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Home >> BMW >> 2001 >> 740iL >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Body Equipment - Repair Instructions >> Trunk Latch Locks >> 51 24 151 Removing and installing/replacing hydraulic cylinder for trunk lid (electrohydraulic/fully automatic)

51 24 151 Removing and installing/replacing hydraulic cylinder for trunk lid (electrohydraulic/fully automatic)

Read information on automatic trunk lid controls (electrohydraulic), refer to 51 24 ... INFORMATION ON AUTOMATIC TRUNK LID CONTROLS (ELECTROHYDRAULIC) .

If necessary, remove and install video module, refer to 65 50 510 REMOVING AND INSTALLING/REPLACING VIDEO MODULE FOR ON-BOARD MONITOR (SALOON) .

Detach lines from hydraulic control unit, refer to 51 24 150 REMOVING AND INSTALLING/REPLACING HYDRAULIC CONTROL UNIT FOR OPERATING TRUNK LID (ELECTROHYDRAULIC/FULLY AUTOMATIC) .

Unhook cable strap (1) for hydraulic hoses (2).

Fig 1: Unhooking Cable Strap (1) For Hydraulic Hoses (2)
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Installation: 

Lay hydraulic hoses (2) parallel and without kinks to wiring harness.

Release cable ties (1) and unhook cable straps (2). Detach hydraulic hoses (3).

Fig 2: Releasing Cable Ties And Unhook Cable Straps
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Installation: 

Lay hydraulic hoses (3) parallel and without kinks to wiring harness.

Turn seals (1) and remove hydraulic hoses (2).

Fig 3: Turning Seals (1) And Removing Hydraulic Hoses (2)
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Installation: 

Lay hydraulic hoses (2) parallel and without kinks to wiring harness.

Release expansion rivet (1) and lift insulating mat (2) to one side.

Fig 4: Releasing Expansion Rivet (1) And Lifting Insulating Mat (2)
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Unhook cable straps (1) and remove hydraulic hoses (2).

Fig 5: Unhooking Cable Straps (1) And Removing Hydraulic Hoses (2)
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Installation: 

Lay hydraulic hoses (2) parallel and without kinks to wiring harness.

Remove retainers (1) and (2).

Lever out rubber grommet (3).

Lever out hydraulic cylinder (4) and remove with hydraulic hoses.

Remove hydraulic cylinder with hoses (4).

Fig 6: Removing Hydraulic Cylinder With Hoses
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The hoses on the hydraulic cylinder must be sealed tight. To do so, use the plugs and cap nuts from the "Hollow union bolts for hydraulic cylinder" set.

Fig 7: Sealing Hoses On The Hydraulic Cylinder
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Installation: 

Check function.