Remove/install hydraulic line of power steering

AR46.25-S-3015PU

Remove/install hydraulic line of power steering

24.10.2019

Model

470, 471

Modification notes

23.10.2019

Method extended

Operation steps 4, 5

23.10.2019

Work procedure changed.

Operation steps 7, 8

23.10.2019

Information added, special tools 140 589 00 03 00 Box wrench bit and 129 589 00 91 00 Set of stop plugs added.

Operation step 10

Shown on model 470 with engine 699

1

Hydraulic hose line

2

Panel

Shown on model 470 with engine 200

1

Hydraulic hose line

5

Screw

3

Hydraulic hose

6

Steering gear

4

Screw

 Warning

Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.

Wear protective gloves, protective clothing and safety glasses, if necessary.

AS00.00-Z-0002-01A

 Warning

Risk of injury to skin or eyes from hydraulic fluid spraying out under pressure.Risk of poisoning from swallowing hydraulic fluid.

Depressurize hydraulic system completely before starting any work on it. Wear protective clothing and safety glasses.

AS00.00-Z-0013-01A

 Caution

Risk of injury caused by scraping or cutting body parts on sharp vehicle parts

Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.

AS00.00-Z-0017-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

Topical note

Notes on working on hydraulic hoses

AH25.20-S-0003-02P

 

Remove/install

1

Remove cap from power steering expansion reservoir.

2

Extract hydraulic oil from power steering expansion reservoir.

 Hand pump

*210589007100

3

Remove resonator box.

Model 470 with engine 200

AR09.20-S-0010PB

4.1

Remove front lower engine compartment lining.

Model 470, 471
except code Y1J (Sump shield)

AR61.20-S-1105P

 Installation: Only install the front lower engine compartment lining after filling and bleeding the power steering.

4.2

Remove front underbody protection.

Model 470, 471
with code Y1J (Sump shield)

AR61.40-S-1001P

 Installation: Only install front underbody protection after filling and bleeding the power steering.

5

Remove right fender liner.

AR88.10-S-1301P

6

Remove hydraulic hose line (1) from hydraulic hose (3).

 Collect escaping hydraulic oil and seal connections.

 Commercially available devices/tools
Collecting pan

 Record plug

*129589009100

 Hose clamp pliers

*454589003700

7

Unscrew bolt (4).

 Bolt, holder for hydraulic hose/line to body

*BA46.20-N-1005-01Q

8

Remove sheet metal (2).

Model 470, 471 with engine 699

 Nut, panel to front axle carrier

*BA33.10-N-1002-01P

9

Remove screw (5).

 Bolt, holder for hydraulic hose/line to body

*BA46.20-N-1005-01Q

10

Remove hydraulic hose line (1) from steering gear (6).

Note on calculation of tightening torque when using insertion or socket tools with various effective lengths

AH00.00-P-0015-01CW

 To do so, remove union nut from steering gear (6). Collect escaping hydraulic oil using suitable rags and seal connections.

 Union nut, return line to steering gear

*BA46.20-N-1003-01Q

 Record plug

*129589009100

 Box wrench bit

*140589000300

11

Remove hydraulic hose line (1) downwards.

12

Install in the reverse order.

 Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

13

Fill hydraulic power steering and bleed.

AR46.25-S-3300-02P

 Power steering

*BF46.20-N-1001-01P

 Front axle carrier

Number

Designation

Model 470, 471

BA33.10-N-1002-01P

Nut, panel to front axle carrier

Nm

9

 Steering gear

Number

Designation

Model 470, 471

BA46.20-N-1003-01Q

Union nut, return line to steering gear

Nm

33

 Steering gear

Number

Designation

Model 470, 471

BA46.20-N-1005-01Q

Bolt, holder for hydraulic hose/line to body

Nm

4

 Filling capacities for steering gear

Number

Designation

Model 470, 471

BF46.20-N-1001-01P

Power steering

Filling capacity for MB power steering fluid

Liter

1

Sheet

BB00.40-P-0236-03A