51 24 151 Removing And Installing/Replacing Hydraulic Cylinder For Rear Lid (ELECTROHYDRAULIC-Fully Automatic)

WARNING: This page is about a different car, the 2008 BMW Alpina and 2007 BMW Alpina. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Follow instructions for automatic rear lid actuation (electrohydraulic). See 51 24 ... NOTES ON AUTOMATIC REAR LID ACTUATION (ELECTROHYDRAULIC-FULLY AUTOMATIC) .
Disconnect hoses on hydraulic unit . See
If necessary, remove transmit-receive unit . See 51 24 150 REMOVING AND INSTALLING/REPLACING HYDRAULIC UNIT FOR REAR LID ACTUATION (FROM 02/2003) (ELECTROHYDRAULIC-FULLY AUTOMATIC) .

Open cable holders (2 and 4).

Release cable tie (3).

Feed out hydraulic hoses (1).

Fig 1: Identifying Cable Holders And Cable Tie

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Routing of hydraulic hoses (1):

behind cables (3)
correctly into cable holders (4)
right side with 2 cable ties (2)

Fig 2: Identifying Routing Of Hydraulic Hoses
Courtesy of BMW OF NORTH AMERICA, INC.

Open cable holders (1).

Feed out hydraulic hoses (2).

Fig 3: Identifying Cable Holders And Hydraulic Hoses

Courtesy of BMW OF NORTH AMERICA, INC.

Open cable holder (1) and feed out hydraulic hoses (2).

Lever hydraulic cylinder (4) out of ball pin (3).

Release retainer (5), remove and detach hydraulic cylinder (4) from rear lid hinge (6).

Fig 4: Removing Hydraulic Cylinder

Courtesy of BMW OF NORTH AMERICA, INC.

Hoses on hydraulic cylinder must be sealed tight. For this purpose, use the seal plugs and cap nuts from the "Small parts for hydraulic cylinder" set.

IMPORTANT: Hose connections (2) on hydraulic cylinder (1) must not be twisted.

Installation:

Check function.

Fig 5: Identifying Hose Connections On Hydraulic Cylinder

Courtesy of BMW OF NORTH AMERICA, INC.