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 760i. 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). See 51 24 ... NOTES AND INSTRUCTIONS ON AUTOMATIC REAR LID ACTUATION (FROM 02/2003) (ELECTROHYDRAULIC-FULLY AUTOMATIC)
Remove right luggage compartment wheel arch trim See 51 47 161 REMOVING AND INSTALLING/REPLACING 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 . See 51 24 REAR LID LOCKS

Tightening torque 51 24 7AZ . See 51 24 REAR LID LOCKS

Fig 1: Identifying Hoses And Cable Holder

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"

Tightening torque 51 24 1AZ . See 51 24 REAR LID LOCKS

Fig 2: Identifying Banjo Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

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).

Hollow screw
Upper seal (thin)
Hose connection
Lower seal (thick)

Check fluid level in hydraulic unit See 51 24 ... NOTES AND INSTRUCTIONS ON AUTOMATIC REAR LID ACTUATION (FROM 02/2003) (ELECTROHYDRAULIC-FULLY AUTOMATIC)

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

Replacement only:

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

Fig 4: Identifying Hydraulic Unit

Courtesy of BMW OF NORTH AMERICA, INC.