Removing and Installing/Replacing Hydraulic Unit for Rear Lid Actuation (Electrohydraulic-Fully Automatic)
51 24 150 - Removing and installing/replacing hydraulic unit for rear lid actuation (electrohydraulic-fully automatic)
Necessary preliminary tasks:
- Read and comply with Notes on automatic rear lid actuation Notes on Automatic Rear Lid Actuation (Electrohydraulic-Fully Automatic) (electrohydraulic-fully automatic)
- Remove right luggage compartment wheel arch trim
Have a cleaning cloth ready to catch emerging fluid.
E67 only:
- Remove supplementary trim
Unscrew nuts (1).
Remove holder and pull out hydraulic unit (2).
Disconnect plug connections (3).
For removal of 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.
Detaching hoses on hydraulic unit:
Important!
Catch emerging fluid with a cleaning cloth.
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 on Automatic Rear Lid Actuation (Electrohydraulic-Fully Automatic)
Replacement only:
If necessary, replace faulty mounts (1) for hydraulic unit (2).