32 41 060 Removing and Installing or Replacing Hydraulic Steering Vane Pump

32 41 060 Removing and installing or replacing hydraulic steering vane pump (N51, N52, N53)







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.







IMPORTANT:
Aluminium magnesium materials.
No steel screws/bolts may be used due to the threat of electrochemical corrosion.
A magnesium crankcase requires aluminium screws/bolts exclusively.
Aluminium screws/bolts must be replaced each time they are released.
The end faces of aluminium screws/bolts are painted blue for the purposes of reliable identification.
Jointing torque and angle of rotation must be observed without fail (risk of damage).







Recycling:
Catch and dispose of hydraulic fluid in a suitable collecting vessel.
Observe country-specific waste disposal regulations







Necessary preliminary tasks:
- Draw off and dispose of hydraulic fluid from oil reservoir
- Remove intake silencer housing
- Replacement: Remove belt pulley
- Remove front underbody protection
- E8x only: Remove radiator seal







Release hose clamp (1) and detach intake pipe (2) from vane pump.

Installation note:
Markings on intake pipe and vane pump connection must match up.







Release bolt (1) and remove bracket with refrigerant line.
Unfasten screws (2).

Installation note:
Replace aluminium screws.
Observe screwing sequence.
Tightening torque 32 41 6AZ







Release banjo bolt (1) and disconnect pressure line.

Installation note:
Replace all sealing rings (D).
Make sure pressure line is laid without tension and with sufficient spacing to adjoining components.
Tightening torque 32 41 8AZ.

Release bolts (2) and remove vane pump towards bottom.

Installation note:
Replace aluminium screws.
Observe screwing sequence.







Screwing sequence:
1. Secure vane 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 and angle of rotation
Tightening torque 32 41 6AZ.
5. Release screws at side and check bolting points for gap freedom
6. Tighten down side screws to jointing torque and angle of rotation
Tightening torque 32 41 6AZ.







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

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