BMW X3 2005

Engine

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Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Remove or disconnect the following:
  6.  
  7. Remove the heater bulkhead by pulling off the sealing strips from the firewall, turning the toggle retainers about 90°, lifting out the cover, and removing the heater bulkhead.
    NOTE
    On automatic transmissions, remove transmission fluid line bolt on engine oil sump.



    Engine cover
     
    Both oxygen sensors
     
    Hood to full open (assembly) position
     
    Front splash guard
     
    Reinforcement plate from undercarriage
     
    Vacuum line from vacuum accumulator

    Click image to see an enlarged view

    Fig. Showing vacuum line and vacuum accumulator-3.0L engine

     



    Transmission
     
    A/C compressor from mounting (move aside, with lines connected)
     

  8.  
  9. Drain the cooling system (drain plug is located on exhaust side of cylinder number 2 in engine block). Reinstall drain plug with new seal ring.
  10.  
  11. Pull the locks and disconnect the coolant hoses from the water pump.
  12.  
  13. Remove or disconnect the following:

    Radiator
     
    Water hoses from pipe and from heating valve
     
    Tension strut
     
    Wiring harness section for engine (lay aside)
     

  14.  
  15. Siphon off some fluid from power steering reservoir. Unbolt reservoir and tie out of the way, leaving lines connected.
  16.  
  17. Remove or disconnect the following:

    Fan clutch with water pump impeller
     
    Alternator drive belt
     
    Vane pump for power steering (tie out of way, leaving lines connected)
     

  18.  
  19. Install an engine lift and chains, attaching to eye hooks.

    Click image to see an enlarged view

    Fig. Showing right ground wire and nut on right engine mount-3.0L engine

  20.  
  21. Disconnect the right ground wire.
  22.  
  23. Unbolt the left and right engine mounts.
  24.  
  25. Carefully lift out the engine assembly.
  26.  

To install:

  1. Install in reverse of removal procedure.
  2.  
  3. Tighten components to the following torque settings:
    1. Radiator bolts: 72-88 inch lbs. (9-10 Nm)
    2.  
    3. Power steering pump bracket bolts: 16 ft. lbs. (22 Nm)
    4.  

  4.  
  5. Tighten the automatic transmission-to-engine bolts to the following specifications:
    1. M8 hex bolts: 18 ft. lbs. (24 Nm).
    2.  
    3. M10 hex bolts: 33 ft. lbs. (45 Nm).
    4.  
    5. M12 hex bolts: 60 ft. lbs. (82 Nm).
    6.  
    7. M8 Torx bolts: 15 ft. lbs. (21 Nm).
    8.  
    9. M10 Torx bolts: 31 ft. lbs. (42 Nm).
    10.  
    11. M12 Torx bolts: 53 ft. lbs. (72 Nm).
    12.  

  6.  

 
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