Checking oil pressure of power steering pump - AR46.30-P-0100SXH
MODEL 216, 221 with electrohydraulic power steering (EHPS)
| 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 | |
| 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 | Open engine hood | ||
| 2 | Extract oil from power steering expansion reservoir | *210589007100 | |
| 3 | Remove the front and central sections of the lower engine compartment paneling | AR61.20-P-1105SX | |
| 4 | Detach holder for pressure and return line (2, 3) from rack-and-pinion steering (1) | AR46.25-P-3015SXH | |
| 5 | Detach pressure line and return line (2, 3) from rack-and-pinion steering (1) | AR46.25-P-3015SXH | |
| 6 | Mount test hose (02) with mounting plate (04) onto rack-and-pinion steering (1) | ||
| *230589019000 | |||
| 7 | Mount return line (3) onto rack-and-pinion steering (1) | *BA46.20-P-1003-01M | |
| 8 | Mount pressure line (2) onto test hose (03) | ||
| *212589009000 | |||
| 9 | Connect testing unit (01) to test hoses (02, 03) | *124589062100 | |
| 10 | Fill and bleed the power steering | 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 | |
| 11 | Start engine and allow it to run at engine speed of approx. 1000 rpm | ||
| Checking | |||
| 12 | Close throttle cock (01a) and check maximum operating pressure | *BE46.30-P-1001-01F | |
| 13 | Turn off engine | ||
| 14 | Extract oil from power steering expansion reservoir | ||
| 15 | Detach testing unit (01) | ||
| 16 | Detach pressure line (2) from test hose (03) | ||
| 17 | Detach return line (3) from rack-and-pinion steering (1) | ||
| 18 | Detach test hose (02) with mounting plate (04) from rack-and-pinion steering (1) | ||
| Install | |||
| 19 | Mount pressure and return line (2, 3) onto rack-and-pinion steering | ||
| *BA46.20-P-1003-01M | |||
| 20 | Fill and bleed the power steering | AR46.30-P-0010SX | |
| Checking | |||
| 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 | |
| 21 | Test run engine and check that steering system is not leaking and is functioning correctly |
POWER STEERING PUMP TEST SPECIFICATIONS
| Number | Designation | Model 216 | Model 221 | |
|---|---|---|---|---|
| BE46.30-P-1001-01F | Pressure in power steering pump | bar | 120...128 | 120...128 |
STEERING GEAR
| Number | Designation | Model 216 except 4MATIC | Model 216 with 4MATIC | |
|---|---|---|---|---|
| BA46.20-P-1003-01M | Bolt on clamp plate, high-pressure line / return line to rack-and-pinion steering | Nm | 20 | 20 |
STEERING GEAR
| Number | Designation | Model 221 except 4MATIC | Model 221 with 4MATIC | |
|---|---|---|---|---|
| BA46.20-P-1003-01M | Bolt on clamp plate, high-pressure line / return line to rack-and-pinion steering | Nm | 20 | 20 |