Fill power steering pump and bleed

AR46.30-P-0010TY

Fill power steering pump and bleed

12.5.06

23.4.06

Document adapted to changed procedure

 

Remove/install

Danger!

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

 Danger!

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.

AS00.00-Z-0011-01A

1

Use hoist to raise vehicle until wheels no longer touch the ground.

AR00.60-P-1000TX

2

Remove left air intake duct (2) upstream of air filter

3

Remove front engine cover

Engine 156

 Do not tilt front engine cover, but lift upwards vertically otherwise the retaining lugs can break off.

4

Detach cap of expansion reservoir (1)

 Press the cap downwards and turn counterclockwise through 90°.

Charging

5

Fill expansion reservoir (1) with MB steering gear oil

Do not start the engine!

If the engine is started there is the danger that air gets into the hydraulic steering system which cannot be removed without taking further action.

Fill the expansion reservoir (1) of the power steering to approx. 10 mm below the upper edge of the reservoir with MB steering gear oil

 Add MB steering gear oil continuously, until the oil level remains constant.



*BF46.20-P-1001-01A

Bleeding

6

Turn steering wheel from steering stop to steering stop

Do not start the engine!

If the engine is started there is the danger that air gets into the hydraulic steering system which cannot be removed without taking further action.

Turn steering wheel slowly from steering stop to steering stop until no more bubbles are ascertained in the expansion reservoir (1)

 Repeat turning the steering from stop to stop several times (up to 30 times). During this process, MB steering gear oil must be poured into the expansion reservoir (1) by a second person.

 Danger!

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 running engine

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

AS00.00-Z-0005-01A

7

Start engine without moving the steering

 Allow the engine to run for approx. 1 minute at idle speed.

 During this process, a second person must observe the oil level in the expansion reservoir (1) and add MB steering gear oil if necessary.

8

Turn steering wheel from steering stop to steering stop

When the engine is running turn the steering wheel slowly several times from steering stop to steering stop, meanwhile add MB steering gear oil to the expansion reservoir (1)

 Repeat the procedure until the oil level in the expansion reservoir (1) remains constant and bubbles are no longer visible.



Checking

9

Check oil level in the expansion reservoir (1) and fill up to the maximum fill level

 The oil level in the expansion reservoir (1) must always be filled up to the maximum.



Power steering - checking and correcting oil level

AP46.00-P-4611TX

10

Check the steering system for leaks and proper operation when the engine is running

 In the event of leakage, find and eliminate cause.

11

Install in the reverse order

Number

Designation

Model
219

BF46.20-P-1001-01A

Power steering

Filling capacity

Liters

1.0

MB steering gear oil

Sheet

BB00.40-P-0345-00A