32 41 033 Removing and Installing Power Steering Pump For Power Steering Gear With Active Front Steering

32 41 033 Removing and installing/replacing power steering pump for hydraulic steering box with active steering (N55)





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.
Seal off hydraulic lines with seal plugs.

Important!
Aluminium screws/bolts must be replaced each time they are released.
Aluminium screws/bolts are permitted with and without colour coding (blue).
For reliable identification:





Aluminium screws/bolts are not magnetic.
Jointing torque and angle of rotation must be observed without fail (risk of damage)!





Necessary preliminary work:
^ Draw off and dispose of hydraulic fluid from oil reservoir
^ Remove front underbody protection
^ Remove cover of steering assembly at bottom left
^ Remove fan cowl with electric fan
^ Remove belt pulley





Release hose clamp (1) and detach intake pipe from power steering pump.

Installation note:
Replace hose clamp.

Make sure hydraulic lines are laid without tension and with sufficient distance to adjoining components.

Align intake pipe by way of marking (2) to power steering pump connection marking.





Release screw (1).

Tightening torque 32 41 6AZ.

Detach pressure line (2).

Installation note:
Replace sealing ring.





Note: Figure N52, Unfasten plug connection (1) and disconnect.

Unscrew screws (2) and (5).

Tightening torque 32 41 9AZ.

Installation note:
Replace aluminium screws.

Observe screwing sequence!





Release screws (1).

Tightening torque 32 41 9AZ.

Installation note:
Replace aluminium screws.

Observe screwing sequence!

Screwing sequence:
1. Secure power steering pump with screws





2. Tighten side screws to 2 Nm
3. Tighten front screws to 2 Nm
4. Tighten down front screws to jointing torque.
Tightening torque 32 41 9AZ.
5. Release screw at side and check bolting points for gap freedom
6. Tighten screws at side to jointing torque.
Tightening torque 32 41 9AZ.





After installation:
^ Fill and bleed hydraulic system
^ Check line connections for leak tightness

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