Remove/install power steering radiator - AR46.25-P-3020VT

MODEL 171.473 with ENGINE 113.989

Fig 1: Identifying Power Steering Radiator Components

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		AR88.40-P-1000V
2	Remove left intake air duct
3	Extract oil from expansion reservoir of power steering pump	Before opening the hydraulic system the area surrounding the separation point should be cleaned thoroughly. Even the smallest dirt particles, introduced into the hydraulic components, can lead to malfunctions and a total failure of the hydraulic system.
		Hand pump	Figure
4	Loosen hose clamp (1) and detach hydraulic line (30f) from power steering radiator (31).	Seal connections with stop plugs. Check condition of hose clamp (1) and hydraulic line (30f); replace if necessary.
			*BA46.30-P-1011-01D
		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
5	Raise vehicle with vehicle lift		AR00.60-P-1000V
6	Detach front bumper		AR88.20-P-2000V
7	Detach bracket (2)	Installation: Ensure power steering radiator (31) is installed in correct position.
			*BA46.25-P-1002-02B
8	Remove front part of engine compartment paneling	Installation: Only install engine compartment paneling after the leak test.	AR61.20-P-1105V
9	Remove fan shroud		AR20.40-P-6800VT
10	Loosen radiator grille
11	Detach radiator unit with condenser and place in engine interior compartment
12	Remove power steering radiator (31) forwards.
13	Install in the reverse order
14	Fill power steering pump and bleed		AR46.30-P-0010V
15	Check function of power steering and for leaks

POWER STEERING PUMP

Number	Designation		Model 171 with engine 113
BA46.30-P-1011-01D	Clamp, hydraulic line to radiator of power steering	Nm	2

POWER STEERING RADIATOR

Number	Designation		Models 171.454/456/473
BA46.25-P-1002-02B	Bolt, radiator bracket to reinforcement	Nm	5

Fig 2: Identifying Hand Pump (210 589 00 71 00)

Courtesy of MERCEDES-BENZ USA

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

Courtesy of MERCEDES-BENZ USA