Removing and Installing/Replacing Hydraulic Unit for Rear Lid Actuation (From 02/03) (Electrohydraulic-Fully Automatic)

51 24 150 - Removing and installing/replacing hydraulic unit for rear lid actuation (from 02/03) (electrohydraulic-fully automatic)





Necessary preliminary tasks:
- Have a cleaning cloth and an oil drip tray ready to catch emerging fluid.
- Follow notes and instructions Notes and Instructions on Automatic Rear Lid Actuation (From 02/03) (Electrohydraulic-Fully Automatic) for automatic rear lid actuation (electrohydraulic-fully automatic).
- Remove right luggage compartment wheel arch trim .
E67 only:
- Remove additional trim panel.





Unscrew nuts (1).
Remove holder and pull out hydraulic unit (2).
Disconnect plug connections (3).
When removing hydraulic cylinder only:
Unhook cable holders (5) and feed out hoses (4).
Tightening torque 51 24 4AZ [1][2]Specifications.
Tightening torque 51 24 7AZ [1][2]Specifications.





When removing hydraulic unit only:
Detaching hoses on hydraulic unit:

Important!
Catch escaping fluid with a cleaning cloth/oil drip tray.

Release banjo bolts (1 and 2).

Installation:
1 - Banjo bolt on hydraulic unit "RED"
2 - Banjo bolt on hydraulic unit "BLUE"
3 - Adhesive tape on hose is "red"
4 - Adhesive tape on hose is "blue"
Tightening torque 51 24 1AZ [1][2]Specifications.

Note:
If the hydraulic unit (5) is replaced or stays removed for an extended period of time, seal the bores in the hydraulic unit and the hose connections for the hydraulic cylinder.





Sealing connections on hydraulic unit and hose connections for hydraulic cylinders:
Hydraulic unit:
Use seal plugs from "Small parts for hydraulic unit"* set and removed seals.
Hose connections:
Use seal plugs with cap nuts from "Small parts for hydraulic unit"* set and removed seals.
* Sourcing reference: BMW Parts Service





Installation:
Always fit new banjo bolts (1) and seals (2 and 4).
1 - Hollow screw
2 - Upper seal (thin)
3 - Hose connection
4 - Lower seal (thick)
Check fluid level in hydraulic unit Notes and Instructions on Automatic Rear Lid Actuation (From 02/03) (Electrohydraulic-Fully Automatic)





Installation:
Insert guide (1) into counter support (2).
If necessary, replace counter support (2).