51 24 150 Removing And Installing/Replacing Hydraulic Unit For Rear Lid Actuation (Electrohydraulic-Fully Automatic)

WARNING: This page is about a different car, the 2005 BMW 760Li, 2004 BMW 760i, 2004 BMW 760Li, and 2003 BMW 760Li. However, it is still accessible from the selected car via links, so may be relevant.

Necessary Preliminary Tasks:

Read and comply with Notes on automatic rear lid actuation (electrohydraulic-fully automatic). Refer to 51 24... NOTES ON AUTOMATIC REAR LID ACTUATION (ELECTROHYDRAULIC-FULLY AUTOMATIC) .
Remove right luggage compartment wheel arch trim. Refer to 51 47 161 REMOVING AND INSTALLING/REPLACING RIGHT LUGGAGE COMPARTMENT WHEEL ARCH TRIM .

Have a cleaning cloth ready to catch emerging fluid.

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, refer to 51 24 4AZ in BODY EQUIPMENT - TIGHTENING TORQUES .

Tightening torque, refer to 51 24 7AZ in BODY EQUIPMENT - TIGHTENING TORQUES .

Fig 1: Disconnecting Plug Connections

Courtesy of BMW OF NORTH AMERICA, INC.

Detaching Hoses On Hydraulic Unit:

IMPORTANT: Catch emerging fluid with a cleaning cloth.

Release banjo bolts (1) and (2).

Installation:

Banjo bolt on hydraulic unit "RED".
Banjo bolt on hydraulic unit "BLUE".
Adhesive tape on hose is "red".
Adhesive tape on hose is "blue".

Fig 2: Identifying Banjo Bolt
Courtesy of BMW OF NORTH AMERICA, INC.

Tightening torque, refer to 51 24 1AZ in BODY EQUIPMENT - TIGHTENING TORQUES .

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.

Installation:

Always fit new banjo bolts (1) and seals (2 and 4).

Check fluid level in hydraulic unit. Refer to 51 24... NOTES ON AUTOMATIC REAR LID ACTUATION (ELECTROHYDRAULIC-FULLY AUTOMATIC) .

Fig 3: Identifying Banjo Bolts And Seals
Courtesy of BMW OF NORTH AMERICA, INC.

Replacement Only:

If necessary, replace faulty mounts (1) for hydraulic unit (2).

Fig 4: View Of Mounts On Hydraulic Unit

Courtesy of BMW OF NORTH AMERICA, INC.