Checking oil pressure of power steering pump - AR46.30-P-0100SXA

MODEL 221, 216 with ENGINE 275 without electrohydraulic power steering (EHPS) 

Fig 1: Identifying Testing Unit, Test Hose, Mounting Plate, Power Steering Return Line, Power Steering Pressure Line

Courtesy of MERCEDES-BENZ USA

	Removing
	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, thoroughly clean the area surrounding the separation point. Even the smallest dirt particles, introduced into the hydraulic components, can lead to malfunctions and a total failure of the hydraulic system
1	Extract oil from power steering expansion reservoir		*210589007100
2	Remove bottom engine compartment paneling	Vehicles without top protection	AR61.20-P-1105SX
		Vehicles with code Z07 Top protection	AR61.20-P-1105SXS
3	Detach return line (2) and pressure line (3) from rack-and-pinion steering; to do so, remove bolt (4)	Collect the discharged oil using a rag.
4	Attach test hose (02) and return line (2) to rack-and-pinion steering and fix clamping plate in place		*BA46.20-P-1003-01M
			*230589019000
5	Attach pressure line (3) to test hose (03) using mounting plate (04)
6	Connect testing unit (01) to test hoses (02, 03)		*124589062100
7	Fill power steering pump and bleed		AR46.30-P-0010SX
	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
8	Start engine and increase engine speed to approx. 1000 rpm
	Checking
9	Close throttle cock on testing unit (01) and check maximum operating pressure	Only carry out the test briefly so that the oil temperature does not rise unacceptably.	*BE46.30-P-1001-01F
10	Turn off engine
11	Extract oil from power steering expansion reservoir		*210589007100
12	Detach testing unit (01)
13	Detach pressure line (3) from test hose (03)	Collect the discharged oil using a rag.
14	Detach return line (2) and test hose (02) from rack-and-pinion steering	Collect the discharged oil using a rag.
	Install
15	Attach pressure line (3) and return line (2) to rack-and-pinion steering	Install new sealing rings.
			*BA46.20-P-1003-01M
16	Fill power steering pump and bleed		AR46.30-P-0010SX
17	Install lower engine compartment paneling	Vehicles without top protection	AR61.20-P-1105SX
		Vehicles with code Z07 Top protection	AR61.20-P-1105SXS

Fig 2: Identifying Tester (124 589 06 21 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Supplementary Set (230 589 01 90 00)

Courtesy of MERCEDES-BENZ USA

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

Courtesy of MERCEDES-BENZ USA