32 13 060 Removing and installing hydraulic steering gear (N55/N63)

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WARNING: DANGER OF POISONING if oil is ingested/absorbed through the skin!
RISK OF INJURY if oil comes into contact with eyes and skin!

IMPORTANT: Adhere to the utmost cleanliness. Do not allow any dirt to enter the hydraulic system.
Close off line connections with seal plugs.

Necessary preliminary work:

Draw off and dispose of hydraulic fluid from oil reservoir
Remove front anti-roll bar . See 31 35 000 REMOVING AND INSTALLING/REPLACING FRONT ANTI-ROLL BAR or 37 11 010 REMOVING AND INSTALLING/REPLACING FRONT ACTIVE ANTI-ROLL BAR .
Lower FRONT AXLE SUPPORT
Remove TRACK ROD END ON BOTH SIDES FROM SWIVEL BEARING

Release screw (1).

Disconnect lines (2) and (3) from power steering gear.

Installation note:

Replace sealing rings.

Tightening torque 32 41 5AZ .

Fig 1: Identifying Power Steering Gear Lines And Screw

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If necessary, release block screw connection (1).

Release line holder (2) and remove line (3) to the steering gear.

Tightening torque 32 41 11AZ .

Fig 2: Identifying Line Holder And Block Screw Connection

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Release screw connection (1) if necessary (only on vehicles with Dynamic Drive)

Tightening torque 37 13 5AZ .

Release line holders (2) and (4).

Tightening torque 32 41 7AZ .

Remove bracket (3) from front axle carrier.

Tightening torque 32 41 12AZ .

Fig 3: Identifying Screw Connection, Line Holders And Front Axle Carrier Bracket

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Remove hydraulic line!

Detach plug (1) from EH converter.

IMPORTANT: Risk of damage!
When removing the steering gear, pay attention to female connector.

Fig 4: Identifying EH Converter Plug

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Fig 5: Identifying Steering Gear Mark Position

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IMPORTANT: To avoid the need for axle/wheel alignment, mark position of steering gear (2) to front axle support (1).
To do so, draw a wide white stripe on the front bolting points (left and right) and apply a thin black marking (3) to this stripe.

Release screws (1).

Carefully push line (2) up.

Remove hydraulic steering gear in downward direction.

Installation note:

Replace bolts.

Tightening torque 32 00 1AZ .

Fig 6: Identifying Push Line And Screws

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After installation:

Fill and bleed hydraulic system . See 32 13 006 BLEEDING POWER STEERING (VERSION WITH DYNAMIC DRIVE) or 32 13 006 BLEEDING POWER STEERING UNIT .
Check line connections for leak tightness
If necessary, carry out INITIAL OPERATION FOR DYNAMIC DRIVE