to rack and pinion steering	Nm	18

Fig 3: Identifying Set Of Stop Plugs (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA

Fig 4: Identifying Hand Pump (210 589 00 71 00)

Courtesy of MERCEDES-BENZ USA