Remove/install power steering pump - AR46.30-P-0500SXH

MODEL 221, 216 with electrohydraulic power steering (EHPS) 

Fig 1: Identifying Electrohydraulic Power Steering, Screws, Bracket, Connector, Nut And Feed LineZ1

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.	AS00.00-Z-0013-01A
		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.
	Notes on bolted connections with self tapping screws		AH00.00-P-0007-01SF
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
1	Disconnect battery ground cable		AR54.10-P-0003SX
	Notes on battery		AH54.10-P-0001-01A
2	Open engine hood
3	Extract oil from power steering expansion reservoir		*210589007100
4	Detach right front wheel
	Remove/install wheels		AP40.10-P-4050SX
5	Remove the front and central sections of the lower engine compartment paneling		AR61.20-P-1105SX
6	Remove front section of right wheelhouse trim in front fender
7	Remove bolts (1, 2), unfasten bolt (3) and turn electrohydraulic power steering (A91/1) outwards		*BA46.30-P-1014-01F
8	Detach electrical connectors (7) and set aside
9	Detach pressure line D1 (6), to do so remove screw (5) and seal connections		*BA46.30-P-1016-01F
			*129589009100
10	Detach feed line Z1 (9) from electrohydraulic power steering (A91/1) and seal connections	See Remove/install hydraulic line for power steering.	AR46.25-P-3015SXH
			*129589009100
11	Detach electrohydraulic power steering (A91/1) from holder (4), to do so remove nuts (8)	Check fasteners and replace if necessary.
			*BA46.30-P-1015-01F
12	Install in the reverse order
13	Fill power steering pump and bleed		AR46.30-P-0010SX
14	Read out fault memory using Star Diagnosis, delete if necessary and check electrohydraulic power steering (A91/1) for current flashware
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A
15	Teach-in electrohydraulic power steering (A91/1) using Star Diagnosis	When replacing electrohydraulic power steering (A91/1)
	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
16	Test run engine and check that steering system is not leaking and is functioning correctly

Fig 2: Identifying Set Of Stop Plugs (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Hand Pump (210 589 00 71 00)

Courtesy of MERCEDES-BENZ USA